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Claude Opus 4.6

AnthropicASL-3
Claude Opus 4.6 was released February 5, 2026. Introduced adaptive thinking with four effort levels, agent teams for splitting tasks, and 1M-token context window (beta). Scored 68.8% on ARC-AGI-2 (83% improvement over Opus 4.5), 65.4% on Terminal-Bench 2.0, and 72.7% on OSWorld. Priced at \$5/\$25 per million tokens.
Developer
Anthropic
Released
2026-02-05
Context Window
1M tokens
Safety Level
ASL-3

Modality

text, image

Capabilities5

tool-useextended-thinkingagentic-codingadaptive-thinkingagent-teams