CriticalCapability
Anthropic releases Claude Opus 4.6 with Adaptive Thinking
Action Required
Developers using Claude 3.5 models must migrate to Claude Opus 4.6 to continue utilizing the model's capabilities.
AI Impact Summary
Anthropic has released Claude Opus 4.6, their most capable model for complex agentic tasks and long-horizon work. A key change is the deprecation of manual thinking, replaced by adaptive thinking, and the model no longer supports prefilling assistant messages. Opus 4.6 offers a fast mode in research preview, up to 2.5x faster, and introduces the effort parameter for controlling thinking depth. This release impacts developers who rely on the older Claude 3.5 models, requiring migration to Opus 4.6 to maintain functionality.
Anthropic releases Claude Opus 4.6 with Adaptive Thinking
Affected Systems
Claude Opus 4.6
- Date
- Date not specified
- Change type
- capability
- Severity
- critical