Sonnet 4.5
validasserted
- Valid from
- 2025-09-29
- Valid until
- still holds
- Published
- 2025-09-29
- Recorded by AsOf
- 2026-10-31
- Checked
- 2026-10-31 · its source page states the value and the date
- Confidence
- 0.70
Sources
“September 29, 2025 Claude Sonnet 4.5 launch We released our newest model, Sonnet 4.5.”— what the page says, read 2026-10-31
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