Payload Optimization: msgpack and gzip /v1/chat/completions and /v1/completions now accept request bodies...

UpdateApr 10, 2026UnverifiedAdded Sep 24, 2026

Payload Optimization: msgpack and gzip /v1/chat/completions and /v1/completions now accept request bodies encoded with msgpack (Content-Type: application/vnd.msgpack) and/or compressed with gzip (Content-Encoding: gzip). This can significantly reduce payload size and improve TTFT for requests with long prompts.

Cerebras's release notes

More Cerebras Inference releases

Every Cerebras Inference release

Date	Release	Type
Mar 31	New Sampling Parameters The following parameters are now available on all models: - frequency_penalty –...unverified Update	Update
Mar 30	Streaming: Server-Sent Events (SSE) Streaming responses for Chat Completions (/v1/chat/completions) and...unverified Update	Update
Apr 22	New parameter: prompt_cache_key /v1/chat/completions and /v1/completions now accept an optional...unverified Update	Update
Apr 24	Validation Errors Now Return 400 Instead of 422 API requests that fail validation now return HTTP 400 Bad...unverified Update	Update
Mar 27	Rolling out selective 4-bit weight-only quantization for supported models, targeting non-sensitive layers...unverified Update	Update
Mar 26	Temperature Parameter: Increased Maximum The maximum allowed value for the temperature parameter for Chat...unverified Update	Update
Mar 26	developer Message Role (gpt-oss-120b) The Chat Completions API now supports the developer message role for...unverified Update	Update
Mar 25	Logprob Consistency Logprobs are now computed from the model's raw output, before applying temperature scalingunverified Update	Update

Also shipped on Apr 10, 2026

Cerebras in April 2026

Date	Company	Release	Product	Type
Apr 10	Sigma Computing	What's new in Sigmaunverified Sigma Computing SigmaGA	Sigma	GA
Apr 10	Shopify	New discount fields in the Storefront API's cart typesunverified Shopify Shopify developer platformPricing	Shopify developer platform	Pricing
Apr 10	Neon	Neon Auth Plugins tab, Neon Skill for coding agents, Sentry and Neon MCP guide release - Apr 10, 2026unverified Neon NeonUpdate	Neon	Update
Apr 10	Cloudflare	Browser Isolation - Canvas Remoting optimizes performance for productivity applicationsunverified Cloudflare Cloudflare developer platformUpdate	Cloudflare developer platform	Update
Apr 10	Cloudflare	Browser Run - Browser Rendering adds Chrome DevTools Protocol (CDP) and MCP client supportunverified Cloudflare Cloudflare developer platformUpdate	Cloudflare developer platform	Update
Apr 10	Cloudflare	Cloudflare Fundamentals - API tokens now detectable by secret scanning toolsunverified Cloudflare Cloudflare developer platformUpdate	Cloudflare developer platform	Update

Sources: each vendor's own release notes, changelogs and GitHub releases, read daily to monthly by how often it posts. Logos via logo.dev; trademarks belong to their owners.

More Cerebras Inference releases

Also shipped on Apr 10, 2026

New releases by email