diff --git a/.github/workflows/python.yaml b/.github/workflows/python.yaml
index 183f9ec..3a7b84a 100644
--- a/.github/workflows/python.yaml
+++ b/.github/workflows/python.yaml
@@ -1,4 +1,4 @@
-name: Python checks
+name: Check example files are linted and formatted
 
 on:
   push:
@@ -15,11 +15,15 @@ jobs:
           uses: actions/setup-python@v5
           with:
             python-version: "3.11"
-        - name: Install dependencies
+        - name: Install uv
+          uses: astral-sh/setup-uv@v6
+        - name: Set up virtual environment and install dependencies
           run: |
-            python -m pip install --upgrade pip
-            pip install -r requirements-dev.txt
+            uv venv .venv
+            uv pip install -r requirements-dev.txt
         - name: Lint with ruff
-          run: ruff check .
+          run: |
+            uv run ruff check .
         - name: Check formatting with black
-          run: black . --check --verbose
+          run: |
+            uv run black . --check --verbose
diff --git a/.github/workflows/test-github-models.yaml b/.github/workflows/test-github-models.yaml
new file mode 100644
index 0000000..d8a5741
--- /dev/null
+++ b/.github/workflows/test-github-models.yaml
@@ -0,0 +1,48 @@
+name: Run example files with GitHub models
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'requirements.txt'
+      - '.github/workflows/test-github-models.yaml'
+      - 'chat.py'
+      - 'spanish/chat.py'
+
+jobs:
+  test-github-models:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      models: read
+
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Set up Python 3.11
+        uses: actions/setup-python@v5
+        with:
+          python-version-file: "pyproject.toml"
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v6
+
+      - name: Install dependencies
+        run: |
+          uv venv .venv
+          uv pip install -r requirements.txt
+
+      - name: Test chat files with GitHub Models
+        env:
+          API_HOST: github
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_MODEL: openai/gpt-4o-mini
+        run: |
+          source .venv/bin/activate
+          files=("chat.py" "spanish/chat.py")
+          for file in "${files[@]}"; do
+            echo "Testing $file..."
+            python "$file" || exit 1
+          done
diff --git a/reasoning.py b/reasoning.py
index 5bb30ea..8a0e2bd 100644
--- a/reasoning.py
+++ b/reasoning.py
@@ -37,11 +37,19 @@
     messages=[
         {
             "role": "user",
-            "content": "Multiply together 1897234 and 12903812039.",
+            "content": "How many r's are in strawberry? Answer in a complete sentence with explanation.",
         },
     ],
-    reasoning_effort="minimal",
-    verbosity="low",
+    reasoning_effort="low",
 )
+
+# Reasoning contnet is only available for gpt-oss models running on Ollama
+# To see reasoning traces with gpt-5 family, use the Responses API
+if hasattr(response.choices[0].message, "reasoning"):
+    print("🤔 Thinking...")
+    print(response.choices[0].message.reasoning)
+    print("🛑 Done thinking.")
+print("Response:")
 print(response.choices[0].message.content)
+print("Usage:")
 print(response.usage)