AsOf

product

Claude Opus 4.1

Incremental update to Claude Opus 4. 3 claims on record, 3 currently valid, 0 superseded, plus 1 post. Last change 2026-08-05.

See the record on another date

State as of 2026-11-04

1 asserted claim
factvalue
predecessorClaude Opus 4
2025-08-05 · conf 0.95primary, 1 source for predecessor

Latest

3 dated events · full timeline →
2026-08-05 · retired
claude-opus-4-1-202508051 src
valid
2026-06-05 · deprecated
claude-opus-4-1-202508051 src
valid
2025-08-05 · model release
Claude Opus 4.11 src
valid

State changes since 2026-05-08

0 changes · superseded claims stay visible

No changes since 2026-05-08.