Claude Sonnet 4.6 is Anthropic’s latest AI model, now the default for Free and Pro users. It adds a 1 million‑token context window, sharper coding skills, and more reliable computer‑use abilities—all without changing the $3‑$15 per‑million‑token pricing. If you need longer documents or complex code handled in one go, this upgrade delivers instantly.
Key Improvements in Claude Sonnet 4.6
Massive 1 Million‑Token Context Window
The new beta context window expands from 100 K tokens to a full 1 million, letting the model keep track of sprawling documents, multi‑step codebases, or extended chat histories without chopping them up. You’ll notice smoother interactions when feeding large contracts or research papers.
Enhanced Coding Capabilities
Sonnet 4.6 shows noticeably stronger coding performance and higher consistency in following instructions. Developers report faster refactoring of thousands of lines of code and more accurate generation of complex queries, all while staying within the affordable Sonnet pricing tier.
Advanced Computer‑Use Skills
The model now navigates spreadsheets, fills multi‑step web forms, and manages several browser tabs with near‑human proficiency. These improvements make it a practical assistant for routine office automation tasks that previously required manual effort.
Safety and Reliability
Extensive internal evaluations confirm that Sonnet 4.6 is as safe as, or safer than, Anthropic’s recent Claude releases. The model maintains a warm, honest tone and exhibits strong safety behaviors, reducing the risk of high‑stakes misalignment in production environments.
Pricing and Availability
Pricing remains unchanged: $3 per million tokens for Free users and $15 per million tokens for Pro users. The upgrade is automatically applied to all existing Free and Pro accounts, so you get the new capabilities without any extra cost.
Why It Matters for Your Business
By delivering Opus‑level performance at Sonnet pricing, Anthropic opens high‑capacity AI to a broader range of teams. You can now experiment with AI‑driven report generation, design brainstorming, or internal tool automation without scaling to premium tiers.
Practical Use Cases
- Legal contract analysis: Feed an entire suite of agreements for clause‑level review.
- Scientific research assistance: Load a full paper plus supplemental data for cohesive discussion.
- Large codebase refactoring: Refactor thousands of lines of code in a single session.
- Data entry automation: Automate legacy system UI interactions without custom APIs.
In short, Claude Sonnet 4.6 isn’t just a minor tweak—it’s a substantial step toward making high‑capacity, reliable AI a default part of everyday workflows. If you start exploring its new context length today, you’ll see how quickly it can become a true co‑pilot for your team.
