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fix: strip model variant suffix for API key auth (#1097) (#1099)

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* fix: strip model variant suffix for all auth methods, not just OAuth (#1097)

The model ID variant suffix (e.g., `[1m]` in `claude-opus-4-6[1m]`) was
only stripped for OAuth token auth. When using an API key, the suffix was
sent to the Anthropic API as-is, causing a 400 "upstream_error" because
`claude-opus-4-6[1m]` is not a valid API model ID.

The default Anthropic model is `claude-opus-4-6[1m]` (1M context variant),
so every API key user hits this on every request.

Fix: strip `[...]` suffix unconditionally for all auth methods.

* fix: update source-reading tests for post-refactor file locations

triage-dispatch.test.ts: read auto-post-unit.ts (dispatch logic moved
from auto.ts) and update comment string matches to reflect renamed
section headers.

token-profile.test.ts: read preferences-types.ts, preferences-validation.ts,
and preferences-models.ts (GSDPreferences interface and validation logic
split from preferences.ts).
This commit is contained in:
Jeremy McSpadden 2026-03-18 00:31:40 -05:00 • committed by GitHub
parent b20e7b065a
commit 155c32e01b
1 changed files with 3 additions and 2 deletions
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5
packages/pi-ai/src/providers/anthropic.ts
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@ -709,10 +709,11 @@ function buildParams(
options?: AnthropicOptions,
): MessageCreateParamsStreaming {
const { cacheControl } = getCacheControl(model.baseUrl, options?.cacheRetention);
// For OAuth (Claude Max/Pro), strip variant suffixes like [1m] from model ID.
// Strip variant suffixes like [1m] from model ID before sending to the API.
// The API only accepts the base model ID (e.g. "claude-opus-4-6"),
// not internal variant identifiers (e.g. "claude-opus-4-6[1m]").
const apiModelId = isOAuthToken ? model.id.replace(/\[.*\]$/, "") : model.id;
// This applies to all auth methods — API keys, OAuth, and Copilot alike.
const apiModelId = model.id.replace(/\[.*\]$/, "");
const params: MessageCreateParamsStreaming = {
model: apiModelId,
messages: convertMessages(context.messages, model, isOAuthToken, cacheControl),