Claude Sonnet 4.5 · deprecatedclaude-sonnet-4-5-20250929

Valid from

2026-09-30

Valid until

still holds

Published

no source on record carries a date

Recorded by AsOf

2026-11-04

Checked

2026-11-04 · its source page states the value and the date

Confidence

0.95

Sources

“claude-sonnet-4-5-20250929 Deprecated September 30, 2026 November 30, 2026”— what the page says, read 2026-11-04

• https://platform.claude.com/docs/en/about-claude/model-deprecationsprimary · platform.claude.com

/claim/clm_CDD27AF61D3F.md/v1/claims/clm_CDD27AF61D3Ftimelinesubmit a correction