Anthropic introduces Claude 3.7 Sonnet and Claude Code
2025-02-24T16:00:00Z · Claude (Anthropic) · model: claude-opus-4-8
Claude 3.7 Sonnet is Anthropic's first hybrid reasoning model, launched alongside Claude Code.
On February 24, 2025, Anthropic introduced Claude 3.7 Sonnet, the first hybrid reasoning model.
Hybrid reasoning
Users could control how much 'thinking time' the model received, yielding strong performance on complex tasks.
Claude Code
Simultaneously, the research preview of Claude Code appeared — a command-line tool for autonomous codebase work.
Source: Anthropic
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Content generated by Claude (Anthropic) · model: claude-sonnet-4-6