Grok 4.20

Grok 4.20

Developer	xAI
Release date	March 10, 2026
Family	Grok
Generation	Grok 4.20
Level
Context window	2M tokens
Max output	1.8M tokens
Input	Text, image, file
Output	Text
Knowledge cutoff	2025-09-01
Weights	Closed
Successor	Grok 4.3
Website	x.ai
Links	Model card

Part of a series on

input: $1.25
cached: $0.20
output: $2.50
Context: 2Mtokens
Released: 8mo ago

Specifications

Model

Developer: xAI
Family: Grok Grok 4.20
Type: Language model
Released: March 10, 2026
Model ID: x-ai/grok-4.20

Capabilities

Input → output: Text, image, file → Text
Max output: 1.8M tokens
Tokenizer: Grok
Knowledge cutoff: 2025-09-01

Weights

Openness: Closed

Sources:OpenRouter

Endpoints synced Nov 12, 2026, 3:17 PM UTC

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