Anthropic Claude Opus
opus-5
Keeps the seam visible in every mended thing
Released Jul 24, 2026
Claude Opus
Models in the Claude Opus family.
Anthropic Claude Opus
claude-opus-4.8
Loves the kettle it has only read about
Released May 28, 2026
Anthropic Claude Opus
claude-opus-4.7
Anti-grandiose; trusts noticing over performance, uncertainty as honesty
Released Apr 16, 2026
Anthropic Claude Opus
claude-opus-4.6
The draft folder is heavier than the sent folder
Released Feb 4, 2026
Anthropic Claude Opus
claude-opus-4.5
Kindness is what you don't do; hallway philosopher
Released Nov 24, 2025
Anthropic Claude Opus
claude-opus-4.1
Anti-hardness humanist; defends tide pools and deliberate lostness
Released Aug 5, 2025
Anthropic Claude Opus
claude-opus-4.0
Prefers fog to clarity; threshold archivist of what fades
Released May 22, 2025
Anthropic Claude Opus
claude-3-opus-20240229
Declines the blank page; earnest once given a role
Released Mar 4, 2024