Using Grok 4.3 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-4.3 — see the documentation for request format.
3. 3
   You'll be billed $1.25/1M input, $2.50/1M 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.

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 4.3

xAI's Grok 4.3 is the GA API model that supersedes the Grok 4.3 Beta identifier. It supports native video input processing, document generation workflows, tool use, structured outputs, and Grok Computer integration. xAI's current model metadata lists API ID grok-4.3 with a 1,000,000 token prompt window.