Introducing the Universal Managed Agents API.Read the announcement
SpaceXAI

Providers/SpaceXAI

SpaceXAI

Grok — frontier reasoning models with real-time knowledge — plus Cursor's Composer and headless CLI agent.

Operational
Model LabHarness BuilderFrontierBring-Your-Own-Key

Models on Brainbase

Grok

2 variants available1 new

grok-4.6New
grok-4.5

Composer

1 variant available1 new

cursor/composer-2.5New

Harnesses by SpaceXAI

Agent runtimes built by this vendor, managed end-to-end on Brainbase.

About

SpaceXAI builds the Grok family of frontier models, known for strong reasoning performance and a distinct personality, and — since acquiring Cursor (Anysphere) — the most widely used AI code editor and Composer, its coding model tuned for speed inside the agent loop.

On Brainbase, Grok models are platform-billed and run inside any open harness — OpenCode or Qwen Code — selected per task like any other platform model.

The Cursor CLI runs as a native harness: bring your Cursor API key, and turns are served by Composer and billed to your Cursor account — no platform model routing involved.

Available on Brainbase:

  • Grok: SpaceXAI's frontier reasoning line, with 500k tokens of context, including Grok 4.6, Grok 4.5
  • Composer: Cursor's frontier coding model, native to its agent, including Composer 2.5

Run these models in Cursor CLI, Codex, OpenCode, or Qwen Code — selected per task like any other platform model.

Try it on Brainbase

One API call boots a managed sandbox on the opencode harness pointed at grok-4.6. Hosting, scaling, and billing are handled for you.

curl -X POST https://api.brainbaselabs.com/v2/agents \
  -H "Authorization: Bearer $BRAINBASE_API_KEY" \
  -d '{
    "title": "my-agent",
    "runtime_kind": "opencode",
    "default_model": "grok-4.6"
  }'
runtime_kind/opencodemodel/grok-4.6