diff --git a/.fernignore b/.fernignore
index 084a8eb..4723d18 100644
--- a/.fernignore
+++ b/.fernignore
@@ -1 +1,5 @@
 # Specify files that shouldn't be modified by Fern
+
+src/wrapper
+src/core/websocket
+src/serialization/resources/tts/types/OutputFormat.ts
\ No newline at end of file
diff --git a/jest.config.js b/jest.config.js
index 35d6e65..eaddc00 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -1,5 +1,15 @@
 /** @type {import('jest').Config} */
 module.exports = {
-    preset: "ts-jest",
-    testEnvironment: "node",
-};
+    preset: 'ts-jest/presets/default-esm',
+    testEnvironment: 'node',
+    extensionsToTreatAsEsm: ['.ts'],
+    globals: {
+      'ts-jest': {
+        useESM: true,
+      },
+    },
+    transformIgnorePatterns: [
+      '/node_modules/(?!(emittery)/)',
+    ],
+  };
+  
\ No newline at end of file
diff --git a/reference.md b/reference.md
index 1b1f3ae..a64a99d 100644
--- a/reference.md
+++ b/reference.md
@@ -58,17 +58,17 @@ await client.apiStatus.get();
 
 ```typescript
 await client.tts.bytes({
-    model_id: "sonic-english",
+    modelId: "sonic-english",
     transcript: "Hello, world!",
     voice: {
         mode: "id",
         id: "694f9389-aac1-45b6-b726-9d9369183238",
     },
     language: "en",
-    output_format: {
+    outputFormat: {
         container: "mp3",
-        sample_rate: 44100,
-        bit_rate: 128000,
+        sampleRate: 44100,
+        bitRate: 128000,
     },
 });
 ```
@@ -119,18 +119,18 @@ await client.tts.bytes({
 
 ```typescript
 const response = await client.tts.sse({
-    model_id: "string",
+    modelId: "string",
     transcript: "string",
     voice: {
         mode: "id",
         id: "string",
-        __experimental_controls: {
+        experimentalControls: {
             speed: 1.1,
             emotion: "anger:lowest",
         },
     },
     language: "en",
-    output_format: {
+    outputFormat: {
         container: "raw",
     },
     duration: 1.1,
@@ -205,10 +205,10 @@ This endpoint is priced at 15 characters per second of input audio.
 
 ```typescript
 await client.voiceChanger.bytes(fs.createReadStream("/path/to/your/file"), {
-    "voice[id]": "694f9389-aac1-45b6-b726-9d9369183238",
-    "output_format[container]": "mp3",
-    "output_format[sample_rate]": 44100,
-    "output_format[bit_rate]": 128000,
+    voiceId: "694f9389-aac1-45b6-b726-9d9369183238",
+    outputFormatContainer: "mp3",
+    outputFormatSampleRate: 44100,
+    outputFormatBitRate: 128000,
 });
 ```
 
@@ -266,10 +266,10 @@ await client.voiceChanger.bytes(fs.createReadStream("/path/to/your/file"), {
 
 ```typescript
 const response = await client.voiceChanger.sse(fs.createReadStream("/path/to/your/file"), {
-    "voice[id]": "694f9389-aac1-45b6-b726-9d9369183238",
-    "output_format[container]": "mp3",
-    "output_format[sample_rate]": 44100,
-    "output_format[bit_rate]": 128000,
+    voiceId: "694f9389-aac1-45b6-b726-9d9369183238",
+    outputFormatContainer: "mp3",
+    outputFormatSampleRate: 44100,
+    outputFormatBitRate: 128000,
 });
 for await (const item of response) {
     console.log(item);
@@ -383,7 +383,7 @@ await client.voices.create({
         1, 1, 1, 1, 1, 1, 1,
     ],
     language: "en",
-    base_voice_id: "string",
+    baseVoiceId: "string",
 });
 ```
 
@@ -597,7 +597,7 @@ await client.voices.localize({
         1, 1, 1, 1, 1, 1, 1,
     ],
     language: "en",
-    original_speaker_gender: "male",
+    originalSpeakerGender: "male",
     dialect: "au",
 });
 ```
diff --git a/src/api/resources/apiStatus/client/Client.ts b/src/api/resources/apiStatus/client/Client.ts
index 2147892..4089c6c 100644
--- a/src/api/resources/apiStatus/client/Client.ts
+++ b/src/api/resources/apiStatus/client/Client.ts
@@ -5,6 +5,7 @@
 import * as environments from "../../../../environments";
 import * as core from "../../../../core";
 import * as Cartesia from "../../../index";
+import * as serializers from "../../../../serialization/index";
 import * as errors from "../../../../errors/index";
 
 export declare namespace ApiStatus {
@@ -58,7 +59,13 @@ export class ApiStatus {
             abortSignal: requestOptions?.abortSignal,
         });
         if (_response.ok) {
-            return _response.body as Cartesia.ApiInfo;
+            return serializers.ApiInfo.parseOrThrow(_response.body, {
+                unrecognizedObjectKeys: "passthrough",
+                allowUnrecognizedUnionMembers: true,
+                allowUnrecognizedEnumValues: true,
+                skipValidation: true,
+                breadcrumbsPrefix: ["response"],
+            });
         }
 
         if (_response.error.reason === "status-code") {
diff --git a/src/api/resources/tts/client/Client.ts b/src/api/resources/tts/client/Client.ts
index 896e661..bd4b42d 100644
--- a/src/api/resources/tts/client/Client.ts
+++ b/src/api/resources/tts/client/Client.ts
@@ -6,9 +6,9 @@ import * as environments from "../../../../environments";
 import * as core from "../../../../core";
 import * as Cartesia from "../../../index";
 import * as stream from "stream";
+import * as serializers from "../../../../serialization/index";
 import urlJoin from "url-join";
 import * as errors from "../../../../errors/index";
-import * as serializers from "../../../../serialization/index";
 
 export declare namespace Tts {
     interface Options {
@@ -53,7 +53,7 @@ export class Tts {
             },
             contentType: "application/json",
             requestType: "json",
-            body: request,
+            body: serializers.TtsRequest.jsonOrThrow(request, { unrecognizedObjectKeys: "strip" }),
             responseType: "streaming",
             timeoutMs: requestOptions?.timeoutInSeconds != null ? requestOptions.timeoutInSeconds * 1000 : 60000,
             maxRetries: requestOptions?.maxRetries,
@@ -107,7 +107,7 @@ export class Tts {
             },
             contentType: "application/json",
             requestType: "json",
-            body: request,
+            body: serializers.TtsRequest.jsonOrThrow(request, { unrecognizedObjectKeys: "strip" }),
             responseType: "sse",
             timeoutMs: requestOptions?.timeoutInSeconds != null ? requestOptions.timeoutInSeconds * 1000 : 60000,
             maxRetries: requestOptions?.maxRetries,
diff --git a/src/api/resources/tts/types/CancelContextRequest.ts b/src/api/resources/tts/types/CancelContextRequest.ts
index 31c7bd4..f5622ad 100644
--- a/src/api/resources/tts/types/CancelContextRequest.ts
+++ b/src/api/resources/tts/types/CancelContextRequest.ts
@@ -6,7 +6,7 @@ import * as Cartesia from "../../../index";
 
 export interface CancelContextRequest {
     /** The ID of the context to cancel. */
-    context_id: Cartesia.ContextId;
+    contextId: Cartesia.ContextId;
     /** Whether to cancel the context, so that no more messages are generated for that context. */
     cancel: true;
 }
diff --git a/src/api/resources/tts/types/GenerationRequest.ts b/src/api/resources/tts/types/GenerationRequest.ts
index 8ac66ce..0dce467 100644
--- a/src/api/resources/tts/types/GenerationRequest.ts
+++ b/src/api/resources/tts/types/GenerationRequest.ts
@@ -6,22 +6,22 @@ import * as Cartesia from "../../../index";
 
 export interface GenerationRequest {
     /** The ID of the model to use for the generation. See [Models](/build-with-sonic/models) for available models. */
-    model_id: string;
+    modelId: string;
     transcript: string;
     voice: Cartesia.TtsRequestVoiceSpecifier;
     language?: Cartesia.SupportedLanguage;
-    output_format: Cartesia.WebSocketRawOutputFormat;
+    outputFormat: Cartesia.WebSocketRawOutputFormat;
     /**
      * The maximum duration of the audio in seconds. You do not usually need to specify this.
      * If the duration is not appropriate for the length of the transcript, the output audio may be truncated.
      */
     duration?: number;
-    context_id: Cartesia.ContextId;
+    contextId: Cartesia.ContextId;
     /**
      * Whether this input may be followed by more inputs.
      * If not specified, this defaults to `false`.
      */
     continue?: boolean;
     /** Whether to return word-level timestamps. */
-    add_timestamps?: boolean;
+    addTimestamps?: boolean;
 }
diff --git a/src/api/resources/tts/types/Mp3OutputFormat.ts b/src/api/resources/tts/types/Mp3OutputFormat.ts
index 7031390..4ca41a6 100644
--- a/src/api/resources/tts/types/Mp3OutputFormat.ts
+++ b/src/api/resources/tts/types/Mp3OutputFormat.ts
@@ -3,6 +3,6 @@
  */
 
 export interface Mp3OutputFormat {
-    sample_rate: number;
-    bit_rate: number;
+    sampleRate: number;
+    bitRate: number;
 }
diff --git a/src/api/resources/tts/types/RawOutputFormat.ts b/src/api/resources/tts/types/RawOutputFormat.ts
index 83118fa..0f32735 100644
--- a/src/api/resources/tts/types/RawOutputFormat.ts
+++ b/src/api/resources/tts/types/RawOutputFormat.ts
@@ -6,5 +6,5 @@ import * as Cartesia from "../../../index";
 
 export interface RawOutputFormat {
     encoding: Cartesia.RawEncoding;
-    sample_rate: number;
+    sampleRate: number;
 }
diff --git a/src/api/resources/tts/types/TtsRequest.ts b/src/api/resources/tts/types/TtsRequest.ts
index 7778620..154f6d1 100644
--- a/src/api/resources/tts/types/TtsRequest.ts
+++ b/src/api/resources/tts/types/TtsRequest.ts
@@ -6,11 +6,11 @@ import * as Cartesia from "../../../index";
 
 export interface TtsRequest {
     /** The ID of the model to use for the generation. See [Models](/build-with-sonic/models) for available models. */
-    model_id: string;
+    modelId: string;
     transcript: string;
     voice: Cartesia.TtsRequestVoiceSpecifier;
     language?: Cartesia.SupportedLanguage;
-    output_format: Cartesia.OutputFormat;
+    outputFormat: Cartesia.OutputFormat;
     /**
      * The maximum duration of the audio in seconds. You do not usually need to specify this.
      * If the duration is not appropriate for the length of the transcript, the output audio may be truncated.
diff --git a/src/api/resources/tts/types/TtsRequestEmbeddingSpecifier.ts b/src/api/resources/tts/types/TtsRequestEmbeddingSpecifier.ts
index 2bf19d5..b85fc8e 100644
--- a/src/api/resources/tts/types/TtsRequestEmbeddingSpecifier.ts
+++ b/src/api/resources/tts/types/TtsRequestEmbeddingSpecifier.ts
@@ -7,5 +7,5 @@ import * as Cartesia from "../../../index";
 export interface TtsRequestEmbeddingSpecifier {
     mode: "embedding";
     embedding: Cartesia.Embedding;
-    __experimental_controls?: Cartesia.Controls;
+    experimentalControls?: Cartesia.Controls;
 }
diff --git a/src/api/resources/tts/types/TtsRequestIdSpecifier.ts b/src/api/resources/tts/types/TtsRequestIdSpecifier.ts
index b53f481..ffdce30 100644
--- a/src/api/resources/tts/types/TtsRequestIdSpecifier.ts
+++ b/src/api/resources/tts/types/TtsRequestIdSpecifier.ts
@@ -7,5 +7,5 @@ import * as Cartesia from "../../../index";
 export interface TtsRequestIdSpecifier {
     mode: "id";
     id: Cartesia.VoiceId;
-    __experimental_controls?: Cartesia.Controls;
+    experimentalControls?: Cartesia.Controls;
 }
diff --git a/src/api/resources/tts/types/WebSocketBaseResponse.ts b/src/api/resources/tts/types/WebSocketBaseResponse.ts
index 6a6e4c6..62279a6 100644
--- a/src/api/resources/tts/types/WebSocketBaseResponse.ts
+++ b/src/api/resources/tts/types/WebSocketBaseResponse.ts
@@ -5,7 +5,7 @@
 import * as Cartesia from "../../../index";
 
 export interface WebSocketBaseResponse {
-    context_id?: Cartesia.ContextId;
-    status_code: number;
+    contextId?: Cartesia.ContextId;
+    statusCode: number;
     done: boolean;
 }
diff --git a/src/api/resources/tts/types/WebSocketChunkResponse.ts b/src/api/resources/tts/types/WebSocketChunkResponse.ts
index 0be3498..1e1c82e 100644
--- a/src/api/resources/tts/types/WebSocketChunkResponse.ts
+++ b/src/api/resources/tts/types/WebSocketChunkResponse.ts
@@ -6,5 +6,5 @@ import * as Cartesia from "../../../index";
 
 export interface WebSocketChunkResponse extends Cartesia.WebSocketBaseResponse {
     data: string;
-    step_time: number;
+    stepTime: number;
 }
diff --git a/src/api/resources/tts/types/WebSocketRawOutputFormat.ts b/src/api/resources/tts/types/WebSocketRawOutputFormat.ts
index 79bd10d..17a25a7 100644
--- a/src/api/resources/tts/types/WebSocketRawOutputFormat.ts
+++ b/src/api/resources/tts/types/WebSocketRawOutputFormat.ts
@@ -7,5 +7,5 @@ import * as Cartesia from "../../../index";
 export interface WebSocketRawOutputFormat {
     container: "raw";
     encoding: Cartesia.RawEncoding;
-    sample_rate: number;
+    sampleRate: number;
 }
diff --git a/src/api/resources/tts/types/WebSocketResponse.ts b/src/api/resources/tts/types/WebSocketResponse.ts
index a43b3de..861851b 100644
--- a/src/api/resources/tts/types/WebSocketResponse.ts
+++ b/src/api/resources/tts/types/WebSocketResponse.ts
@@ -7,7 +7,7 @@ import * as Cartesia from "../../../index";
 export type WebSocketResponse =
     | Cartesia.WebSocketResponse.Chunk
     | Cartesia.WebSocketResponse.Done
-    | Cartesia.WebSocketResponse.Timestamp
+    | Cartesia.WebSocketResponse.Timestamps
     | Cartesia.WebSocketResponse.Error_;
 
 export declare namespace WebSocketResponse {
@@ -19,8 +19,8 @@ export declare namespace WebSocketResponse {
         type: "done";
     }
 
-    interface Timestamp extends Cartesia.WebSocketTimestampResponse {
-        type: "timestamp";
+    interface Timestamps extends Cartesia.WebSocketTimestampsResponse {
+        type: "timestamps";
     }
 
     interface Error_ extends Cartesia.WebSocketErrorResponse {
diff --git a/src/api/resources/tts/types/WebSocketTimestampResponse.ts b/src/api/resources/tts/types/WebSocketTimestampResponse.ts
deleted file mode 100644
index b3b7cae..0000000
--- a/src/api/resources/tts/types/WebSocketTimestampResponse.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-/**
- * This file was auto-generated by Fern from our API Definition.
- */
-
-import * as Cartesia from "../../../index";
-
-export interface WebSocketTimestampResponse extends Cartesia.WebSocketBaseResponse {
-    word_timestamps?: Cartesia.WordTimestamps;
-}
diff --git a/src/api/resources/tts/types/WebSocketTtsOutput.ts b/src/api/resources/tts/types/WebSocketTtsOutput.ts
index 0b41146..73e2863 100644
--- a/src/api/resources/tts/types/WebSocketTtsOutput.ts
+++ b/src/api/resources/tts/types/WebSocketTtsOutput.ts
@@ -5,7 +5,7 @@
 import * as Cartesia from "../../../index";
 
 export interface WebSocketTtsOutput {
-    word_timestamps?: Cartesia.WordTimestamps;
+    wordTimestamps?: Cartesia.WordTimestamps;
     audio?: unknown;
-    context_id?: Cartesia.ContextId;
+    contextId?: Cartesia.ContextId;
 }
diff --git a/src/api/resources/tts/types/WebSocketTtsRequest.ts b/src/api/resources/tts/types/WebSocketTtsRequest.ts
index 04231f7..c0d3d8f 100644
--- a/src/api/resources/tts/types/WebSocketTtsRequest.ts
+++ b/src/api/resources/tts/types/WebSocketTtsRequest.ts
@@ -6,12 +6,12 @@ import * as Cartesia from "../../../index";
 
 export interface WebSocketTtsRequest {
     /** The ID of the model to use for the generation. See [Models](/build-with-sonic/models) for available models. */
-    model_id: string;
-    output_format: Cartesia.OutputFormat;
+    modelId: string;
+    outputFormat?: Cartesia.OutputFormat;
     transcript?: string;
     voice: Cartesia.TtsRequestVoiceSpecifier;
     duration?: number;
     language?: string;
-    add_timestamps: boolean;
-    context_id?: string;
+    addTimestamps?: boolean;
+    contextId?: string;
 }
diff --git a/src/api/resources/tts/types/index.ts b/src/api/resources/tts/types/index.ts
index 0c32ea2..5212040 100644
--- a/src/api/resources/tts/types/index.ts
+++ b/src/api/resources/tts/types/index.ts
@@ -3,8 +3,9 @@ export * from "./WebSocketBaseResponse";
 export * from "./WebSocketResponse";
 export * from "./WebSocketErrorResponse";
 export * from "./WebSocketChunkResponse";
-export * from "./WebSocketTimestampResponse";
+export * from "./WebSocketTimestampsResponse";
 export * from "./WebSocketTtsOutput";
+export * from "./WebSocketStreamOptions";
 export * from "./WordTimestamps";
 export * from "./WebSocketDoneResponse";
 export * from "./CancelContextRequest";
diff --git a/src/api/resources/voiceChanger/client/Client.ts b/src/api/resources/voiceChanger/client/Client.ts
index 4171289..e3ccb2d 100644
--- a/src/api/resources/voiceChanger/client/Client.ts
+++ b/src/api/resources/voiceChanger/client/Client.ts
@@ -48,15 +48,15 @@ export class VoiceChanger {
     ): Promise<stream.Readable> {
         const _request = await core.newFormData();
         await _request.appendFile("clip", clip);
-        await _request.append("voice[id]", request.voice[id]);
-        await _request.append("output_format[container]", request.output_format[container]);
-        await _request.append("output_format[sample_rate]", request.output_format[sample_rate].toString());
-        if (request.output_format[encoding] != null) {
-            await _request.append("output_format[encoding]", request.output_format[encoding]);
+        await _request.append("voice[id]", request.voiceId);
+        await _request.append("output_format[container]", request.outputFormatContainer);
+        await _request.append("output_format[sample_rate]", request.outputFormatSampleRate.toString());
+        if (request.outputFormatEncoding != null) {
+            await _request.append("output_format[encoding]", request.outputFormatEncoding);
         }
 
-        if (request.output_format[bit_rate] != null) {
-            await _request.append("output_format[bit_rate]", request.output_format[bit_rate].toString());
+        if (request.outputFormatBitRate != null) {
+            await _request.append("output_format[bit_rate]", request.outputFormatBitRate.toString());
         }
 
         const _maybeEncodedRequest = await _request.getRequest();
@@ -118,15 +118,15 @@ export class VoiceChanger {
     ): Promise<core.Stream<Cartesia.StreamingResponse>> {
         const _request = await core.newFormData();
         await _request.appendFile("clip", clip);
-        await _request.append("voice[id]", request.voice[id]);
-        await _request.append("output_format[container]", request.output_format[container]);
-        await _request.append("output_format[sample_rate]", request.output_format[sample_rate].toString());
-        if (request.output_format[encoding] != null) {
-            await _request.append("output_format[encoding]", request.output_format[encoding]);
+        await _request.append("voice[id]", request.voiceId);
+        await _request.append("output_format[container]", request.outputFormatContainer);
+        await _request.append("output_format[sample_rate]", request.outputFormatSampleRate.toString());
+        if (request.outputFormatEncoding != null) {
+            await _request.append("output_format[encoding]", request.outputFormatEncoding);
         }
 
-        if (request.output_format[bit_rate] != null) {
-            await _request.append("output_format[bit_rate]", request.output_format[bit_rate].toString());
+        if (request.outputFormatBitRate != null) {
+            await _request.append("output_format[bit_rate]", request.outputFormatBitRate.toString());
         }
 
         const _maybeEncodedRequest = await _request.getRequest();
diff --git a/src/api/resources/voiceChanger/client/requests/VoiceChangerBytesRequest.ts b/src/api/resources/voiceChanger/client/requests/VoiceChangerBytesRequest.ts
index ecda6ea..d86f3bd 100644
--- a/src/api/resources/voiceChanger/client/requests/VoiceChangerBytesRequest.ts
+++ b/src/api/resources/voiceChanger/client/requests/VoiceChangerBytesRequest.ts
@@ -7,40 +7,40 @@ import * as Cartesia from "../../../../index";
 /**
  * @example
  *     {
- *         "voice[id]": "694f9389-aac1-45b6-b726-9d9369183238",
- *         "output_format[container]": "mp3",
- *         "output_format[sample_rate]": 44100,
- *         "output_format[bit_rate]": 128000
+ *         voiceId: "694f9389-aac1-45b6-b726-9d9369183238",
+ *         outputFormatContainer: "mp3",
+ *         outputFormatSampleRate: 44100,
+ *         outputFormatBitRate: 128000
  *     }
  *
  * @example
  *     {
- *         "voice[id]": "694f9389-aac1-45b6-b726-9d9369183238",
- *         "output_format[container]": "wav",
- *         "output_format[sample_rate]": 44100,
- *         "output_format[encoding]": "pcm_f32le"
+ *         voiceId: "694f9389-aac1-45b6-b726-9d9369183238",
+ *         outputFormatContainer: "wav",
+ *         outputFormatSampleRate: 44100,
+ *         outputFormatEncoding: "pcm_f32le"
  *     }
  *
  * @example
  *     {
- *         "voice[id]": "694f9389-aac1-45b6-b726-9d9369183238",
- *         "output_format[container]": "raw",
- *         "output_format[sample_rate]": 44100,
- *         "output_format[encoding]": "pcm_f32le"
+ *         voiceId: "694f9389-aac1-45b6-b726-9d9369183238",
+ *         outputFormatContainer: "raw",
+ *         outputFormatSampleRate: 44100,
+ *         outputFormatEncoding: "pcm_f32le"
  *     }
  */
 export interface VoiceChangerBytesRequest {
-    "voice[id]": string;
-    "output_format[container]": Cartesia.OutputFormatContainer;
-    "output_format[sample_rate]": number;
+    voiceId: string;
+    outputFormatContainer: Cartesia.OutputFormatContainer;
+    outputFormatSampleRate: number;
     /**
      * Required for `raw` and `wav` containers.
      *
      */
-    "output_format[encoding]"?: Cartesia.RawEncoding;
+    outputFormatEncoding?: Cartesia.RawEncoding;
     /**
      * Required for `mp3` containers.
      *
      */
-    "output_format[bit_rate]"?: number;
+    outputFormatBitRate?: number;
 }
diff --git a/src/api/resources/voiceChanger/client/requests/VoiceChangerSseRequest.ts b/src/api/resources/voiceChanger/client/requests/VoiceChangerSseRequest.ts
index 6fa915c..b912610 100644
--- a/src/api/resources/voiceChanger/client/requests/VoiceChangerSseRequest.ts
+++ b/src/api/resources/voiceChanger/client/requests/VoiceChangerSseRequest.ts
@@ -7,40 +7,40 @@ import * as Cartesia from "../../../../index";
 /**
  * @example
  *     {
- *         "voice[id]": "694f9389-aac1-45b6-b726-9d9369183238",
- *         "output_format[container]": "mp3",
- *         "output_format[sample_rate]": 44100,
- *         "output_format[bit_rate]": 128000
+ *         voiceId: "694f9389-aac1-45b6-b726-9d9369183238",
+ *         outputFormatContainer: "mp3",
+ *         outputFormatSampleRate: 44100,
+ *         outputFormatBitRate: 128000
  *     }
  *
  * @example
  *     {
- *         "voice[id]": "694f9389-aac1-45b6-b726-9d9369183238",
- *         "output_format[container]": "wav",
- *         "output_format[sample_rate]": 44100,
- *         "output_format[encoding]": "pcm_f32le"
+ *         voiceId: "694f9389-aac1-45b6-b726-9d9369183238",
+ *         outputFormatContainer: "wav",
+ *         outputFormatSampleRate: 44100,
+ *         outputFormatEncoding: "pcm_f32le"
  *     }
  *
  * @example
  *     {
- *         "voice[id]": "694f9389-aac1-45b6-b726-9d9369183238",
- *         "output_format[container]": "raw",
- *         "output_format[sample_rate]": 44100,
- *         "output_format[encoding]": "pcm_f32le"
+ *         voiceId: "694f9389-aac1-45b6-b726-9d9369183238",
+ *         outputFormatContainer: "raw",
+ *         outputFormatSampleRate: 44100,
+ *         outputFormatEncoding: "pcm_f32le"
  *     }
  */
 export interface VoiceChangerSseRequest {
-    "voice[id]": string;
-    "output_format[container]": Cartesia.OutputFormatContainer;
-    "output_format[sample_rate]": number;
+    voiceId: string;
+    outputFormatContainer: Cartesia.OutputFormatContainer;
+    outputFormatSampleRate: number;
     /**
      * Required for `raw` and `wav` containers.
      *
      */
-    "output_format[encoding]"?: Cartesia.RawEncoding;
+    outputFormatEncoding?: Cartesia.RawEncoding;
     /**
      * Required for `mp3` containers.
      *
      */
-    "output_format[bit_rate]"?: number;
+    outputFormatBitRate?: number;
 }
diff --git a/src/api/resources/voices/client/Client.ts b/src/api/resources/voices/client/Client.ts
index fce721b..9b0e4b1 100644
--- a/src/api/resources/voices/client/Client.ts
+++ b/src/api/resources/voices/client/Client.ts
@@ -6,6 +6,7 @@ import * as environments from "../../../../environments";
 import * as core from "../../../../core";
 import * as Cartesia from "../../../index";
 import urlJoin from "url-join";
+import * as serializers from "../../../../serialization/index";
 import * as errors from "../../../../errors/index";
 import * as fs from "fs";
 import { Blob } from "buffer";
@@ -64,7 +65,13 @@ export class Voices {
             abortSignal: requestOptions?.abortSignal,
         });
         if (_response.ok) {
-            return _response.body as Cartesia.Voice[];
+            return serializers.voices.list.Response.parseOrThrow(_response.body, {
+                unrecognizedObjectKeys: "passthrough",
+                allowUnrecognizedUnionMembers: true,
+                allowUnrecognizedEnumValues: true,
+                skipValidation: true,
+                breadcrumbsPrefix: ["response"],
+            });
         }
 
         if (_response.error.reason === "status-code") {
@@ -99,7 +106,7 @@ export class Voices {
      *         description: "string",
      *         embedding: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
      *         language: "en",
-     *         base_voice_id: "string"
+     *         baseVoiceId: "string"
      *     })
      */
     public async create(
@@ -124,13 +131,19 @@ export class Voices {
             },
             contentType: "application/json",
             requestType: "json",
-            body: request,
+            body: serializers.CreateVoiceRequest.jsonOrThrow(request, { unrecognizedObjectKeys: "strip" }),
             timeoutMs: requestOptions?.timeoutInSeconds != null ? requestOptions.timeoutInSeconds * 1000 : 60000,
             maxRetries: requestOptions?.maxRetries,
             abortSignal: requestOptions?.abortSignal,
         });
         if (_response.ok) {
-            return _response.body as Cartesia.Voice;
+            return serializers.Voice.parseOrThrow(_response.body, {
+                unrecognizedObjectKeys: "passthrough",
+                allowUnrecognizedUnionMembers: true,
+                allowUnrecognizedEnumValues: true,
+                skipValidation: true,
+                breadcrumbsPrefix: ["response"],
+            });
         }
 
         if (_response.error.reason === "status-code") {
@@ -166,7 +179,7 @@ export class Voices {
         const _response = await (this._options.fetcher ?? core.fetcher)({
             url: urlJoin(
                 (await core.Supplier.get(this._options.environment)) ?? environments.CartesiaEnvironment.Production,
-                `/voices/${encodeURIComponent(id)}`
+                `/voices/${encodeURIComponent(serializers.VoiceId.jsonOrThrow(id))}`
             ),
             method: "DELETE",
             headers: {
@@ -230,7 +243,7 @@ export class Voices {
         const _response = await (this._options.fetcher ?? core.fetcher)({
             url: urlJoin(
                 (await core.Supplier.get(this._options.environment)) ?? environments.CartesiaEnvironment.Production,
-                `/voices/${encodeURIComponent(id)}`
+                `/voices/${encodeURIComponent(serializers.VoiceId.jsonOrThrow(id))}`
             ),
             method: "PATCH",
             headers: {
@@ -245,13 +258,19 @@ export class Voices {
             },
             contentType: "application/json",
             requestType: "json",
-            body: request,
+            body: serializers.UpdateVoiceRequest.jsonOrThrow(request, { unrecognizedObjectKeys: "strip" }),
             timeoutMs: requestOptions?.timeoutInSeconds != null ? requestOptions.timeoutInSeconds * 1000 : 60000,
             maxRetries: requestOptions?.maxRetries,
             abortSignal: requestOptions?.abortSignal,
         });
         if (_response.ok) {
-            return _response.body as Cartesia.Voice;
+            return serializers.Voice.parseOrThrow(_response.body, {
+                unrecognizedObjectKeys: "passthrough",
+                allowUnrecognizedUnionMembers: true,
+                allowUnrecognizedEnumValues: true,
+                skipValidation: true,
+                breadcrumbsPrefix: ["response"],
+            });
         }
 
         if (_response.error.reason === "status-code") {
@@ -287,7 +306,7 @@ export class Voices {
         const _response = await (this._options.fetcher ?? core.fetcher)({
             url: urlJoin(
                 (await core.Supplier.get(this._options.environment)) ?? environments.CartesiaEnvironment.Production,
-                `/voices/${encodeURIComponent(id)}`
+                `/voices/${encodeURIComponent(serializers.VoiceId.jsonOrThrow(id))}`
             ),
             method: "GET",
             headers: {
@@ -307,7 +326,13 @@ export class Voices {
             abortSignal: requestOptions?.abortSignal,
         });
         if (_response.ok) {
-            return _response.body as Cartesia.Voice;
+            return serializers.Voice.parseOrThrow(_response.body, {
+                unrecognizedObjectKeys: "passthrough",
+                allowUnrecognizedUnionMembers: true,
+                allowUnrecognizedEnumValues: true,
+                skipValidation: true,
+                breadcrumbsPrefix: ["response"],
+            });
         }
 
         if (_response.error.reason === "status-code") {
@@ -340,7 +365,7 @@ export class Voices {
      *     await client.voices.localize({
      *         embedding: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
      *         language: "en",
-     *         original_speaker_gender: "male",
+     *         originalSpeakerGender: "male",
      *         dialect: "au"
      *     })
      */
@@ -366,13 +391,19 @@ export class Voices {
             },
             contentType: "application/json",
             requestType: "json",
-            body: request,
+            body: serializers.LocalizeVoiceRequest.jsonOrThrow(request, { unrecognizedObjectKeys: "strip" }),
             timeoutMs: requestOptions?.timeoutInSeconds != null ? requestOptions.timeoutInSeconds * 1000 : 60000,
             maxRetries: requestOptions?.maxRetries,
             abortSignal: requestOptions?.abortSignal,
         });
         if (_response.ok) {
-            return _response.body as Cartesia.EmbeddingResponse;
+            return serializers.EmbeddingResponse.parseOrThrow(_response.body, {
+                unrecognizedObjectKeys: "passthrough",
+                allowUnrecognizedUnionMembers: true,
+                allowUnrecognizedEnumValues: true,
+                skipValidation: true,
+                breadcrumbsPrefix: ["response"],
+            });
         }
 
         if (_response.error.reason === "status-code") {
@@ -431,13 +462,19 @@ export class Voices {
             },
             contentType: "application/json",
             requestType: "json",
-            body: request,
+            body: serializers.MixVoicesRequest.jsonOrThrow(request, { unrecognizedObjectKeys: "strip" }),
             timeoutMs: requestOptions?.timeoutInSeconds != null ? requestOptions.timeoutInSeconds * 1000 : 60000,
             maxRetries: requestOptions?.maxRetries,
             abortSignal: requestOptions?.abortSignal,
         });
         if (_response.ok) {
-            return _response.body as Cartesia.EmbeddingResponse;
+            return serializers.EmbeddingResponse.parseOrThrow(_response.body, {
+                unrecognizedObjectKeys: "passthrough",
+                allowUnrecognizedUnionMembers: true,
+                allowUnrecognizedEnumValues: true,
+                skipValidation: true,
+                breadcrumbsPrefix: ["response"],
+            });
         }
 
         if (_response.error.reason === "status-code") {
@@ -508,7 +545,13 @@ export class Voices {
             abortSignal: requestOptions?.abortSignal,
         });
         if (_response.ok) {
-            return _response.body as Cartesia.EmbeddingResponse;
+            return serializers.EmbeddingResponse.parseOrThrow(_response.body, {
+                unrecognizedObjectKeys: "passthrough",
+                allowUnrecognizedUnionMembers: true,
+                allowUnrecognizedEnumValues: true,
+                skipValidation: true,
+                breadcrumbsPrefix: ["response"],
+            });
         }
 
         if (_response.error.reason === "status-code") {
diff --git a/src/api/resources/voices/types/CreateVoiceRequest.ts b/src/api/resources/voices/types/CreateVoiceRequest.ts
index e51f9b6..71824f9 100644
--- a/src/api/resources/voices/types/CreateVoiceRequest.ts
+++ b/src/api/resources/voices/types/CreateVoiceRequest.ts
@@ -10,6 +10,6 @@ export interface CreateVoiceRequest {
     /** The description of the voice. */
     description: string;
     embedding: Cartesia.Embedding;
-    language: Cartesia.SupportedLanguage;
-    base_voice_id?: Cartesia.BaseVoiceId;
+    language?: Cartesia.SupportedLanguage;
+    baseVoiceId?: Cartesia.BaseVoiceId;
 }
diff --git a/src/api/resources/voices/types/LocalizeVoiceRequest.ts b/src/api/resources/voices/types/LocalizeVoiceRequest.ts
index 529aed3..768e437 100644
--- a/src/api/resources/voices/types/LocalizeVoiceRequest.ts
+++ b/src/api/resources/voices/types/LocalizeVoiceRequest.ts
@@ -7,6 +7,6 @@ import * as Cartesia from "../../../index";
 export interface LocalizeVoiceRequest {
     embedding: Cartesia.Embedding;
     language: Cartesia.LocalizeTargetLanguage;
-    original_speaker_gender: Cartesia.Gender;
-    dialect: Cartesia.LocalizeDialect;
+    originalSpeakerGender: Cartesia.Gender;
+    dialect?: Cartesia.LocalizeDialect;
 }
diff --git a/src/api/resources/voices/types/Voice.ts b/src/api/resources/voices/types/Voice.ts
index b582a53..523cde1 100644
--- a/src/api/resources/voices/types/Voice.ts
+++ b/src/api/resources/voices/types/Voice.ts
@@ -7,16 +7,16 @@ import * as Cartesia from "../../../index";
 export interface Voice {
     id: Cartesia.VoiceId;
     /** The ID of the user who owns the voice. */
-    user_id?: string;
+    userId?: string;
     /** Whether the voice is publicly accessible. */
-    is_public: boolean;
+    isPublic: boolean;
     /** The name of the voice. */
     name: string;
     /** The description of the voice. */
     description: string;
     /** The date and time the voice was created. */
-    created_at: string;
+    createdAt: Date;
     embedding: Cartesia.Embedding;
     language: Cartesia.SupportedLanguage;
-    base_voice_id?: Cartesia.BaseVoiceId;
+    baseVoiceId?: Cartesia.BaseVoiceId;
 }
diff --git a/src/core/index.ts b/src/core/index.ts
index 722f2e3..b6b4fe1 100644
--- a/src/core/index.ts
+++ b/src/core/index.ts
@@ -2,3 +2,4 @@ export * from "./fetcher";
 export * from "./runtime";
 export * from "./streaming-fetcher";
 export * from "./form-data-utils";
+export * as serialization from "./schemas";
diff --git a/yarn.lock b/yarn.lock
index c5586bb..d27bab1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -663,11 +663,11 @@
     form-data "^4.0.0"
 
 "@types/node@*":
-  version "22.9.1"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-22.9.1.tgz#bdf91c36e0e7ecfb7257b2d75bf1b206b308ca71"
-  integrity sha512-p8Yy/8sw1caA8CdRIQBG5tiLHmxtQKObCijiAa9Ez+d4+PRffM4054xbju0msf+cvhJpnFEeNjxmVT/0ipktrg==
+  version "22.10.0"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-22.10.0.tgz#89bfc9e82496b9c7edea3382583fa94f75896e81"
+  integrity sha512-XC70cRZVElFHfIUB40FgZOBbgJYFKKMa5nb9lxcwYstFG/Mi+/Y0bGS+rs6Dmhmkpq4pnNiLiuZAbc02YCOnmA==
   dependencies:
-    undici-types "~6.19.8"
+    undici-types "~6.20.0"
 
 "@types/node@17.0.33":
   version "17.0.33"
@@ -1102,9 +1102,9 @@ camelcase@^6.2.0:
   integrity sha512-Gmy6FhYlCY7uOElZUSbxo2UCDH8owEk996gkbrpsgGtrJLM3J7jGxl9Ic7Qwwj4ivOE5AWZWRMecDdF7hqGjFA==
 
 caniuse-lite@^1.0.30001669:
-  version "1.0.30001680"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001680.tgz#5380ede637a33b9f9f1fc6045ea99bd142f3da5e"
-  integrity sha512-rPQy70G6AGUMnbwS1z6Xg+RkHYPAi18ihs47GH0jcxIG7wArmPgY3XbS2sRdBbxJljp3thdT8BIqv9ccCypiPA==
+  version "1.0.30001684"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001684.tgz#0eca437bab7d5f03452ff0ef9de8299be6b08e16"
+  integrity sha512-G1LRwLIQjBQoyq0ZJGqGIJUXzJ8irpbjHLpVRXDvBEScFJ9b17sgK6vlx0GAJFE21okD7zXl08rRRUfq6HdoEQ==
 
 chalk@^4.0.0, chalk@^4.1.0:
   version "4.1.2"
@@ -1294,9 +1294,9 @@ domexception@^4.0.0:
     webidl-conversions "^7.0.0"
 
 electron-to-chromium@^1.5.41:
-  version "1.5.63"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.5.63.tgz#69444d592fbbe628d129866c2355691ea93eda3e"
-  integrity sha512-ddeXKuY9BHo/mw145axlyWjlJ1UBt4WK3AlvkT7W2AbqfRQoacVoRUCF6wL3uIx/8wT9oLKXzI+rFqHHscByaA==
+  version "1.5.65"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.5.65.tgz#e2b9d84d31e187a847e3ccdcfb415ddd4a3d1ea7"
+  integrity sha512-PWVzBjghx7/wop6n22vS2MLU8tKGd4Q91aCEGhG/TYmW6PP5OcSXcdnxTe1NNt0T66N8D6jxh4kC8UsdzOGaIw==
 
 emittery@^0.13.1:
   version "0.13.1"
@@ -2544,9 +2544,9 @@ prompts@^2.0.1:
     sisteransi "^1.0.5"
 
 psl@^1.1.33:
-  version "1.10.0"
-  resolved "https://registry.yarnpkg.com/psl/-/psl-1.10.0.tgz#1450f7e16f922c3beeb7bd9db3f312635018fa15"
-  integrity sha512-KSKHEbjAnpUuAUserOq0FxGXCUrzC3WniuSJhvdbs102rL55266ZcHBqLWOsG30spQMlPdpy7icATiAQehg/iA==
+  version "1.13.0"
+  resolved "https://registry.yarnpkg.com/psl/-/psl-1.13.0.tgz#8b2357f13ef3cf546af3f52de00543a94da86cfa"
+  integrity sha512-BFwmFXiJoFqlUpZ5Qssolv15DMyc84gTBds1BjsV1BfXEo1UyyD7GsmN67n7J77uRhoSNW1AXtXKPLcBFQn9Aw==
   dependencies:
     punycode "^2.3.1"
 
@@ -2962,10 +2962,10 @@ typescript@4.6.4:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.6.4.tgz#caa78bbc3a59e6a5c510d35703f6a09877ce45e9"
   integrity sha512-9ia/jWHIEbo49HfjrLGfKbZSuWo9iTMwXO+Ca3pRsSpbsMbc7/IU8NKdCZVRRBafVPGnoJeFL76ZOAA84I9fEg==
 
-undici-types@~6.19.8:
-  version "6.19.8"
-  resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-6.19.8.tgz#35111c9d1437ab83a7cdc0abae2f26d88eda0a02"
-  integrity sha512-ve2KP6f/JnbPBFyobGHuerC9g1FYGn/F8n1LWTwNxCEzd6IfqTwUQcNXgEtmmQ6DlRrC1hrSrBnCZPokRrDHjw==
+undici-types@~6.20.0:
+  version "6.20.0"
+  resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-6.20.0.tgz#8171bf22c1f588d1554d55bf204bc624af388433"
+  integrity sha512-Ny6QZ2Nju20vw1SRHe3d9jVu6gJ+4e3+MMpqu7pqE5HT6WsTSlce++GQmK5UXS8mzV8DSYHrQH+Xrf2jVcuKNg==
 
 universalify@^0.2.0:
   version "0.2.0"