Claude Haiku 3 Officially Deprecated, Users Must Migrate to Haiku 4.5

Anthropic / Releasebot·low signal

Anthropic deprecated Claude Haiku 3 on April 19, directing all users to migrate to Claude Haiku 4.5. Developers with hardcoded model IDs referencing claude-3-haiku will need to update their integrations. This continues Anthropic's aggressive deprecation cadence as it consolidates around the Claude 4.x model family.