HighDeprecation
Claude Sonnet 4 and Claude Opus 4 deprecated; Claude API 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 API access failures.
AI Impact Summary
Claude Sonnet 4 (claude-sonnet-4-20250514) and Claude Opus 4 (claude-opus-4-20250514) are being deprecated ahead of a planned retirement. The Claude API will remove access to these models on June 15, 2026, so downstream apps must switch to Claude Sonnet 4.6 before then. Migration will require updating client libraries and endpoints, and validating prompts against Sonnet 4.6 to ensure consistent behavior and cost profiles.
Claude Sonnet 4 and Claude Opus 4 deprecated; Claude API retirement on June 15, 2026; migrate to Claude Sonnet 4.6
Affected Systems
Claude Sonnet 4
- Date
- Date not specified
- Change type
- deprecation
- Severity
- high