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November 1, 2025
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Claude 3.7 Sonnet - Anthropic’s best publicly available model (feb 24, 2025 – may 21, 2025)

Description:

Anthropic unveils Claude 3.7 Sonnet, a hybrid reasoning model that integrates rapid responses with extended, step-by-step thinking within a single system. This design allows users to toggle between quick answers and deeper reflection as needed. The model demonstrates significant improvements in coding and front-end web development tasks. Alongside Claude 3.7 Sonnet, Anthropic introduces Claude Code, a command-line tool in limited research preview, enabling developers to delegate substantial engineering tasks directly from their terminals.

Added to timeline:

Date:

feb 24, 2025
may 21, 2025
~ 2 months and 26 days

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