ReleasedFeb 17, 2026 ·
Claude Sonnet 4.6 is out
Anthropic shipped Claude Sonnet 4.6.
AnthropicAnthropic released Claude Sonnet 4.6 on Feb 17, 2026. The company announced it itself (Anthropic).
It follows Claude Sonnet 4.5, 141 days earlier. Releases in the Claude Sonnet line usually land about 130 days apart.
Claude Sonnet 5 replaced it on Jun 30, 2026.
“Introducing Claude Sonnet 4.6”
Released
Feb 17, 2026
Line
Claude Sonnet
Previous
Claude Sonnet 4.5 (Sep 29, 2025)
Confirmed by
The company's own announcement
Source: Anthropic