Anthropic Claude Apps release notesOfficial · official
February 17, 2026 Claude Sonnet 4.6 launch We launched our most capable Sonnet model yet, with a full upgrade of the model’s skills across coding, computer use, long-context reasoning, agent planning, knowledge work, and design. Sonnet 4.6 also features a 1M token context window in beta. Read our blog post for more information: Introducing Claude Sonnet 4.6 .
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