fix(deps): correct minimum versions for supported Python releases

.github/workflows/test-dependency-installs.yml

@@ -0,0 +1,73 @@
+name: Dependency Installations
+
+on:
+  pull_request:
+    branches: [main, litellm_internal_staging, litellm_oss_staging, "litellm_**"]
+  push:
+    branches: [main, litellm_internal_staging]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  dependency-wheel:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
+        with:
+          persist-credentials: false
+      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+        with:
+          python-version: "3.12"
+      - uses: ./.github/actions/setup-uv-with-retries
+        with:
+          version: "0.10.9"
+      - run: rustup toolchain install --no-self-update
+      - uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
+        with:
+          workspaces: litellm-rust
+          cache-on-failure: true
+      - run: uv build --wheel --out-dir dist
+      - uses: actions/upload-artifact@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1 # v4.6.1
+        with:
+          name: dependency-wheels
+          path: dist/*.whl
+          if-no-files-found: error
+
+  base-sdk-install:
+    needs: dependency-wheel
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    strategy:
+      fail-fast: false
+      matrix:
+        python: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        resolution: [lowest-direct]
+        include:
+          - python: "3.12"
+            resolution: highest
+    steps:
+      - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
+        with:
+          persist-credentials: false
+      - uses: ./.github/actions/setup-uv-with-retries
+        with:
+          version: "0.10.9"
+      - uses: actions/download-artifact@95815c38cf2ff2164869cbab79da8d1f422bc89e # v4.2.1
+        with:
+          name: dependency-wheels
+          path: dist
+      - name: Install the wheel and check the base SDK
+        env:
+          TEST_PYTHON: ${{ matrix.python }}
+          RESOLUTION: ${{ matrix.resolution }}
+        run: |
+          uv venv /tmp/base-sdk --python "$TEST_PYTHON"
+          uv pip install --python /tmp/base-sdk/bin/python \
+            --resolution "$RESOLUTION" --no-sources -r pyproject.toml dist/litellm-[0-9]*.whl
+          /tmp/base-sdk/bin/python -I tests/base_sdk_tests/check_base_sdk_install.py

pyproject.toml

@@ -18,13 +18,15 @@ dependencies = [
     "httpx[http2]>=0.28.0,<1.0",
     "openai>=2.20.0,<3.0.0",
     "python-dotenv>=1.0.0,<2.0",
-    "tiktoken>=0.8.0,<1.0",
+    "tiktoken>=0.8.0,<1.0; python_version < '3.14'",
+    "tiktoken>=0.12.0,<1.0; python_version >= '3.14'",
     "importlib-metadata>=8.0.0,<9.0",
     "tokenizers>=0.21.0,<1.0",
     "click>=8.0.0,<9.0",
     "jinja2>=3.1.6,<4.0",
     "aiohttp>=3.14.2,<4.0",
-    "pydantic>=2.10.0,<3.0.0",
+    "pydantic>=2.11.0,<3.0.0; python_version < '3.14'",
+    "pydantic>=2.12.0,<3.0.0; python_version >= '3.14'",
     "pydantic-settings>=2.14.1,<3.0",
     "jsonschema>=4.0.0,<5.0",
     "boto3>=1.43.1,<2.0",