CriticalDeprecation
Anthropic deprecating Claude Haiku 3 by April 2026 — migrate to Claude Haiku 4.5
Action Required
Failure to migrate from Claude Haiku 3 by April 19, 2026, will result in a service outage for applications using this model.
AI Impact Summary
Anthropic is deprecating Claude Haiku 3, a smaller, faster model, with a final retirement date of April 19, 2026. This requires immediate migration to Claude Haiku 4.5 to avoid service disruption. The move to Haiku 4.5 is necessary due to the end-of-life for the older model, impacting any applications relying on Haiku 3.
Anthropic deprecating Claude Haiku 3 by April 2026 — migrate to Claude Haiku 4.5
Affected Systems
Claude Haiku 3
- Date
- 19 Apr 2026
- Change type
- deprecation
- Severity
- critical