Moonshot Launches Kimi K3.1 Pro: 2.8T-Param Open-Weight Model Rivals GPT-6 and Opus 5.5
Kimi_Moonshot · x · 2026-10-24
Moonshot AI released Kimi K3.1 Pro, its most capable 3T-class open-weight model, alongside a 2-3× faster Highspeed variant.
- Specs: 1M-token context, 2.8T total / 104B active params (MoE), multimodal
- Benchmarks: 65.7% on Terminal-Bench 4.0 (ahead of GPT-6 Astra's 58.2%, just behind Claude Opus 5.5's 66.4%); SOTA on OfficeQA Pro v2 (64.4); BenchCAD w/ tools 92.7%; hallucination in finance work down 65%
- Capabilities: full-project coding in Unreal/Unity/Godot, parametric 3D modeling in Blender & CAD, financial modeling with fully linked DCF/LBO statements
- Availability: live now on Kimi.ai, Kimi Work, Kimi Code and API; open weights by Nov 4, 2026
- Pricing: $2.00/MTok input, $10.00/MTok output (2/3 of K3's price); Highspeed $4/$20; cached input $0.20/MTok
Related event: Moonshot AI Releases Kimi K3.1 Pro, Open Weights Coming November 4(5 posts)→
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