Claude Sonnet 4.5
validasserted
- Valid from
- 2026-09-30
- Valid until
- still holds
- Published
- 2026-09-30
- Recorded by AsOf
- 2026-10-31
- Checked
- 2026-10-31 · its source page states the value and the date
- Confidence
- 0.70
Sources
“We announced the deprecation of the Claude Sonnet 4.5 model ( claude-sonnet-4-5-20250929 ), with retirement on the Claude API scheduled for November 30, 2026.”— what the page says, read 2026-10-31
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