diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 43bdc7a671b484..cc1fa7cb42d67e 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -41,8 +41,8 @@ env:
   UV_CACHE_VERSION: 1
   MYPY_CACHE_VERSION: 9
   HA_SHORT_VERSION: "2025.1"
-  DEFAULT_PYTHON: "3.12"
-  ALL_PYTHON_VERSIONS: "['3.12', '3.13']"
+  DEFAULT_PYTHON: "3.13"
+  ALL_PYTHON_VERSIONS: "['3.13']"
   # 10.3 is the oldest supported version
   # - 10.3.32 is the version currently shipped with Synology (as of 17 Feb 2022)
   # 10.6 is the current long-term-support
@@ -773,6 +773,10 @@ jobs:
     needs:
       - info
       - base
+    env:
+      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      REMOTE: cdce8p
+      BRANCH: dev
     steps:
       - name: Check out code from GitHub
         uses: actions/checkout@v4.2.2
@@ -782,10 +786,32 @@ jobs:
         with:
           python-version: ${{ env.DEFAULT_PYTHON }}
           check-latest: true
+
+      - name: Fetch mypy version string (${{ env.BRANCH }})
+        id: fetch-version
+        run: |
+          echo "Checking mypy branch: ${{ env.BRANCH }}"
+          base=$(curl -sS \
+            https://raw.githubusercontent.com/${{ env.REMOTE }}/mypy/${{ env.BRANCH }}/mypy/version.py | \
+            grep -e ^__version__ | \
+            cut -d '=' -f2 | tr -d ' "')
+          sha=$(gh api \
+            -H "Accept: application/vnd.github+json" \
+            /repos/${{ env.REMOTE }}/mypy/git/ref/heads/${{ env.BRANCH }} | \
+            jq -r '.object.sha')
+          if [[ $base == *"+dev" ]]; then
+            version="v$base.$sha"
+          else
+            version="v$base"
+          fi
+          echo "version=$version" >> $GITHUB_OUTPUT
+          echo "name=(${{ env.BRANCH }} -- $version)" >> $GITHUB_OUTPUT
+          echo "Found: $version"
+
       - name: Generate partial mypy restore key
         id: generate-mypy-key
         run: |
-          mypy_version=$(cat requirements_test.txt | grep mypy | cut -d '=' -f 3)
+          mypy_version=${{ steps.fetch-version.outputs.version }}
           echo "version=$mypy_version" >> $GITHUB_OUTPUT
           echo "key=mypy-${{ env.MYPY_CACHE_VERSION }}-$mypy_version-${{
             env.HA_SHORT_VERSION }}-$(date -u '+%Y-%m-%dT%H:%M:%s')" >> $GITHUB_OUTPUT
@@ -798,8 +824,108 @@ jobs:
           key: >-
             ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
             needs.info.outputs.python_cache_key }}
+
+      - name: Remove old mypy version
+        run: |
+          . venv/bin/activate
+          pip uninstall -y mypy
+      - name: Restore custom mypy version in venv ${{ steps.fetch-version.outputs.name }}
+        id: cache-venv-mypy
+        uses: actions/cache/restore@v4
+        with:
+          path: |
+            venv/lib/python*/site-packages/*__mypyc.cpython-*.so
+            venv/lib/python*/site-packages/mypy*
+            venv/bin/mypy
+          key: >-
+            ${{ runner.os }}-${{ steps.python.outputs.python-version }}-venv_mypy-${{
+            env.CACHE_VERSION }}-${{ steps.fetch-version.outputs.version }}-compiled
+          restore-keys: |
+            ${{ runner.os }}-${{ steps.python.outputs.python-version }}-venv_mypy-${{
+            env.CACHE_VERSION }}-${{ steps.fetch-version.outputs.version }}-compiled-custom
+            ${{ runner.os }}-${{ steps.python.outputs.python-version }}-venv_mypy-${{
+            env.CACHE_VERSION }}-${{ steps.fetch-version.outputs.version }}
+      - name: Install compiled version if available
+        if: steps.cache-venv-mypy.outputs.cache-hit != 'true'
+        id: install-compiled
+        continue-on-error: true
+        run: |
+          . venv/bin/activate
+          tag=${{ steps.fetch-version.outputs.version }}
+          echo "$tag"
+          res=$(gh api \
+            -H "Accept: application/vnd.github+json" \
+            /repos/mypyc/mypy_mypyc-wheels/releases/tags/$tag)
+          py=$(echo ${{ env.DEFAULT_PYTHON }} | cut -d '.' -f 1,2 | tr -d '.')
+          wheel_name=$py-manylinux
+          echo "$wheel_name"
+          url=$(echo $res | jq -r \
+            --arg search_name "$wheel_name" \
+            '.assets[] | select(.name | test($search_name)) .browser_download_url')
+          if [[ -n $url ]]; then
+            echo "Found compiled version"
+            pip install -U $url
+            echo "status=done" >> $GITHUB_OUTPUT
+            echo "key-suffix=-compiled" >> $GITHUB_OUTPUT
+            exit 0
+          fi
+      - name: Install compiled version if available (custom)
+        if: |
+          steps.cache-venv-mypy.outputs.cache-hit != 'true'
+          && steps.install-compiled.outputs.status != 'done'
+          && endsWith( steps.cache-venv-mypy.outputs.cache-matched-key, '-compiled-custom' ) != true
+        id: install-compiled-custom
+        continue-on-error: true
+        run: |
+          . venv/bin/activate
+          tag=${{ steps.fetch-version.outputs.version }}
+          echo "$tag"
+          res=$(gh api \
+            -H "Accept: application/vnd.github+json" \
+            /repos/${{ env.REMOTE }}/mypy-wheels/releases/tags/$tag)
+          py=$(echo ${{ env.DEFAULT_PYTHON }} | cut -d '.' -f 1,2 | tr -d '.')
+          wheel_name=$py-manylinux
+          echo "$wheel_name"
+          url=$(echo $res | jq -r \
+            --arg search_name "$wheel_name" \
+            '.assets[] | select(.name | test($search_name)) .browser_download_url')
+          if [[ -n $url ]]; then
+            echo "Found compiled version"
+            pip install -U $url
+            echo "status=done" >> $GITHUB_OUTPUT
+            echo "key-suffix=-compiled-custom" >> $GITHUB_OUTPUT
+            exit 0
+          fi
+      - name: Install custom dependencies
+        if: |
+          steps.cache-venv-mypy.outputs.cache-matched-key == ''
+          && steps.install-compiled.outputs.status != 'done'
+          && steps.install-compiled-custom.outputs.status != 'done'
+        run: |
+          . venv/bin/activate
+          python --version
+          pip install -U git+https://github.com/${{ env.REMOTE }}/mypy.git@${{ env.BRANCH }}
+      - name: Save mypy version in venv
+        if: |
+          steps.cache-venv-mypy.outputs.cache-hit != 'true'
+          && (
+            steps.cache-venv-mypy.outputs.cache-matched-key == ''
+            || steps.install-compiled.outputs.status == 'done'
+            || steps.install-compiled-custom.outputs.status == 'done'
+          )
+        uses: actions/cache/save@v4
+        with:
+          path: |
+            venv/lib/python*/site-packages/*__mypyc.cpython-*.so
+            venv/lib/python*/site-packages/mypy*
+            venv/bin/mypy
+          key: >-
+            ${{ runner.os }}-${{ steps.python.outputs.python-version }}-venv_mypy-${{
+            env.CACHE_VERSION }}-${{ steps.fetch-version.outputs.version }}${{
+            steps.install-compiled.outputs.key-suffix || steps.install-compiled-custom.outputs.key-suffix }}
+
       - name: Restore mypy cache
-        uses: actions/cache@v4.2.0
+        uses: actions/cache/restore@v4.2.0
         with:
           path: .mypy_cache
           key: >-
@@ -817,6 +943,9 @@ jobs:
         run: |
           . venv/bin/activate
           python --version
+          git branch --show-current
+          # For issues with serialize, add --cache-dir=/dev/null
+          # To install types: --install-types --non-interactive
           mypy homeassistant pylint
       - name: Run mypy (partially)
         if: needs.info.outputs.test_full_suite == 'false'
@@ -825,6 +954,14 @@ jobs:
           . venv/bin/activate
           python --version
           mypy homeassistant/components/${{ needs.info.outputs.integrations_glob }}
+      - name: Save mypy cache
+        if: success() || failure()
+        uses: actions/cache/save@v4
+        with:
+          path: .mypy_cache
+          key: >-
+            ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
+            steps.generate-mypy-key.outputs.key }}
 
   prepare-pytest-full:
     runs-on: ubuntu-24.04
diff --git a/mypy.ini b/mypy.ini
index ce51adc3816259..dc52c7cf7db6b6 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -8,6 +8,7 @@ platform = linux
 plugins = pydantic.mypy
 show_error_codes = true
 follow_imports = normal
+show_traceback = true
 local_partial_types = true
 strict_equality = true
 no_implicit_optional = true
diff --git a/script/hassfest/mypy_config.py b/script/hassfest/mypy_config.py
index ec4d4b3d3a9d78..c7e2126fe15d36 100644
--- a/script/hassfest/mypy_config.py
+++ b/script/hassfest/mypy_config.py
@@ -36,8 +36,11 @@
     "plugins": "pydantic.mypy",
     "show_error_codes": "true",
     "follow_imports": "normal",
+    "show_traceback": "true",
     # "enable_incomplete_feature": ", ".join(  # noqa: FLY002
-    #     []
+    #     [
+    #         "PreciseTupleTypes"
+    #     ]
     # ),
     # Enable some checks globally.
     "local_partial_types": "true",