feat(cerebras): add text completion support - #1738
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Backport four additive provider changes from upstream PRs (targeted at the 1.x main line) into our 2.0.0-based fork, hand-porting where our local additions (pricing configs, createModelResponse) caused context drift rather than real conflicts: - fireworks-ai: emit empty choices[] when a stream chunk has none, preventing stream-transform crashes (Portkey-AI#1727) - cerebras: add text-completion (/completions) support (Portkey-AI#1738) - openrouter: add image generation via /v1/images (Portkey-AI#1722) - requesty: new OpenAI-compatible router provider (Portkey-AI#1729) Skipped src/data/providers.json from the Requesty PR — it is control-plane metadata with no runtime references in src/. Generated with [Claude Code](https://claude.ai/code) via [Happy](https://happy.engineering) Co-Authored-By: Claude <noreply@anthropic.com> Co-Authored-By: Happy <yesreply@happy.engineering>
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Closes #1342
Cerebras was wired for chat completions only. This adds support for its text-completion (
/completions) endpoint, mirroring the existing pattern used by the Lambda and Nebius providers.Changes:
src/providers/cerebras/api.ts: route thecompletefunction to/completions.src/providers/cerebras/index.ts: registercomplete: completeParams(...)and addcomplete: trueto the response transformers.The excluded params (
frequency_penalty,presence_penalty,logit_bias,best_of,n) are the ones the Cerebras/completionsAPI does not accept, per their API reference. Supported params (logprobs,echo,stop,seed,top_p,temperature,max_tokens,user) are left in place.Verified locally:
npm run buildcompiles successfully and the two changed files type-check clean.