# xAI: Grok 4.5: AI model fact sheet

- **Provider:** xai
- **Released:** 2026-07-08
- **Context window:** 500,000 tokens
- **API pricing:** $2.00 / 1M input, $6.00 / 1M output
- **OpenRouter ID:** x-ai/grok-4.5
- **Capabilities:** conversation, reasoning, code-generation, analysis

Grok 4.5 is xAI's smartest model, delivering frontier performance on coding, knowledge work, and STEM. It ships with a 500k-token context window and multimodal text and image inputs, with reasoning enabled via the API.

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/grok-4.5