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Kimi K3's pricing of $3/million input and $15/million output tokens matches Anthropic's Claude Sonnet series and makes it the most expensive Chinese-lab model released to date, a large jump from K2.6's $0.95/$4.

K3's pricing is a sharp increase over Moonshot's earlier models and puts it in the same price bracket as Claude Sonnet, making it the priciest Chinese-lab release yet. ✦ AI generated

Simon Willison · Simon Willison's Weblog · 2026-07-16 · original ↗

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The new model is notable for the pricing: $3/million input tokens and $15/million output tokens, putting it at the same level as Anthropic's Claude Sonnet series and making it the most expensive model released by a Chinese AI lab to date.

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▦ Anthropic ✳ Claude Sonnet ✳ Kimi K3

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extends → Kimi K3 is Moonshot AI's most capable model to date, a 2.8 trillion parameter model being called the first open 3T-class model, surpassing DeepSeek's 1.6T v4 Pro.Simon Willison · Simon Willison's Weblog supports → Kimi K3's benchmark story might be overstated unless validated on hidden or uncontaminated evals like LiveBench, and if the model 'thinks forever,' its real-world cost could end up less favorable than advertised.Bindu Reddy · Latent Space