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Anthropic Ships Claude Sonnet 5 as Interest Grows in Pairing It With Fable 5

  • Foundation Models
  • AI Agents
  • Software Dev & Coding

Anthropic released "Claude Sonnet 5," the newest model in its balanced lineup, around June 30, 2026. Positioned as the "most agentic Sonnet" and the successor to Sonnet 4.6, it still falls short of higher-tier models on standalone benchmarks, yet is being received as a way to improve real-world efficiency when combined with a multi-model stack.

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