diff --git a/gymnasium/error.py b/gymnasium/error.py
index f3a4d59ed..32097c228 100644
--- a/gymnasium/error.py
+++ b/gymnasium/error.py
@@ -1,19 +1,12 @@
 """Set of Error classes for gymnasium."""
-import warnings
 
 
 class Error(Exception):
     """Error superclass."""
 
 
-# Local errors
-
-
-class Unregistered(Error):
-    """Raised when the user requests an item from the registry that does not actually exist."""
-
-
-class UnregisteredEnv(Unregistered):
+# Registration errors
+class UnregisteredEnv(Error):
     """Raised when the user requests an env from the registry that does not actually exist."""
 
 
@@ -29,10 +22,6 @@ class VersionNotFound(UnregisteredEnv):
     """Raised when the user requests an env from the registry where the version doesn't exist."""
 
 
-class UnregisteredBenchmark(Unregistered):
-    """Raised when the user requests an env from the registry that does not actually exist."""
-
-
 class DeprecatedEnv(Error):
     """Raised when the user requests an env from the registry with an older version number than the latest env with the same name."""
 
@@ -41,10 +30,7 @@ class RegistrationError(Error):
     """Raised when the user attempts to register an invalid env. For example, an unversioned env when a versioned env exists."""
 
 
-class UnseedableEnv(Error):
-    """Raised when the user tries to seed an env that does not support seeding."""
-
-
+# Environment errors
 class DependencyNotInstalled(Error):
     """Raised when the user has not installed a dependency."""
 
@@ -61,10 +47,6 @@ class ResetNeeded(Error):
     """When the order enforcing is violated, i.e. step or render is called before reset."""
 
 
-class ResetNotAllowed(Error):
-    """When the monitor is active, raised when the user tries to step an environment that's not yet terminated or truncated."""
-
-
 class InvalidAction(Error):
     """Raised when the user performs an action not contained within the action space."""
 
@@ -81,113 +63,12 @@ class InvalidBound(Error):
     """Raised when the clipping an array with invalid upper and/or lower bound."""
 
 
-# API errors
-
-
-class APIError(Error):
-    """Deprecated, to be removed at gymnasium 1.0."""
-
-    def __init__(
-        self,
-        message=None,
-        http_body=None,
-        http_status=None,
-        json_body=None,
-        headers=None,
-    ):
-        """Initialise API error."""
-        super().__init__(message)
-
-        warnings.warn("APIError is deprecated and will be removed at gymnasium 1.0")
-
-        if http_body and hasattr(http_body, "decode"):
-            try:
-                http_body = http_body.decode("utf-8")
-            except Exception:
-                http_body = "<Could not decode body as utf-8.>"
-
-        self._message = message
-        self.http_body = http_body
-        self.http_status = http_status
-        self.json_body = json_body
-        self.headers = headers or {}
-        self.request_id = self.headers.get("request-id", None)
-
-    def __unicode__(self):
-        """Returns a string, if request_id is not None then make message other use the _message."""
-        if self.request_id is not None:
-            msg = self._message or "<empty message>"
-            return f"Request {self.request_id}: {msg}"
-        else:
-            return self._message
-
-    def __str__(self):
-        """Returns the __unicode__."""
-        return self.__unicode__()
-
-
-class APIConnectionError(APIError):
-    """Deprecated, to be removed at gymnasium 1.0."""
-
-
-class InvalidRequestError(APIError):
-    """Deprecated, to be removed at gymnasium 1.0."""
-
-    def __init__(
-        self,
-        message,
-        param,
-        http_body=None,
-        http_status=None,
-        json_body=None,
-        headers=None,
-    ):
-        """Initialises the invalid request error."""
-        super().__init__(message, http_body, http_status, json_body, headers)
-        self.param = param
-
-
-class AuthenticationError(APIError):
-    """Deprecated, to be removed at gymnasium 1.0."""
-
-
-class RateLimitError(APIError):
-    """Deprecated, to be removed at gymnasium 1.0."""
-
-
-# Video errors
-
-
-class VideoRecorderError(Error):
-    """Unused error."""
-
-
-class InvalidFrame(Error):
-    """Error message when an invalid frame is captured."""
-
-
 # Wrapper errors
-
-
-class DoubleWrapperError(Error):
-    """Error message for when using double wrappers."""
-
-
-class WrapAfterConfigureError(Error):
-    """Error message for using wrap after configure."""
-
-
-class RetriesExceededError(Error):
-    """Error message for retries exceeding set number."""
-
-
 class DeprecatedWrapper(ImportError):
     """Error message for importing an old version of a wrapper."""
 
 
 # Vectorized environments errors
-
-
 class AlreadyPendingCallError(Exception):
     """Raised when `reset`, or `step` is called asynchronously (e.g. with `reset_async`, or `step_async` respectively), and `reset_async`, or `step_async` (respectively) is called again (without a complete call to `reset_wait`, or `step_wait` respectively)."""
 
diff --git a/gymnasium/wrappers/__init__.py b/gymnasium/wrappers/__init__.py
index d5563e010..2709d8be3 100644
--- a/gymnasium/wrappers/__init__.py
+++ b/gymnasium/wrappers/__init__.py
@@ -47,9 +47,7 @@
 """
 # pyright: reportUnsupportedDunderAll=false
 import importlib
-import re
 
-from gymnasium.error import DeprecatedWrapper
 from gymnasium.wrappers import vector
 from gymnasium.wrappers.atari_preprocessing import AtariPreprocessing
 from gymnasium.wrappers.common import (