HighDeprecation
Claude Sonnet 4 and Claude Opus 4 deprecated; retirement scheduled for 2026-06-15; migrate to Claude Sonnet 4.6
Action Required
Applications relying on Sonnet 4 or Opus 4 must migrate to Sonnet 4.6 before 2026-06-15 to avoid service disruption.
AI Impact Summary
Claude Sonnet 4 and Claude Opus 4 are deprecated with retirement of the Claude API scheduled for 2026-06-15. After retirement, existing endpoints for these models will become unavailable, requiring migration to Claude Sonnet 4.6. Plan a targeted upgrade window: update client libraries, adjust request payloads if needed, and validate prompts and max-token behavior in Sonnet 4.6 (and Opus 4 compatibility).
Claude Sonnet 4 and Claude Opus 4 deprecated; retirement scheduled for 2026-06-15; migrate to Claude Sonnet 4.6
Affected Systems
Claude Sonnet 4
- Date
- Date not specified
- Change type
- deprecation
- Severity
- high