mirror of
https://github.com/coder/coder.git
synced 2026-09-21 20:51:01 +08:00
Michael Suchacz
93c6faf1de
Fixes #27361 (CODAGT-832). ## Problem When an Agents model was configured under a non-gateway provider type (e.g. Anthropic or OpenAI) with a model ID whose first `/`- or `:`-segment matched a built-in provider name (`anthropic`, `azure`, `bedrock`, `google`, `openai`, `openai-compat`, `openrouter`, `vercel`), `chatprovider.ResolveModelWithProviderHint` parsed it as a canonical `provider/model` reference: the prefix was stripped and the request rerouted to the embedded provider type, overriding the provider the admin explicitly assigned. LLM gateways (e.g. LiteLLM) that namespace their catalogs as `bedrock/...` or `anthropic/...` behind an Anthropic- or OpenAI-type provider failed with an opaque upstream "Model not found", and escaping was impossible (`bedrock/bedrock/...` still rerouted). ## Fix A valid provider hint is now authoritative: `ResolveModelWithProviderHint` returns the assigned provider and the verbatim model ID whenever a hint is present. Canonical `provider/model` and `provider:model` parsing applies only to hint-less resolution paths. Every production call site derives the hint from the model config's explicitly assigned AI provider, so the assignment always wins. The save-time guard rejecting slash-namespaced models on OpenRouter-like providers typed as `openai` (provider named `openrouter` or hosted at `openrouter.ai`) is kept: that combination remains a misconfiguration whose correct fix is the `openrouter` provider type, and rejecting it early beats a confusing upstream error. Its wording no longer claims prefix stripping happens. ## Back-compat note A pre-existing config that relied on stripping (e.g. model `anthropic/claude-x` assigned to an Anthropic-type provider pointing at the real Anthropic API) now sends the prefixed ID verbatim and will get a clear upstream model-not-found error; the admin fixes it by editing the model ID. Nothing in the product ever suggested the canonical form for assigned models. ## Validation - Unit: `TestResolveModelWithProviderHint` updated (hints preserve `bedrock/...`, `anthropic/...`, `provider:...` verbatim; hint-less canonical parsing unchanged), red-green verified against the old ordering. Gateway and openai-type provider routing tests assert verbatim pass-through end to end. - Full `./coderd/x/chatd/...` suites plus `TestCreateChatModelConfig`, `TestUpdateChatModelConfig`, and `TestValidateChatModelConfigProviderModel` pass. - Remote dogfood UAT on real models (PASS): an openai-type provider pointed at a Vercel AI Gateway mount returned a real completion for `anthropic/claude-haiku-4.5`, with trace logs confirming `provider=openai model=anthropic/claude-haiku-4.5` (verbatim, not rerouted); gateway-type (`openai-compat`) routing with `deepseek/deepseek-v4-pro-0813` and the model catalog/picker regressions pass. > Mux acted on Mike's behalf to create this PR.