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Anthropic
Released November 2025
Claude Opus 4.5
Frontier reasoning, software engineering, computer use
Tool Use
Vision
About this model
Claude Opus 4.5 is optimized for complex software engineering, agentic workflows, and long-horizon computer use with competitive performance across coding and reasoning benchmarks. The model features improved robustness to prompt injection and operates efficiently across varied effort levels, allowing developers to trade off speed, depth, and token usage depending on task requirements. It includes a verbosity parameter for controlling token efficiency and supports advanced tool use, extended context management, and multi-agent setups.
Context Window
200K
Input Cost
$5/M
Output Cost
$25/M
Input Types
Text, Image