Grok Build 0.1
xAI coding model (successor to grok-code-fast line). Release month from OpenRouter listing (2026-05-20); exact date not verified.
- Context window
- 256,000 tokens
- Input
- text, image
- Output
- text
- License
- proprietary
- Pricing
- input: $1 · cached input: $0.2 · output: $2 · input over 200k: $2 · output over 200k: $4 (per 1M tokens (USD)) source
- Verified
- 2026-09-29
How to call it
| Provider | Model id | Endpoint / URL | Docs |
|---|---|---|---|
| xAI API | grok-build-0.1 | https://api.x.ai/v1/chat/completions | docs |
| OpenRouter | x-ai/grok-build-0.1 | openrouter.ai/x-ai/grok-build-0.1 | — |
Notable capabilities (2)
- Agentic coding model: Reasoning model tuned for agentic software engineering and workflow tasks; powers xAI's Grok Build coding agent. source
- Low-cost coding tier: $1/$2 per 1M tokens with 256K context - cheapest current Grok text model. source
Use for coding agents, IDE integrations and repo-level edits.
curl https://api.x.ai/v1/chat/completions -H "Authorization: Bearer $XAI_API_KEY" -H "Content-Type: application/json" \
-d '{"model":"grok-build-0.1","messages":[{"role":"user","content":"Write a Python quicksort"}]}'
Sources: https://docs.x.ai/docs/models/grok-build-0.1 , https://docs.x.ai/docs/models
Other xAI models
Grok 4.7 · Grok Voice Transcribe 2.0 · Grok Imagine Image 2.0 · Grok Voice Think Fast 2.0 · Grok Imagine Video 1.5 · Grok Text to Speech (Grok TTS API) · Grok 4.3 · Grok 4.20 (Reasoning / Non-reasoning / Multi-Agent)