HighDeprecation
Claude Sonnet 4 and Claude Opus 4 retirement on June 15, 2026 — 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 June 15, 2026 to avoid service disruption.
AI Impact Summary
Claude Sonnet 4 and Claude Opus 4 are deprecated with a retirement date of June 15, 2026. Any integration calling claude-sonnet-4-20250514 or claude-opus-4-20250514 will be interrupted after retirement unless migrated to Claude Sonnet 4.6. Plan a phased migration: inventory usage, run compatibility tests against Sonnet 4.6, adjust prompts and token limits if needed, update API endpoints, and deploy with monitoring to detect latency or error rate changes before the deadline.
Claude Sonnet 4 and Claude Opus 4 retirement on June 15, 2026 — migrate to Claude Sonnet 4.6
Affected Systems
Claude Sonnet 4 (claude-sonnet-4-20250514)
- Date
- Date not specified
- Change type
- deprecation
- Severity
- high