# Grok Build 0.1 Lands on the xAI API in Public Beta — 256K Context, $1/$2 per 1M Tokens, 100+ Tokens/Sec for Agentic Coding

> xAI's coding-focused model goes from CLI-only to a public-beta API at $1 in, $2 out per million tokens.

- Org: xAI
- Date: 2026-05-28
- Category: model, tool
- Source: https://x.ai/news/grok-build-0-1
- Canonical page: https://ai-tldr.dev/releases/xai-grok-build-0-1-api/

## In short

xAI exposes the coding-specialized model that powers the Grok Build CLI as a standalone API endpoint, with text+image inputs, function calling, structured outputs, and 256K context.

## What it is

Grok Build 0.1 is xAI's coding-specialized model — the same engine that powers the Grok Build CLI launched earlier in May. The public-beta API exposes it directly, so any agent framework, IDE plugin, or autonomous build pipeline can hit it as a regular xAI endpoint instead of going through the CLI wrapper.

## How it works

The model accepts text and image inputs (it can read diagrams, UI mockups, or error screenshots), serves output at 100+ tokens/sec, and runs a 256K-token context window. xAI exposes native function calling, structured outputs, and reasoning, with the model trained specifically for agentic coding tasks including web development, debugging, and MCP integration. Public-beta rate limits start at 1,800 req/min and 10M tok/min in us-east-1 and eu-west-1.

## Why it matters

Coding agents have largely been priced and rate-limited around Claude and GPT models. A 100+ tok/s coding model at $1/$2 per million tokens gives builders a third independent provider to spread cost and capacity across, and the 256K context handles the full file trees most agentic loops need without aggressive trimming.

## Who it's for

Developers building coding agents, IDE plugins, or autonomous build pipelines.

## Try it

model id `grok-build-0.1` on the xAI API

## Links

- [Announcement](https://x.ai/news/grok-build-0-1)
- [Model Docs](https://docs.x.ai/developers/models/grok-build-0.1)
- [Grok Build CLI](https://x.ai/cli)
- [OpenRouter Listing](https://openrouter.ai/x-ai/grok-build-0.1)