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Using Anthropic models through Copilot provider returns "Not found" - 1.1.40 #8425

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opened 2026-02-16 18:09:56 -05:00 by yindo · 2 comments
yindo commented 2026-02-16 18:09:56 -05:00
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Originally created by @ThomasCarca on GitHub (Feb 3, 2026).

Originally assigned to: @rekram1-node on GitHub.

Description

I am not getting the issue with any non-anthropic model from the Copilot provider.
I am up to date with the latest release on brew (1.1.40).
I have tried re-connecting the provider/upgrading through opencode upgrade/upgrading through brew upgrade opencode, but this did not solve the issue.
I can access anthropic models just fine through Copilot itself.

Plugins

No response

OpenCode version

1.1.40

Steps to reproduce

Select any anthropic model in opencode (for instance, Sonnet 4.5, Haiko 4.5, Opus 4.5, etc) and prompt anything.
This should result in an opencode error message stating "Not found: Not found"

Screenshot and/or share link

Image

Operating System

macOS 15.6.1

Terminal

iTerm2

Originally created by @ThomasCarca on GitHub (Feb 3, 2026). Originally assigned to: @rekram1-node on GitHub. ### Description I am not getting the issue with any non-anthropic model from the Copilot provider. I am up to date with the latest release on [brew](https://formulae.brew.sh/formula/opencode) (1.1.40). I have tried re-connecting the provider/upgrading through `opencode upgrade`/upgrading through `brew upgrade opencode`, but this did not solve the issue. I can access anthropic models just fine through Copilot itself. ### Plugins _No response_ ### OpenCode version 1.1.40 ### Steps to reproduce Select any anthropic model in opencode (for instance, Sonnet 4.5, Haiko 4.5, Opus 4.5, etc) and prompt anything. This should result in an opencode error message stating "Not found: Not found" ### Screenshot and/or share link <img width="746" height="782" alt="Image" src="https://github.com/user-attachments/assets/850bd445-8e74-4dea-8992-d382359c4e24" /> ### Operating System macOS 15.6.1 ### Terminal iTerm2
yindo added the bug label 2026-02-16 18:09:56 -05:00
yindo closed this issue 2026-02-16 18:09:56 -05:00
yindo commented 2026-02-16 18:09:56 -05:00
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@rekram1-node commented on GitHub (Feb 3, 2026):

Use this brew formula instead: brew install anomalyco/tap/opencode

And it is fixed on latest, the other brew formula isn't maintained by us and is often out of date

@rekram1-node commented on GitHub (Feb 3, 2026): Use this brew formula instead: brew install anomalyco/tap/opencode And it is fixed on latest, the other brew formula isn't maintained by us and is often out of date
yindo commented 2026-02-16 18:09:57 -05:00
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@github-actions[bot] commented on GitHub (Feb 3, 2026):

This issue might be a duplicate of existing issues. Please check:

  • #11585: Using Claude models through Github Copilot returns Not Found: Not Found
  • #11751: GitHub Copilot API returns 404 'Not Found' after upgrading to v1.1.40
  • #11781: Claude models fail with Not Found when used in Copilot agent / Build tasks

These appear to be closed duplicates of the same Copilot/Anthropic integration issue affecting v1.1.40.

Feel free to ignore if your specific case differs from these.

@github-actions[bot] commented on GitHub (Feb 3, 2026): This issue might be a duplicate of existing issues. Please check: - #11585: Using Claude models through Github Copilot returns Not Found: Not Found - #11751: GitHub Copilot API returns 404 'Not Found' after upgrading to v1.1.40 - #11781: Claude models fail with Not Found when used in Copilot agent / Build tasks These appear to be closed duplicates of the same Copilot/Anthropic integration issue affecting v1.1.40. Feel free to ignore if your specific case differs from these.
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Reference: anomalyco/opencode#8425
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