Copilot Chat Auto mode fails: no available model found in known endpoints

[evertonmadureira]

🏷️ Discussion Type

Bug

💬 Feature/Topic Area

Copilot Agent Mode

Body

GitHub Copilot Chat Auto mode fails with the following error:

"Auto mode failed: no available model found in known endpoints"

Manual model selection works correctly and chat responses are returned normally.
Authentication is valid and GitHub Copilot Chat is enabled.

The issue only affects Auto mode (automatic model selection).
This breaks the cost-control behavior because Auto mode is used to reduce Premium Requests usage by selecting non-premium models when possible.

Environment:

• OS: Windows
• Editor: VS Code (Stable)
• GitHub Copilot enabled
• GitHub Copilot Chat enabled

The issue appeared recently and was not caused by local configuration.
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[Leocm123]

Hi! This error usually means the Copilot extension can't reach the model discovery endpoint. Here are the most common causes and fixes:

1. Update the Copilot extension
Auto mode was introduced in recent versions. Make sure you're on the latest GitHub Copilot and GitHub Copilot Chat extensions in VS Code:

• Go to Extensions → GitHub Copilot → check for updates
  2. Check your Copilot plan
  Auto mode requires a plan that supports multiple models (Copilot Pro or higher). If your plan was recently changed, Auto mode may be temporarily unavailable.

3. Reload VS Code / re-authenticate

Ctrl+Shift+P → "Developer: Reload Window"

Or try signing out and back in:

Ctrl+Shift+P → "GitHub Copilot: Sign Out" → Sign in again

4. Check network/proxy settings
Auto mode queries https://api.githubcopilot.com to discover available models. If you're behind a corporate proxy or firewall, this endpoint might be blocked. Try on a direct connection to confirm.

5. Known intermittent issue
There have been recent reports of Auto mode failing intermittently on the GitHub side. If none of the above helps, it may resolve on its own — or open a support ticket at https://support.github.com/contact.

Hope this helps! 🙌

[ghostinhershell]

Hi @evertonmadureira,

Are you attempting to use a particular model when encountering this error? I ask because this error may be related to yesterday's announcement: Announcement: Changes to GitHub Copilot Individual Plans.