Cerebras

Wafer-scale hardware; the fastest tokens/sec on the market, with a free tier. Small catalog, extreme speed.

Get an API key

1. Sign up or log in at cloud.cerebras.ai
2. Click 'API Keys' in the left nav
3. Click 'Create API Key' and name it
4. Copy the key and store it securely
5. Export it as CEREBRAS_API_KEY

Create a key ↗ · Pricing ↗

Free dev tier: 1M tokens/day, no card, ~30 req/min (8k context cap).

Enable

export CEREBRAS_API_KEY=...        # shell profile — survives forever

or in the terminal — validates the key live before saving:

/enable cerebras

or pick any locked 🔒 Cerebras model in /models and paste the key inline.

Models

Starter menu (once enabled, /models fetches the provider's full live list):

• gpt-oss-120b
• zai-glm-4.7
• llama-3.3-70b
• gemma-4-31b

Switch anytime — /model gpt-oss-120b fuzzy-matches; context carries over.

SDK

from mantis_agent import MantisAgentOptions
options = MantisAgentOptions(
    model="gpt-oss-120b",
    backend="https://api.cerebras.ai/v1",     # key read from $CEREBRAS_API_KEY
)

Notes

• Free tier available.
• Catalog is small but every model streams at 1000+ tok/s.