HighDeprecation
Deprecation of Claude Sonnet 4 and Claude Opus 4; retirement June 15, 2026 — migrate to 4.6
Action Required
Applications using claude-sonnet-4-20250514 or claude-opus-4-20250514 must migrate to Claude Sonnet 4.6 or Claude Opus 4.6 by 2026-06-15 to avoid service disruption.
AI Impact Summary
Claude Sonnet 4 (claude-sonnet-4-20250514) and Claude Opus 4 (claude-opus-4-20250514) are deprecated with retirement scheduled for 2026-06-15. Applications using these specific model IDs should plan migration to Claude Sonnet 4.6 or Claude Opus 4.6 to maintain functionality and feature parity. Update tooling to reference the 4.6 endpoints, run parallel tests to compare outputs, and adjust prompts and tokenization considerations as needed to ensure a smooth transition before the retirement date.
Deprecation of Claude Sonnet 4 and Claude Opus 4; retirement June 15, 2026 — migrate to 4.6
Affected Systems
Claude Sonnet 4 (claude-sonnet-4-20250514)
- Date
- Date not specified
- Change type
- deprecation
- Severity
- high