Claude Opus 5.5

Name: Claude Opus 5.5
Author: Anthropic

Anthropic🇺🇸 United States

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Context window1000K tokens

Output / 1M tokens$20

Version History

5.5minorSeptember 22, 2026

Opus 5.5 lowers output pricing to $20 per million tokens from $25 and improves inference speed through reduced compute requirements, while also revising response style to prioritize key information and reduce jargon.

Coverage

changelogAnthropic

Anthropic Releases Claude Opus 5.5, Cuts Output Pricing to $20 per Million Tokens

Anthropic released Claude Opus 5.5 on Tuesday, cutting output token pricing to $20 per million tokens from $25 while improving coding and knowledge-work performance. The model arrives as Anthropic CEO Dario Amodei has pledged to slow capability advances to match safety work.

September 22, 2026 · 4:36 PM3 min read

Anthropic Claude Opus 5.5