HighDeprecation
Claude Sonnet 4 and Claude Opus 4 deprecated; retire by 2026-06-15; migrate to Claude Sonnet 4.6
Action Required
Applications using Claude Sonnet 4 or Claude Opus 4 must migrate to Claude Sonnet 4.6 before 2026-06-15 to avoid call failures.
AI Impact Summary
Claude Sonnet 4 and Claude Opus 4 are deprecated, with retirement scheduled for 2026-06-15. Teams should migrate active workloads to Claude Sonnet 4.6 ahead of the deadline to avoid service disruption, and verify compatibility of prompts, parameters, and response schemas against 4.6. Plan validation and rollout in staging, then production, to ensure downstream systems relying on Sonnet 4/Opus 4 continue functioning after retirement.
Claude Sonnet 4 and Claude Opus 4 deprecated; retire by 2026-06-15; migrate to Claude Sonnet 4.6
Affected Systems
Claude Sonnet 4
- Date
- Date not specified
- Change type
- deprecation
- Severity
- high