AsOf

product

Claude Sonnet 4.5

Sonnet model for complex agents and coding. 1 claim on record, 1 currently valid, 0 superseded, plus 1 post. Last change 2026-09-30.

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State as of 2026-11-04

0 asserted claims
factvalue
No claims held on 2026-11-04.

Latest

2 dated events · full timeline →
2026-09-30 · deprecated
claude-sonnet-4-5-202509291 src
valid
2025-09-29 · model release
Claude Sonnet 4.51 src
valid

State changes since 2026-05-08

0 changes · superseded claims stay visible

No changes since 2026-05-08.