Claude Sonnet 4.6 — High-Performance Reasoning Without Flagship Cost

Claude Sonnet 4.6 introduces advanced reasoning, coding, and agentic workflows while maintaining exceptional reliability. Real edge appears in knowledge work capabilities at lower cost.

Trusted by users from 10,000+ companies

Benchmark Performance Speaks for Itself

Claude Sonnet 4.6 competes with top models, often beating them, in important benchmarks. Performance-to-cost ratio is among some of the best AI models.

Engineering Excellence

Engineering Excellence

Achieving a massive 79.6% on SWE-bench Verified (and up to 80.2% with optimized prompting), Sonnet 4.6 demonstrates elite software engineering capabilities, solving real-world GitHub issues with deeper reasoning.

PhD-Level Reasoning

PhD-Level Reasoning

With a score of 89.9% on GPQA Diamond, the model exhibits graduate-level expertise in the sciences, proving its ability to answer extremely challenging questions where even human experts often struggle.

Autonomous Mastery

Autonomous Mastery

In the domain of computer use, Sonnet 4.6 scores 72.5% on OSWorld-Verified, effectively matching the state-of-the-art Claude Opus 4.6 and showcasing its ability to navigate and operate computer interfaces just like a human user.

Office Suite & Financial Automation

Streamline your corporate workflows with "Real-World Finance" capabilities that can research data and generate polished spreadsheets, slide decks, and Word documents. This model can synthesize raw data into structural deliverables.

Office Suite & Financial Automation

Deep Research & Synthesis

Leverage state-of-the-art "DeepSearchQA" capabilities to conduct multi-step web research that compiles answers from reference materials. Sonnet 4.6 navigates the web to surface specific facts and synthesize them into comprehensive reports.

Deep Research & Synthesis

Next-Gen Software Development

Utilize the model's adaptive thinking to autonomously explore codebases, write tests, and fix bugs with a high degree of verification and safety. Developers can offload complex engineering tickets on the model to understand root causes.

Next-Gen Software Development

A Balanced Model Designed for Power, Safety, and Scale

Claude Sonnet 4.6 is packed with advanced features designed to handle the most demanding technical and creative challenges.

Extended Thinking

Extended Thinking

Allows the model to spend more compute time reasoning through complex tasks before responding, providing performance boost.

Computer Use

Computer Use

Enables the model to interact directly with computer GUIs (mouse and keyboard) to navigate websites and applications autonomously.

Multilingual Proficiency

Multilingual Proficiency

Delivers strong performance across high and mid-resource languages, due to MMMLU benchmark excellence.

Advanced Coding

Advanced Coding

Capable of solving complex software engineering tasks with a 79.6% success rate on real-world repositories.

Visual Analysis

Visual Analysis

Outperforms previous models in understanding scientific charts and figures, scoring 77.4% on CharXiv Reasoning with cropping tools.

Long Context Window

Long Context Window

Handles massive amounts of information with ease, maintaining 90.3% retrieval accuracy even in 256k token contexts.

Math & Logic

Math & Logic

Solves prestigious high school mathematics competition problems with a 95.6% accuracy on AIME 2025.

Financial Agent

Financial Agent

Specializes in researching SEC filings and financial data, achieving state-of-the-art accuracy in information retrieval for analysts.

Robust Safety

Robust Safety

Released under ASL-3 standards, it features industry-leading resistance to jailbreaks and prompt injections while minimizing refusals.

Frequently Asked Questions

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