Grok 4.20 (Reasoning)

Grok 4.20 (Reasoning)

Developer	xAI
Release date	March 9, 2026
Family	Grok
Generation	Grok 4.20
Level
Context window	1M tokens
Max output	30K tokens
Input	Text, image, file
Output	Text
Weights	Closed
Website	x.ai
Links	Model card Docs

Part of a series on

Context: 1Mtokens
Released: 8mo ago

Specifications

Model

Developer: xAI
Family: Grok Grok 4.20
Type: Language model
Released: March 9, 2026
Model ID: xai/grok-4.20-0309-reasoning

Capabilities

Input → output: Text, image, file → Text
Max output: 30K tokens

Weights

Openness: Closed

Sources:models.dev

Metadata synced Nov 5, 2026, 7:00 PM UTC

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