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Anthropic
Released May 2026
Claude Opus 4.8
Most capable Opus: autonomous agents, long-horizon work
Reasoning
Tool Use
Vision
About this model
Claude Opus 4.8 is Anthropic's most capable model in the Opus family, built for highly autonomous agents, long-horizon agentic work, knowledge work, and memory-driven tasks. It excels at multi-step reasoning, complex coding, and project orchestration while maintaining quality and coherence across extended outputs and sustained sessions.
Context Window
1M
Input Cost
$5/M
Output Cost
$25/M
Input Types
Text, Image