gpt-oss-120b on Cerebras
Cerebras Trial credit
The catch: Needs a payment method, and the $5 credit lasts 30 days; after that API and Playground access stop until you buy credits. Cerebras labels its self-serve tier for development and evaluation, not production.
| Access | Trial credit |
|---|---|
| Free limits | On the $5, 30-day Free Trial: 5 requests a minute, 30K uncached (90K total) tokens a minute, 1M tokens an hour and a day; 65k context and 32k max output on the trial. |
| Modality | text, code |
| Credit card | Required |
| Commercial use | – |
| Trains on your data | No |
| Licence or terms | Cerebras Terms of Use (effective 27 Aug 2024) |
| Context window | 65,536 tokens |
| Model id | gpt-oss-120b |
| Base URL | https://api.cerebras.ai/v1 |
| Last checked | 8 Oct 2026 |
How to use gpt-oss-120b
It speaks the OpenAI API at https://api.cerebras.ai/v1, so the OpenAI SDK you already use works once you change the base URL and key.
curl https://api.cerebras.ai/v1/chat/completions -H "Content-Type: application/json" -H "Authorization: Bearer $CEREBRAS_API_KEY" -d '{"model":"gpt-oss-120b","messages":[{"role":"user","content":"Hello"}]}'I want to try the AI model "gpt-oss-120b" on Cerebras with its free trial credit (model id: gpt-oss-120b). Please: 1. Check the provider docs and give me the exact steps to claim the free credit and create an API key. 2. Give me a minimal working example that reads the key from an environment variable. 3. Tell me how much the credit covers, when it runs out or expires, and whether a card is charged after. Listed limits: 5 RPM · 30K TPM · 1M tokens/day (trial). 4. Tell me which provider has a renewing free tier for the same model, if any.
Before you ship on it
- Needs a payment method, and the $5 credit lasts 30 days; after that API and Playground access stop until you buy credits. Cerebras labels its self-serve tier for development and evaluation, not production.
- The Cerebras Terms of Use (effective 27 Aug 2024) do not address commercial use of the API on the trial. cerebras.ai/pricing marks the self-serve Developer tier 'For development, evaluation, and experimentation; not…
- Free tiers are shared capacity: treat the limits as a ceiling, not a promise, and keep a paid fallback.
Questions
Is gpt-oss-120b on Cerebras free?
Yes. Cerebras offers it as trial credit, with these limits: 5 RPM · 30K TPM · 1M tokens/day (trial).
Can I use gpt-oss-120b on Cerebras commercially?
The provider’s terms do not say. Ask them before you build a product on it.
How do I start with gpt-oss-120b on Cerebras?
It speaks the OpenAI API at https://api.cerebras.ai/v1, so the OpenAI SDK you already use works once you change the base URL and key.
Source: inference-docs.cerebras.ai/support/rate-limits, checked 8 Oct 2026.