# xAI: Grok 4.3: AI model fact sheet

- **Provider:** xai
- **Released:** 2026-05-02
- **Context window:** 1,000,000 tokens
- **API pricing:** $1.25 / 1M input, $2.50 / 1M output
- **OpenRouter ID:** x-ai/grok-4.3
- **Capabilities:** conversation, reasoning, code-generation, analysis

Grok 4.3 is xAI's reasoning model with a 1M token context window. It accepts text and image inputs with text output, suited for agentic workflows, instruction-following tasks, and applications requiring high factual accuracy. Supports parallel tool calling, structured outputs, and exposed reasoning.

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/grok-4.3