HighDeprecation
Claude Sonnet 4 and Claude Opus 4 retirement set for 2026-06-15 — migrate to Sonnet 4.6 or Opus 4.6
Action Required
Applications calling Claude Sonnet 4 or Claude Opus 4 must migrate to Sonnet 4.6 or Opus 4.6 before 2026-06-15 to avoid service disruption.
AI Impact Summary
Claude Sonnet 4 and Claude Opus 4 are scheduled for retirement on 2026-06-15. After that date, integrations calling these models will fail unless migrated to Claude Sonnet 4.6 or Claude Opus 4.6. Teams should inventory production endpoints using Sonnet 4/Opus 4, update clients to target the 4.6 models, and run end-to-end tests to catch differences in prompts, token usage, or latency; plan a migration window and monitor model-id mappings and feature changes.
Claude Sonnet 4 and Claude Opus 4 retirement set for 2026-06-15 — migrate to Sonnet 4.6 or Opus 4.6
Affected Systems
Claude Sonnet 4
- Date
- Date not specified
- Change type
- deprecation
- Severity
- high