Grok 4.20

xai/grok-4.20

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...

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Context window: 2M
Input: Document · Image · Text
Output: Text
Released: 2026-03-31

Max output: 1.8M
Knowledge cutoff: 2025-09-01
Weights: Closed
Capabilities: Reasoning, Structured, Temperature, Tool call

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Performance

Overall capability

42.8/100

Coding: —
Reasoning: 43.1
Professional work: —
Knowledge & language: 37.7


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ModelRegistry · Catalog updated 2026-11-05