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Anthropic

Available in Shortly AI

Claude Opus 4.5

Released November 24, 2025

ReasoningVision (Image)Tool Use

Claude Opus 4.5 is Anthropic’s latest model in the Opus series, meant for demanding reasoning tasks and complex problem solving. This model has improvements in general intelligence and vision compared to previous iterations. In addition, it is suited for difficult coding tasks and agentic workflows, especially those with computer use and tool use, and can effectively handle context usage and external memory files.

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Context window
200K tokens
Maximum output
64K tokens
Input pricing
$5.00/M
Output pricing
$25.00/M

Independent benchmark

LiveBench performance

72.6overall

Benchmark data from LiveBench, release 2026-06-25. Scores are pinned and are not fetched on page load.

Claude Opus 4.5 LiveBench category scores
CategoryScore
Reasoning80.087
Coding79.654
Agentic Coding39.697
Mathematics90.389
Data Analysis74.442
Language81.261
Instruction Following62.546

Benchmarks measure selected evaluation tasks and do not guarantee performance for every prompt or workflow.

FAQ

Similar AI models

Claude Opus 5AnthropicClaude Opus 5 is the latest model in Anthropic's Opus family and a step-change improvement over Opus 4.8. It delivers major gains over Opus 4.8 in agentic coding, professional knowledge work, and long-horizon reasoning, and it is stronger per token across effort levels.Claude Fable 5AnthropicClaude Fable 5 is a Mythos-class model with robust safeguards. It can handle long-running, complex, and asynchronous tasks where previous models would have needed more frequent check-ins.Claude Opus 4.8AnthropicOpus 4.8 is a focused upgrade to Opus 4.7 and is Anthropic's best generally available model for coding, agentic tasks, and enterprise workflows. It builds on the strengths of previous Opus models with stronger performance on complex, multi-step coding tasks. Anthropic recommends using it on long-horizon coding and agentic tasks. It is also stronger on professional work, including document drafting, data analysis, and presentations.

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