# Cerebras

Rate-limited free (Free Trial) · API key · code · last checked 30 Aug 2026

Create a key at https://inference-docs.cerebras.ai/support/rate-limits and call it from your harness.

Wafer-scale hardware, 2,000+ tok/s. Free tier caps context at 8K (temporary). Per-model limits on a rotating shortlist. No credit card.

Source: https://inference-docs.cerebras.ai/support/rate-limits

| Model | Cost | Context | RPM | TPM | RPD | Day tokens | Verified |
| --- | --- | --- | --- | --- | --- | --- | --- |
| gpt-oss-120b | zsh | 8K cap on free tier | 5 | 30K | Not published | 1M tokens/day (per model) | 2026-08-30 |
| gemma-4-31b | zsh | 8K cap on free tier | 5 | 30K | Not published | 1M tokens/day (per model) | 2026-08-30 |

Machine-readable: /data/cerebras.json

Numbers cross-checked against official docs and third-party trackers as of 2026-08-30. Limits change without notice — this is a map, not a contract.