Anthropic: Claude Opus 4.6 Adds 1M-Token Context Window And New Agentic Coding, API, And Office Tool Updates
By Amit Chowdhry ● Feb 5, 2026
Anthropic has released Claude Opus 4.6, positioning the model as an upgrade to its Opus line with stronger coding performance, more deliberate planning, and improved reliability on longer, more agentic workflows. The company says Opus 4.6 is better at operating in large codebases, conducting code reviews, and debugging by catching its own mistakes, while also applying those improvements to everyday knowledge work tasks such as financial analysis, research, and building documents, spreadsheets, and presentations.