Understand this story
Story summary
The English summary is being updated. See the reporting timeline below.
Latest development · Report
Anthropic releases Sonnet 4.5, calling it its most aligned frontier model to dateDevelopments
1 confirmed developments
- Source:Jan Leike
Reports and discussion timeline
Browse reports and discussion by time. Their evidence levels remain distinct.
Sep 30
Jan LeikeSelected
Anthropic releases Sonnet 4.5, calling it its most aligned frontier model to date
Anthropic releases Sonnet 4.5, calling it its most aligned frontier model to date, with substantial progress compared to Sonnet 4 and Opus 4.1. The news was posted by Anthropic alignment team member Jan Leike.