Claude Sonnet 4.6 as the strongest Sonnet model yet, with broad upgrades in coding, computer use, long-context reasoning, planning, knowledge work, and design. It says the model now has a 1 million token context window in beta, performs closer to Opus-level intelligence at the cheaper Sonnet price, and became the default model for Claude’s free and paid plans without a price increase over Sonnet 4.5. The article puts special emphasis on computer use, saying Sonnet 4.6 is much better at navigating software, spreadsheets, forms, and multi-step workflows, while also improving resistance to prompt injection attacks. Anthropic also says early users preferred it over Sonnet 4.5 for coding and even over Opus 4.5 in many cases because it followed instructions better, hallucinated less, and was more consistent on long tasks. Overall, the post presents Sonnet 4.6 as a more practical, high-performance model for both developers and business users, with new platform features like adaptive thinking, context compaction, better tool use, and stronger enterprise integrations.

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