Anthropic launches Claude Sonnet 5.5 as second Claude 5.5 model
Claude Sonnet 5.5 launch
AISummary
Anthropic has launched Claude Sonnet 5.5, the second model in its Claude 5.5 family. The company describes it as a faster, lower-cost complement to Claude Opus 5.5, and points readers to a blog post for more information.
AIWhy it matters
The release note places Sonnet 5.5 beside Opus 5.5 in the Claude 5.5 family, clarifying which model suits speed and cost needs.
Source: Claude Apps Release Notes · support.claude.com