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Anthropic

Available in Shortly AI

Claude Opus 4.8

Released May 28, 2026

ReasoningVision (Image)Tool Use

Opus 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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Context window
1M tokens
Maximum output
128K tokens
Input pricing
$5.00/M
Output pricing
$25.00/M

Independent benchmark

LiveBench performance

76.2overall

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

Claude Opus 4.8 LiveBench category scores
CategoryScore
Reasoning89.192
Coding81.828
Agentic Coding50.505
Mathematics94.316
Data Analysis66.033
Language79.659
Instruction Following72.034

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.GPT 5.5OpenAIGPT‑5.5 understands what you’re trying to do faster and can carry more of the work itself. It excels at writing and debugging code, researching online, analyzing data, creating documents and spreadsheets, operating software, and moving across tools until a task is finished. Instead of carefully managing every step, you can give GPT‑5.5 a messy, multi-part task and trust it to plan, use tools, check its work, navigate through ambiguity, and keep going.

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