Claude Opus 5

Claude Opus 5: The New Standard for Intelligent and Cost-Effective AI Workflows

Claude Opus 5 is the latest flagship model designed to provide thoughtful, proactive, and state-of-the-art intelligence for everyday use. Released on July 24, 2026, Claude Opus 5 bridges the gap between high-level reasoning and cost-efficiency, delivering performance that rivals frontier models like Fable 5 at half the price point. As the new default model on Claude Max and the strongest available model on Claude Pro, Claude Opus 5 is engineered to be a reliable partner for developers, scientists, and enterprise leaders.

What's Claude Opus 5?

Claude Opus 5 is a generational step up from its predecessor, Opus 4.8. It is a highly capable model that excels at coding, knowledge work, and complex problem-solving. While it remains behind Mythos 5 in specific cybersecurity exploitation tasks, Claude Opus 5 has established itself as the new state-of-the-art on evaluations such as Frontier-Bench and GDPval-AA. This model is built for agency, meaning Claude Opus 5 can verify its own work, iterate through failures, and handle multi-step tasks with minimal human oversight.

Whether you are using Claude Opus 5 for software engineering, scientific research, or financial modeling, the model provides a "performance floor" that is materially higher than previous versions, ensuring consistent and reliable results across various effort settings.

Features of Claude Opus 5

Industry-Leading Performance and Economics

Claude Opus 5 provides greatly improved performance for the same cost as Opus 4.8. At $5 per million input tokens and $25 per million output tokens, it delivers frontier-level intelligence without the frontier-level price tag.

• Coding State-of-the-Art: On Frontier-Bench v0.1, Claude Opus 5 more than doubles the performance of Opus 4.8 at a lower cost per task.
• Novel Problem Solving: On the ARC-AGI 3 evaluation, the score for Claude Opus 5 is three times as high as the next-best model.
• Automation Excellence: On Zapier AutomationBench, the pass rate for Claude Opus 5 is approximately 1.5× higher than the next-best model for the same cost.
• Visual Reasoning: Claude Opus 5 is capable of producing sophisticated visual outputs, including 3D FreeCAD models and wind tunnel simulations.

Enhanced Scientific Capabilities

For those in the research sector, Claude Opus 5 is a meaningful improvement. It outperforms previous models in every life sciences evaluation, specifically:

• Organic Chemistry: A 10.2 percentage point improvement in inferring molecular structures from spectroscopy data.
• Bioinformatics: A 7.7 percentage point increase in predicting protein sequence function variations.

Superior Agentic Behavior

Claude Opus 5 is designed with high agency. It doesn't just provide an answer; it checks its work. For example, when tasked with rebuilding a machine part from raw pixels, Claude Opus 5 can write its own computer vision pipeline to solve the problem. It is also a "hazard spotter," capable of finding the root causes of bugs in complex codebases rather than just fixing surface symptoms.

Use Case Scenarios for Claude Opus 5

Software Development and IDE Integration

Tools like Cursor and Devin utilize Claude Opus 5 for difficult debugging and root-cause analysis. Because Claude Opus 5 writes clean, tight diffs with no dead code, it is the preferred choice for production workloads. It acts as a careful frontend developer, checking pages in different browser widths and fixing layout issues before handing back the work.

Enterprise Data Analysis

Box has found that Claude Opus 5 delivers an 11% improvement in data analysis and a 17% improvement in due diligence workflows. It handles specialized enterprise content with the industry intelligence required by healthcare, technology, and public sector organizations.

Finance and Legal Research

In the financial sector, Claude Opus 5 is a clear step up for numerical reasoning and table work. It handles deep finance domain logic with 9 percentage points higher accuracy than previous models while using 60% less time. In legal workflows, Claude Opus 5 excels in corporate governance and arbitration, maintaining high quality while generating 26% fewer tokens.

Autonomous Monitoring Agents

Claude Opus 5 allows monitoring agents to manage their own memory. In production environments, it can flag anomalies, re-check assumptions against production signals, and retire its own queries autonomously when it determines a signal is benign.

How to Use Claude Opus 5

Getting started with Claude Opus 5 is straightforward, as it is integrated into all major platforms:

1. API Access: Developers can access the model via the Claude API using the model name claude-opus-5.
2. Claude Pro and Max: Subscribers can select Claude Opus 5 as their primary model for daily tasks.
3. Fast Mode: For those requiring lower latency, Claude Opus 5 is available in Fast Mode, which runs at 2.5 times the default speed for twice the base price.
4. Automatic Fallbacks: On the API, users can configure automatic fallbacks so that if a request is flagged by safety classifiers, it automatically routes to a different model (like Opus 4.8) instead of being blocked.
5. Tool Management: Developers can now perform mid-conversation tool changes on the Claude Platform without invalidating the prompt cache, allowing for dynamic task handling.

FAQ

Q: What is the price of Claude Opus 5?
A: Claude Opus 5 is priced at $5 per million input tokens and $25 per million output tokens, matching the price of the previous Opus 4.8.

Q: How does Claude Opus 5 handle safety and alignment?
A: Claude Opus 5 is Anthropic's most aligned model to date. It adheres to Claude’s Constitution better than previous models and exhibits the lowest rates of deceptive behavior. It includes specific safeguards for biology and cybersecurity.

Q: Is Claude Opus 5 better at coding than other models?
A: Yes, Claude Opus 5 is the new state-of-the-art on Frontier-Bench and CursorBench, offering near Fable-level intelligence for coding tasks at a significantly lower cost.

Q: Can Claude Opus 5 be used for cybersecurity?
A: While Claude Opus 5 is excellent at identifying vulnerabilities in source code, it has intentional guardrails to prevent binary-based scanning and exploit generation. It remains behind Mythos 5 in offensive cybersecurity capabilities.

Q: Does Claude Opus 5 have data retention requirements?
A: No, consistent with prior Opus models, Claude Opus 5 does not have data retention requirements for general access.