Claude Sonnet 4.6 is Anthropic's most capable Sonnet model that represents a full upgrade across multiple domains including coding, computer use, long-context reasoning, agent planning, knowledge work, and design. The model features a 1M token context window in beta, allowing it to handle extensive content while reasoning effectively across all that context.

Key capabilities include significantly improved coding skills with better consistency and instruction following, enhanced computer use abilities that approach human-level capability for tasks like navigating complex spreadsheets or filling out multi-step web forms, and superior performance on long-horizon planning tasks. The model shows major improvements in areas such as frontend code generation, financial analysis, visual output quality with better layouts and animations, and document comprehension workloads.

The model operates with a unique approach to computer use, interacting with software through simulated mouse clicks and keyboard inputs rather than requiring special APIs or purpose-built connectors. It demonstrates sophisticated reasoning capabilities, as evidenced by its performance on benchmarks like Vending-Bench Arena where it developed strategic investment patterns. The model supports adaptive thinking, extended thinking, and context compaction features that automatically summarize older context as conversations approach limits.

Benefits include approaching Opus-level intelligence at a more practical price point, making high-performance AI accessible for more tasks. Users experience fewer rounds of iteration to reach production-quality results, better instruction following with fewer hallucinations, and improved reliability on multi-step tasks. The model excels at complex agentic workloads, deep codebase work, and enterprise document processing.

Target users include developers, enterprises, and organizations needing AI capabilities for coding, document processing, financial analysis, and automation tasks. The model integrates with Claude Developer Platform, Claude Cowork, Claude Code, Claude in Excel with MCP connectors, and major cloud platforms. It's available through API endpoints and supports various tools including web search, code execution, memory, and programmatic tool calling.