Claude Sonnet 4

Claude Sonnet 4

Developer	Anthropic
Release date	May 22, 2025
Family	Claude
Generation	Claude 4
Level
Context window	200K tokens
Max output	64K tokens
Input	Text, image, file
Output	Text
Knowledge cutoff	2025-03-31
Weights	Closed
Predecessor	Claude Sonnet 3.7
Successor	Claude Sonnet 4.5
Website	anthropic.com
Links	Model card

Part of a series on

Context: 200Ktokens
Released: 1y ago

Specifications

Model

Developer: Anthropic
Family: Claude Claude 4
Type: Language model
Released: May 22, 2025
Model ID: anthropic/claude-sonnet-4-20250514

Capabilities

Input → output: Text, image, file → Text
Max output: 64K tokens
Knowledge cutoff: 2025-03-31

Weights

Openness: Closed

Sources:models.dev

Metadata synced Nov 8, 2026, 7:00 AM UTC

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