Github Copilot not working in VSCode

[abhiroopsen2025-dot]

🏷️ Discussion Type

Bug

💬 Feature/Topic Area

Copilot in GitHub

Body

When im trying to chat with copilot in VSCode , its throwing me this error -

"unhandled status from server: 400 {"error":{"message":"The requested model is not supported.","code":"model_not_supported","param":"model","type":"invalid_request_error"}}"

Please help me on how can i fix it

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[marlonwq]

You likely used up all the model's tokens; try changing the model.

[gklrajan]

two things to check:

• are you using a model that is supported by your account?
• have you hit your token consumption ceiling?

one of them is likely why you are seeing this. :)

[roohan-514]

@abhiroopsen2025-dot The model_not_supported error means VS Code is trying to use a model your Copilot plan doesn't include. Here's how to fix it:

1. Check your Copilot plan — open the Copilot status icon in the bottom-right of VS Code. If you're on Copilot Free (the default), you can only use the base model. GPT-4o, Claude 3.5, and other premium models require Copilot Pro or Copilot Enterprise. The free tier comes with 2,000 completions and 50 chat requests per month.
2. Switch the model in VS Code — click the model selector in the Copilot Chat input box (it might say "GPT-4o" or similar). Change it to the default/basic model that's included with your plan. If the selector is hidden, try typing /model in the chat to see available options.
3. Re-authenticate — this can also happen if your GitHub auth token has expired. In VS Code:

• Open Command Palette (Ctrl+Shift+P)
• Search for "GitHub: Sign Out" → sign out
• Then "GitHub: Sign In" → sign back in
• Restart VS Code

4. Update the extension — make sure GitHub Copilot and GitHub Copilot Chat extensions are up to date. An old extension version can try to request models that have been renamed or deprecated.
5. If you've hit your limit — the Free plan has 50 chat requests/month. If you've used them up, wait for the reset or consider upgrading to Copilot Pro ($10/month, unlimited chat) if you need more.