Version history

Every shipped version of this model. Click a marker to open its release page.

3.74.6Apr '25Jul '25Oct '25Jan '26calendar time

Hollow markers open release pages. Scroll horizontally for older releases; labels stay fixed on the left.

AI Model

Claude Sonnet

byAnthropic

Anthropic's balanced model offering strong performance at a lower cost than Opus.

Latest version:5Rumored

All Versions

Claude Sonnet 5

Rumored
Rumored to be released on February, 2026
Why it's rumored:"Model-style identifier" associated with Vertex / logs and activity in prediction markets.
What to expect:Focus on coding/agentic, and price-performance improvements (e.g. similar to top models but cheaper).

Claude Sonnet 4.6

Released
Released on February 17, 2026

Claude Sonnet 3.7

Released
Released on February 24, 2025