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Applied AI·June 30, 2026·1 min read

Anthropic finally, officially launches Claude Sonnet 5

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Claude Sonnet 5 closing the gap with Opus 4.8 while undercutting on price reinforces the new norm—“good enough frontier” performance at mid-tier cost. If you’re locked into a single premium model, re-run your evals this week; model arbitrage is now a core optimization lever, not a side quest.