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fix(core): follow models.dev packages for Copilot fallback routing #54210

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Merged
rekram1-node merged 1 commit into from
Oct 10, 2026
Merged

fix(core): follow models.dev packages for Copilot fallback routing #54210

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14 changes: 13 additions & 1 deletion packages/core/src/plugin/provider/github-copilot.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -226,10 +226,22 @@ export const GithubCopilotPlugin = define({
})
return
}
// Without the live model list, the models.dev package says which Copilot API serves
// each model: Anthropic Messages stays native, OpenAI means Responses, and anything
// else goes through the bundled Copilot SDK's model ID fallback.
for (const id of item.models.keys()) {
evt.models.update(item.provider.id, id, (model) => {
if (model.package === "@opencode/ai/providers/anthropic") {
if (loaded.baseURL)
model.settings = Provider.mergeOverlay(model.settings, { baseURL: `${loaded.baseURL}/v1` })
return
}
const responses = model.package === "@opencode/ai/providers/openai"
model.package = Provider.aisdk("@ai-sdk/github-copilot")
if (loaded.baseURL) model.settings = Provider.mergeOverlay(model.settings, { baseURL: loaded.baseURL })
model.settings = Provider.mergeOverlay(model.settings, {
...(loaded.baseURL ? { baseURL: loaded.baseURL } : {}),
...(responses ? { endpoint: "responses" } : {}),
})
})
}
})
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