Grok 4.5 by xAI
Grok 4.5 is xAI's high-end model for coding, knowledge work, and STEM, with a 500K-token context and thinking mode. Compare it with GPT-5.5 to see how the two flagships differ on the prompts you actually care about.
Specs
| Context window | 500K tokens |
|---|---|
| Max output | 450K tokens |
| Input modalities | file, image, text |
| Output modalities | text |
| Price (input) | $2.00 / 1M tokens |
| Price (output) | $6.00 / 1M tokens |
| Web search | Yes |
| Vision | Yes |
| Thinking | Yes |
Related models
Last updated 2026-10-31 from the CompareIntel model registry and an OpenRouter spec snapshot dated 2026-10-25. Pricing and context figures follow OpenRouter.