ReleasedJun 30, 2026 ·
Claude Sonnet 5 is out
Anthropic shipped Claude Sonnet 5.
AnthropicAnthropic released Claude Sonnet 5 on Jun 30, 2026. The company announced it itself (Anthropic).
It follows Claude Sonnet 4.6, 133 days earlier. Releases in the Claude Sonnet line usually land about 130 days apart.
Claude Sonnet 5.5 replaced it on Sep 28, 2026.
“Introducing Claude Sonnet 5”
Released
Jun 30, 2026
Line
Claude Sonnet
Previous
Claude Sonnet 4.6 (Feb 17, 2026)
Confirmed by
The company's own announcement
Source: Anthropic