Cerebras

OpenAI chat/completions · serves gemma-4-31b as gemma-4-31b · probed live 2026-08-29 · back to the matrix

Inference

A − 1 high − 0 medium severity, per the ladder; flags below.

Billing

✓

Reported usage consistent with bytes on the wire.

Caching

Yes

Reused already-seen context on 3/3 cold→warm trials. Speed numbers →

Flags

high inference Images in tool results: rejected or silently blinded on several providers
The model reads images returned by tools - the reference provider delivers them, perception-judged, and several OpenAI-compat providers prove the standard shape works. The failing providers fail on schema choice, not...

Every flag links to its finding - evidence, repro, and disclosure records live there; the deepest findings have full writeup pages.