Claude Sonnet 5.5

Release date

September 28, 2026

Lab

Anthropic

Country

United States

Parameters

Undisclosed

Token price

★★★☆☆input: $2/1M, output: $10/1M

Same lab

• Claude Fable 5.1
• Claude Opus 5
• Claude Opus 4.8
• Claude Opus 4.7
• Claude Opus 4.6
• Claude Opus 5.5
• Claude Sonnet 4.6
• Claude Sonnet 5
• Claude Haiku 4.5
• Claude Haiku 5.5