HighDeprecation
Claude 1M-context beta retired; migrate to Sonnet 4.6 or Opus 4.6 for 1M window
Action Required
Applications relying on the 1M-token window will fail when requests exceed 200k tokens unless migrated to Claude Sonnet 4.6 or Claude Opus 4.6.
AI Impact Summary
The 1M-token context window beta for Claude is retired. Requests exceeding the standard 200k-token window will fail until migrated to Claude Sonnet 4.6 or Claude Opus 4.6, which provide the 1M-context capability as generally available with standard pricing and no beta header. This requires update planning for pipelines built on Claude Sonnet 4.5; route long-context usage to the 4.6 endpoints and validate token usage patterns.
Claude 1M-context beta retired; migrate to Sonnet 4.6 or Opus 4.6 for 1M window
Affected Systems
Claude Sonnet 4.5
- Date
- Date not specified
- Change type
- deprecation
- Severity
- high