Model releaseLimited global significanceConfirmed confidence
Anthropic releases Claude 3.7 Sonnet
Anthropic releases an upgrade that can switch between standard responses and extended reasoning mode.
What happened
Event details
Anthropic released Claude 3.7 Sonnet on February 24, 2025. The entry records the parameter count as unknown, classifies the closed model as an autoregressive Transformer and cites the Claude 3.7 Sonnet and Claude Code announcement as its primary source.
Assessment
Why it matters
A published model record with a documented capability or availability change.
45/100Global significance score. Regional effects are recorded only when the evidence supports a meaningful difference.
Availability
Access notes
Available through Anthropic's product and API access channels.