Using Grok Code Fast 1 on OpenRouter

Quick Start

1. 1
   Create an account at OpenRouter and generate an API key.
2. 2
   Use the OpenRouter SDK or REST API to call x-ai/grok-code-fast-1 — see the documentation for request format.
3. 3
   You'll be billed $0.20/1M input, $1.50/1M output tokens. See full pricing.

Code Examples

About OpenRouter

OpenRouter provides a unified interface for Large Language Models with better pricing, improved uptime, and no subscription requirements. Route across providers for cost optimization and reliability.

OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.

Pricing on OpenRouter

Capabilities

About Grok Code Fast 1

xAI's Grok Code Fast 1 is a code-specialized Mixture-of-Experts model released August 27, 2025. It was retired on May 15, 2026; xAI lists grok-build-0.1 as its direct replacement for current coding-agent work.