Pyyan / Language Models / Claude Opus 4.1

Claude Opus 4.1

Retires 5 August 2026 — migrate now.

deprecatedAnthropic ↗Verified 2026-08-13

5 Aug

retirement 2026

Specifications

Licence	Proprietarysource · as of 2026-08-13
Model ID	claude-opus-4-1source · as of 2026-08-13

Official links

Claude Opus 4.1 model page Anthropic official site

Compare with

All 5 side by side →

Claude Opus 4.1 vs Claude Fable 5 →Claude Opus 4.1 vs Claude Opus 5 →Claude Opus 4.1 vs GPT-5.6 Sol →Claude Opus 4.1 vs Gemini 3.1 Pro →Claude Opus 4.1 vs Claude Sonnet 5 →

Also in Language Models

Claude Fable 5 · Anthropic Claude Opus 5 · Anthropic GPT-5.6 Sol · OpenAI Gemini 3.1 Pro · Google Claude Sonnet 5 · Anthropic