Validation Errors Now Return 400 Instead of 422 API requests that fail validation now return HTTP 400 Bad...

UpdateApr 24, 2026UnverifiedAdded Sep 24, 2026

Validation Errors Now Return 400 Instead of 422 API requests that fail validation now return HTTP 400 Bad Request instead of 422 Unprocessable Entity, aligning the HTTP status code with standard behavior across major inference providers.

Topics: Developer tools

Cerebras's release notes

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Every Cerebras Inference release

Date	Release	Type
Apr 22	New parameter: prompt_cache_key /v1/chat/completions and /v1/completions now accept an optional...unverified Update	Update
Apr 27	New dedicated models: GLM 5, GLM 5.1, and Kimi K2.6 Z.AI's GLM 5 and GLM 5.1 and Moonshot AI's Kimi K2.6 are...unverified Update	Update
May 1	Projects is now generally available Projects is out of private preview and available to all organizationsunverified GA	GA
Apr 10	Payload Optimization: msgpack and gzip /v1/chat/completions and /v1/completions now accept request bodies...unverified Update	Update
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
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

Also shipped on Apr 24, 2026

Cerebras in April 2026

Date	Company	Release	Product	Type
Apr 24	Sigma Computing	What's new in Sigmaunverified Sigma Computing SigmaGA	Sigma	GA
Apr 24	Databricks	Unity Catalog OSS Unity Catalog AI 0.4.0unverified Databricks Unity CatalogUpdate	Unity Catalog	Update
Apr 24	Neon	Organization spend limits, snapshot storage consumption API, One-click Neon MCP setup for Kiro, durable AI agents, and agent-readable docs release - Apr 24, 2026unverified Neon NeonUpdate	Neon	Update
Apr 24	Cloudflare	Gateway, Cloudflare One - Network Session Logs now available for all on-rampsunverified Cloudflare Cloudflare developer platformUpdate	Cloudflare developer platform	Update
Apr 24	Cloudflare	Terraform - Terraform v5.19.0 now availableunverified Cloudflare Cloudflare developer platformUpdate	Cloudflare developer platform	Update
Apr 24	Cloudflare	Terraform - Automate migration from Cloudflare's Terraform v4 to v5 providerunverified 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.

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Also shipped on Apr 24, 2026

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