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xAIGrok Build familyCurrentCode modelReleased May 2026

Grok Build 0.1

Use for coding agents, IDE integrations and repo-level edits.

Model idgrok-build-0.1

Price$1 in, $2 out per 1M tokens

Checked29 September 2026

Where it stands

4newer code models since its release

All code models

Weights
Closed weights; access is hosted only.

How to call it

2 ways to use Grok Build 0.1, with the model id each provider expects.

Providers, model ids, endpoints and docs for Grok Build 0.1
ProviderModel idEndpointDocs
xAI API grok-build-0.1 https://api.x.ai/v1/chat/completions docs.x.ai
OpenRouter x-ai/grok-build-0.1 openrouter.ai

Pricing

Prices for Grok Build 0.1
Input$1 per 1M tokens
Cached input$0.20 per 1M tokens
Output$2 per 1M tokens
Input, prompts over 200K tokens$2 per 1M tokens
Output, prompts over 200K tokens$4 per 1M tokens

As published: “per 1M tokens (USD)”.

Source: docs.x.ai, checked 29 September 2026.

Specs

Input
Text and images
Output
Text
Context window
256,000 tokens
Max output
Not published
Open weights
No
Licence
Proprietary
Released
May 2026
Status
Current
Type
Code model

What stands out

What its maker marketed at launch, and what people found later, each with its source.

  • Agentic coding model

    Reasoning model tuned for agentic software engineering and workflow tasks; powers xAI’s Grok Build coding agent.

    Source: docs.x.ai

  • Low-cost coding tier

    $1/$2 per 1M tokens with 256K context - cheapest current Grok text model.

    Source: docs.x.ai

Notes

xAI coding model (successor to grok-code-fast line).

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

Not yet checked against an official source: Release month from OpenRouter listing (2026-05-20); exact date not verified.