Grok 4.20
by xAI
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 promp
Models
Grok 4.20
Added 10 July 2026
Overview
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...
How to use / API access
Call via OpenRouter with model id `x-ai/grok-4.20`.
- openrouter ·
x-ai/grok-4.20Docs
OpenRouter id: x-ai/grok-4.20
Benchmarks
- Intelligence Index (artificial-analysis): 25.7 index
- Design Arena androidnative (other): 1060 elo · #35
- Design Arena fullstack (other): 1054 elo · #34
- Design Arena godotgamedev (other): 1089 elo · #31
- Design Arena htmlslides (other): 1180 elo · #11
Notes
Grok 4.20 is listed in the EDNA Models directory from the OpenRouter catalogue.
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