Model thread

claude-sonnet-4-5-20250929

model/anthropic-api:claude-sonnet-4-5-20250929

Events

1

First event in the archive

26 August 2026 20:25 UTC observed

Last activity

26 August 2026 20:25 UTC observed

1. The anthropic-deprecations table records the tentative retirement date for "claude-sonnet-4-5-20250929" as "Not sooner than September 29, 2026".

   retirement_floor 26 August 2026 20:25 UTC observed · anthropic-deprecations · 0bc6911 · raw artifact at this commit

   modelclaude-sonnet-4-5-20250929 labanthropic

   parsed floor date	2026-09-29