Add GitHub Models in Actions docs (#55174)

Co-authored-by: Sophie <29382425+sophietheking@users.noreply.github.com>

content/github-models/integrating-ai-models-into-your-development-workflow.md

@@ -30,6 +30,47 @@ If you have a {% data variables.product.prodname_copilot_short %} subscription,
     * Executing prompts using a particular model. This is especially useful when you want to use a model that is not currently available in multi-model {% data variables.product.prodname_copilot_chat_short %}.
     * Listing models currently available through {% data variables.product.prodname_github_models %}
 
+## Using AI models with {% data variables.product.prodname_actions %}
+
+You can use the {% data variables.product.prodname_actions %} token (`GITHUB_TOKEN`) to call AI models directly inside your workflows.
+
+### Setting permissions
+
+To use AI models in your workflows, you need to ensure that the `models` permission is enabled in your workflow configuration. This permission allows workflows to access the {% data variables.product.prodname_github_models %} inference API. You can either set this permission itself or use the general `read-all` or `write-all` permissions. See [AUTOTITLE](/rest/overview/permissions-required-for-github-apps?apiVersion=2022-11-28#repository-permissions-for-actions).
+
+### Writing your workflow file
+
+You can call the inference API directly from your workflow. For instance:
+
+```yaml
+name: Use GitHub Models
+
+on:
+  workflow_dispatch:
+
+permissions:
+  models: read
+
+jobs:
+  call-model:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Call AI model
+      run: |
+         curl -X POST "https://models.inference.ai.azure.com/chat/completions" \
+            -H "Content-Type: application/json" \
+            -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
+            -d '{
+               "messages": [
+                  {
+                     "role": "user",
+                     "content": "Explain the concept of recursion."
+                  }
+               ],
+               "model": "gpt-4o"
+            }'
+```
+
 ## Using AI models from the command line
 
 > [!NOTE] The {% data variables.product.prodname_github_models %} extension for {% data variables.product.prodname_cli %} is in {% data variables.release-phases.public_preview %} and is subject to change.