# Claude Opus 5: A New Milestone in AI

Claude Opus 5 stands out with its performance and cost efficiency.

- **Source:** [Hacker News (news.ycombinator.com)](https://brifing.si/source/13c923cd-6d99-442b-9b8b-1181f4d8cd91)
- **Published:** 2026-07-24
- **Topic:** [Data & AI](https://brifing.si/c/data-ai)
- **Original article:** <https://www.anthropic.com/news/claude-opus-5>
- **On Brifing:** https://brifing.si/s/539f7dc3-b4f3-471e-80a7-bd928055e887

## Claude Opus 5 Launched

Claude Opus 5 is a new AI model released today. It offers superior performance at a lower cost compared to previous versions. It excels particularly in software engineering and knowledge work tasks.

## Performance and Cost

Opus 5 provides much better performance than its predecessor, Opus 4.8, at the same cost. Users can optimize the model's effort settings to achieve smarter results or faster and cheaper solutions.

## Superiority in Software Engineering

In evaluations like Frontier-Bench v0.1, Opus 5 surpasses all other models. It doubles the performance of Opus 4.8 while keeping the cost per task lower.

## Success in Knowledge Work Tasks

In innovative problem-solving evaluations like ARC-AGI 3, Opus 5 scores three times higher than the next best model. This demonstrates the model's capability in complex tasks.

## Leader in Business Automation

On Zapier AutomationBench, Opus 5 achieves a pass rate 1.5 times higher than the next best model at the same cost per task. This proves Opus 5's leadership in business automation.

## Pioneer in Computer Use

In the OSWorld 2.0 computer use benchmark, Opus 5 outperforms all other models at any given cost. It surpasses Fable 5's best result at just over a third of the cost.

## Advancement in Scientific Research

Opus 5 shows better performance than Opus 4.8 in life sciences evaluations. It makes notable progress in organic chemistry and protein-related tasks.

## Strong in Visual Outputs

Opus 5 also makes significant progress in producing visual outputs. This demonstrates the model's versatility and capabilities in different fields.

## User Experiences

Early access users report that Opus 5 is very strong in verifying its tasks and iterating carefully. This enhances the model's reliability and effectiveness.

## Ideal for Developers

Claude Opus 5 has become an important tool for developers. It shows strong performance particularly in difficult debugging and root cause analysis tasks.

## Consistency and Reliability

Opus 5 leads its family in internal evaluations. It performs better in tough coding tasks while reducing variance between runs.

## The Future of Claude Opus 5

Claude Opus 5 represents the biggest leap in the Opus family since 4.5. It offers a definite advantage over Opus 4.8, especially in open-ended analytical work.

## Sources covering this story

- https://www.anthropic.com/news/claude-opus-5 — 

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_Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._