Model Overview
xAI · Active Model
- Long-Context
- API Available
- Production Ready
Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
- Developer
- xAI
- Release Date
- March 31, 2026
- Context Window
- 2,000,000 tokens≈ 2,667 words
- API Access
- Publicly AvailableIntegrate via official API
- Input Cost
- $1.25per million tokens
- Output Cost
- $2.50per million tokens