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  Claude 4.6

  Building reliable, interpretable AI systems

  Large Language Models

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  47,939 www.anthropic.com
  Claude — v4.6

  Claude Sonnet 5 Release and access: ships as claude-sonnet-5-20260203, available via Anthropic API, Claude Pro, and Google Vertex AI. Coding benchmark jump: posts 82.1% SWE-Bench Verified, positioned above Claude Opus 4.5 at 80.9%. Pricing reset: priced at $3 per 1M input tokens and $15 per 1M output tokens, framed as a major cost drop vs Opus 4.5. Massive context: 1,000,000-token context window for repository-level understanding, whole-codebase prompts, and large refactors without chunking. Agentic engineering stack: built for multi-step workflows with built-in code execution and self-correction, plus a “Dev Team” mode that spawns parallel sub-agents for implementation, testing, and review.

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