Claude Haiku 3 retirement requires upgrade to Claude Haiku 4.5
Action Required
Applications using Claude Haiku 3 will return errors after retirement unless migrated to Claude Haiku 4.5.
AI Impact Summary
Claude Haiku 3 (claude-3-haiku-20240307) has been retired, causing all requests to that model to fail. Clients must switch to Claude Haiku 4.5 to maintain functionality; expect potential differences in prompt handling or token limits that may require code changes and testing. Without migration, automated workflows and user-facing features relying on Claude Haiku 3 will experience immediate disruption.
Affected Systems
- Date
- Date not specified
- Change type
- deprecation
- Severity
- high