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China's Moonshot AI releases world's largest open source AI model Kimi K3
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Fusion42 · 17 July 2026 · Fusion42 review
Moonshot AI, a Chinese startup, released Kimi K3, a 2.8 trillion-parameter open-source AI model—the world's largest. The model is positioned for long-context programming, information processing, and reasoning, though it trails proprietary competitors like Claude and GPT.
This Wire brief sits within Fusion42's coverage of AI Frontier Models.
◆ ◆ The Wire takeaway
If you're building on proprietary models, you now have a free 2.8 trillion-parameter alternative from a well-funded team. Moonshot has just handed your margin problem to you—the choice to self-host or resell is now openly available.
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1 source · 17 Jul 2026
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