You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
Claude Sonnet 5.5 is built for fast, well-defined everyday work, including bug fixes, feature development, documentation, presentations, and spreadsheets.
reacted with thumbs up emoji reacted with thumbs down emoji reacted with laugh emoji reacted with hooray emoji reacted with confused emoji reacted with heart emoji reacted with rocket emoji reacted with eyes emoji
CometAPI
Uh oh!
There was an error while loading. Please reload this page.
View model details
2026-09-29
Claude Sonnet 5.5 Now Available on CometAPI
Model ID:
claude-sonnet-5-5Claude Sonnet 5.5 is built for fast, well-defined everyday work, including bug fixes, feature development, documentation, presentations, and spreadsheets.
Supported Endpoints
Chat API
Anthropic Messages API
All reactions