Cerebras

Cerebras provides high-speed OpenAI-compatible inference on custom inference hardware. OpenClaw includes a bundled Cerebras provider plugin with a static four-model catalog.

Property	Value
Provider id	`cerebras`
Plugin	bundled, `enabledByDefault: true`
Auth env var	`CEREBRAS_API_KEY`
Onboarding flag	`--auth-choice cerebras-api-key`
Direct CLI flag	`--cerebras-api-key <key>`
API	OpenAI-compatible (`openai-completions`)
Base URL	`https://api.cerebras.ai/v1`
Default model	`cerebras/zai-glm-4.7`

Getting started

Get an API key
Create an API key in the Cerebras Cloud Console.

Run onboarding

openclaw onboard --auth-choice cerebras-api-key

openclaw onboard --non-interactive \
  --auth-choice cerebras-api-key \
  --cerebras-api-key "$CEREBRAS_API_KEY"

export CEREBRAS_API_KEY=csk-...

Verify models are available
Terminal window
```
openclaw models list --provider cerebras
```
The list should include all four bundled models. If CEREBRAS_API_KEY is unresolved, openclaw models status --json reports the missing credential under auth.unusableProfiles.

Non-interactive setup

openclaw onboard --non-interactive \
  --mode local \
  --auth-choice cerebras-api-key \
  --cerebras-api-key "$CEREBRAS_API_KEY"

Built-in catalog

OpenClaw ships a static Cerebras catalog that mirrors the public OpenAI-compatible endpoint. All four models share a 128k context and 8,192 max-output tokens.

Model ref	Name	Reasoning	Notes
`cerebras/zai-glm-4.7`	Z.ai GLM 4.7	yes	Default model; preview reasoning model
`cerebras/gpt-oss-120b`	GPT OSS 120B	yes	Production reasoning model
`cerebras/qwen-3-235b-a22b-instruct-2507`	Qwen 3 235B Instruct	no	Preview non-reasoning model
`cerebras/llama3.1-8b`	Llama 3.1 8B	no	Production speed-focused model

Manual config

The bundled plugin usually means you only need the API key. Use explicit models.providers.cerebras config when you want to override model metadata or run in mode: "merge" against the static catalog:

{
  env: { CEREBRAS_API_KEY: "csk-..." },
  agents: {
    defaults: {
      model: { primary: "cerebras/zai-glm-4.7" },
    },
  },
  models: {
    mode: "merge",
    providers: {
      cerebras: {
        baseUrl: "https://api.cerebras.ai/v1",
        apiKey: "${CEREBRAS_API_KEY}",
        api: "openai-completions",
        models: [
          { id: "zai-glm-4.7", name: "Z.ai GLM 4.7" },
          { id: "gpt-oss-120b", name: "GPT OSS 120B" },
        ],
      },
    },
  },
}

Model providers

Choosing providers, model refs, and failover behavior.

Thinking modes

Reasoning effort levels for the two reasoning-capable Cerebras models.

Configuration reference

Agent defaults and model configuration.

Models FAQ

Auth profiles, switching models, and resolving “no profile” errors.