Claude Sonnet 4.5

Category: AI Development & Platforms

Claude Sonnet 4.5 is Anthropic's best coding and agentic model — superhuman software engineering, computer use and 30+ hour autonomous task execution.

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Claude Sonnet 4.5 · Anthropic Sonnet 4.5 · best coding LLM · agentic AI · AI Agents · 18+ · Freemium · free tier · free trial

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