Claude Sonnet 4

Claude Sonnet 4 significantly enhances the capabilities of its predecessor, Sonnet 3.7, excelling in both coding and reasoning tasks with improved precision and controllability. Achieving state-of-the

Creator: Anthropic
Lifecycle: Active
Context: 200.0K
Max output: 64.0K
Released: May 22, 2025
Status: up

Input: $3.00 / 1M tokens
Output: $15.00 / 1M tokens
Cached read: $0.30 / 1M tokens
Cached write: — / 1M tokens
Batch discount: —%
Source: OpenRouter
Verified: Apr 5, 2026 (High)

Capabilities

Modalities: imagetextfile→text
Capabilities: reasoningimageInputpromptCachingfunctionCalling

Official Links

Intro

https://openrouter.ai/anthropic/claude-sonnet-4

Docs

https://openrouter.ai/anthropic/claude-sonnet-4

Pricing

https://openrouter.ai/models

Benchmark Coverage

Benchmark	Version	Score	Date	Source	Notes

Release History

Release	Alias	Lifecycle	Release Date	Deprecation	Shutdown	Summary
Claude Sonnet 4	anthropic-claude-sonnet-4	Active	May 22, 2025	—	—	Model available via OpenRouter.

Host Coverage

Host	Type	Context	Pricing Note	Differences
OpenRouter	aggregator	200.0K	$3.00/1M in · $15.00/1M out via OpenRouter	—

Migration Guidance

Change Events

Date	Type	Title	Description	Source
May 22, 2025	family_added	Claude Sonnet 4 published	Model made available via OpenRouter.	OpenRouter

Other models from Anthropic

Claude 3 Haiku, Claude 3 Opus, Claude 3.5 Haiku, Claude 3.5 Sonnet, Claude 3.7 Sonnet, Claude 3.7 Sonnet (thinking), Claude Haiku 4.5, Claude Opus 4, Claude Opus 4, Claude Opus 4.1, Claude Opus 4.5, Claude Opus 4.6, Claude Sonnet 4, Claude Sonnet 4.5, Claude Sonnet 4.6