LLMAPI only
Grok 4.1
xAI
Updated May 21, 2026 · Benchmarks via Artificial Analysis, specs & pricing via OpenRouter · Methodology · Report an error
Superseded by Grok 4.20
Specifications
- Type
- LLM
- Access
- API only
- Released
- November 17, 2025
- License
- Proprietary
- Context window
- 256,000 tokens
- Input
- Text, Image
- Output
- Text
Our take
Tuned for emotional intelligence, style, and lower hallucinations rather than raw reasoning; topped LMArena’s text leaderboard at release.