Pyyan / Language Models / Claude Opus 4.5

Claude Opus 4.5

Legacy Opus, still callable.

deprecatedAnthropic ↗Verified 2026-08-13

Legacy

still active

Specifications

Licence	Proprietarysource · as of 2026-08-13
Model ID	claude-opus-4-5source · as of 2026-08-13

Official links

Claude Opus 4.5 model page Anthropic official site

Compare with

All 5 side by side →

Claude Opus 4.5 vs Claude Fable 5 →Claude Opus 4.5 vs Claude Opus 5 →Claude Opus 4.5 vs GPT-5.6 Sol →Claude Opus 4.5 vs Gemini 3.1 Pro →Claude Opus 4.5 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