Claude · default modelClaude Sonnet 4

Superseded: a later claim replaced it. It was the record's answer for the dates it held.

Valid from

2025-05-22

Valid until

2025-09-29

Published

2025-05-22

Recorded by AsOf

2026-11-04

Checked

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

Confidence

0.95

Replaced by

Claude Sonnet 4.6

Sources

“Pro, Max, Team, and Enterprise Claude plans include both models and extended thinking, with Sonnet 4 also available to free users.”— what the page says, read 2026-11-04

• Introducing Claude 4primary · anthropic.com · 2025-05-22
• https://support.claude.com/en/articles/12138966-release-notesprimary · support.claude.com

Supersedes

• Claude 3.7 Sonnet2025-02-24 to 2025-05-22 · clm_328D98B8AB9E

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