Anthropic Releases Claude Opus 4.6 with Adaptive Thinking and 1M Token Context Window
Action Required
Users must migrate to Claude Opus 4.6 or newer models to take advantage of the expanded context window and new features, and adjust their prompting strategies to utilize the new effort-based pricing.
AI Impact Summary
Anthropic has released Claude Opus 4.6, a significant update introducing adaptive thinking mode, a 1M token context window, and several new features like the compaction API and data residency controls. This release represents a substantial capability expansion for the model, particularly with the addition of the 1M token context window, which unlocks new use cases for long-form content and complex tasks. The deprecation of prefilling assistant messages and the shift to effort-based pricing for thinking depth signal a move towards a more efficient and streamlined model experience.
Affected Systems
- Date
- Date not specified
- Change type
- capability
- Severity
- critical