CriticalDeprecation
Anthropic Deprecating Claude Sonnet 3.5 and 3.7 Models
Action Required
Applications currently using Claude Sonnet 3.5 or 3.7 will no longer function after June 15, 2026, requiring immediate migration to a supported model.
AI Impact Summary
Anthropic is retiring the Claude Sonnet 3.5 and 3.7 models, marking a significant shift in their model offerings. This deprecation requires developers to migrate to newer models like Claude Sonnet 4.6 and Claude Opus 4.7 to avoid service disruptions. The move also introduces changes to pricing and context window limits, necessitating careful planning for applications currently utilizing these older models.
Anthropic Deprecating Claude Sonnet 3.5 and 3.7 Models
Affected Systems
Claude Sonnet 3.5
- Date
- 15 Jun 2026
- Change type
- deprecation
- Severity
- critical