HighDeprecation
Anthropic retiring Claude Sonnet 4 and Opus 4 by June 2026 — migrate to Sonnet 4.6
Action Required
Any production application using claude-sonnet-4-20250514 or claude-opus-4-20250514 will break on June 15, 2026 unless migrated to a supported model version.
AI Impact Summary
Anthropic is retiring two Claude model versions with a June 15, 2026 deadline: claude-sonnet-4-20250514 and claude-opus-4-20250514. Applications calling these specific model endpoints will fail after the cutoff date. Claude Sonnet 4.6 is positioned as the successor, though the guidance does not specify whether Opus 4 users should migrate to Sonnet 4.6 or if a separate Opus replacement exists, creating potential ambiguity for teams using Opus for higher-capability workloads.
Anthropic retiring Claude Sonnet 4 and Opus 4 by June 2026 — migrate to Sonnet 4.6
Affected Systems
Claude Sonnet 4
- Date
- Date not specified
- Change type
- deprecation
- Severity
- high