xAI: Grok 4.20
- Model ID
- x-ai/grok-4.20
- Canonical slug
- x-ai/grok-4.20-20260309
- Knowledge cutoff
- 2025-09-01
- Created
- 3/31/2026
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...