Anthropic Introduces Claude Opus 5.5, Sonnet 5.5 and Haiku 5.5 Models
Anthropic has introduced three Claude 5.5 models: Opus 5.5, Sonnet 5.5 and Haiku 5.5, with release dates ranging from September 22 to October 7, 2026.
Checked against 1 sourceAnthropic
