MultimodalAPI only
Grok-4 Heavy
xAI
Updated May 21, 2026 · Benchmarks via Artificial Analysis, specs & pricing via OpenRouter · Methodology · Report an error
Specifications
- Type
- Multimodal
- Access
- API only
- Released
- July 9, 2025
- License
- proprietary
- Knowledge cutoff
- December 31, 2024