Wire · technology
Moonshot releases Kimi K3, largest open-weight model to date
◆ Sectors
◆ Geography
◆ Source
◆ Verified
Fusion42 · 18 July 2026 · Fusion42 review
Moonshot AI released Kimi K3, a 2.8-trillion-parameter open-weight model with frontier-class benchmark performance (third on GDPval-AA v2), 1-million-token context window, and native vision, with full weights publishing 27 July. The sparse mixture-of-experts architecture keeps inference costs low whilst matching closed-source competitors from Anthropic and OpenAI.
This Wire brief sits within Fusion42's coverage of AI Frontier Models, and 34 sources have reported it between 18 Jul 2026 and 7 Aug 2026.
◆ ◆ The Wire takeaway
If you're building on Claude or GPT APIs today, you now have a frontier-class fallback you can download and run yourself, without paying per token or asking for API access. That changes your unit economics and your negotiating power with Anthropic and OpenAI.
◆ Coverage
34 sources · first reported 18 Jul 2026 · latest 7 Aug 2026
◆ Related on Wire
◆ Topics