# Grok Build 0.1

> Grok Build 0.1 is an xAI coding and automation model with text and image inputs, a 256,000-token context window, function calling, structured outputs, and reasoning support.

**ID**: `x-ai/grok-build-0.1`  
**Creator**: xAI  
**Category**: multimodal  
**Context**: 256K tokens  
**Pricing**: $1.00 / $2.00 per 1M · billed by your provider (BYOK)  
**Released**: 2026-05-21  
**Web page**: https://anyrouter.dev/model/x-ai/grok-build-0.1

**Input modalities**: text, image  
**Output modalities**: text  

**Tokenizer**: Grok

**Capabilities**: chat, coding, reasoning, vision, function-calling, structured-output, streaming

**Aliases**: `grok-build-0.1`, `xai/grok-build-0.1`, `grok-code-fast-1`, `grok-code-fast`, `grok-code-fast-1-0825`

## Usage

**Endpoint**: `POST https://anyrouter.dev/api/v1/chat/completions`

```bash
curl https://anyrouter.dev/api/v1/chat/completions \
  -H "Authorization: Bearer $ANYROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "x-ai/grok-build-0.1",
  "messages": [
    {
      "role": "user",
      "content": "Say hi in 3 words."
    }
  ]
}'
```

## Providers

| Provider | Input | Output |
| --- | --- | --- |
| xai-byok | $1.10/M (list) | $2.20/M (list) |
| openrouter-byok | $1.00/M (list) | $2.00/M (list) |
| opencode-zen-byok | $1.10/M (list) | $2.20/M (list) |
| router-byok | $1.00/M (list) | $2.00/M (list) |

BYOK routes are billed by your own provider key — AnyRouter charges $0. Rates marked (list) are the provider's published list price.

## Benchmarks

- **SciCode**: 0.5

Benchmark data from [Epoch AI](https://epoch.ai/benchmarks) (CC-BY 4.0).

## Source

- Upstream docs: https://docs.x.ai/developers/models/grok-build-0.1