Kim K3.1 Pro

Model ● Covered in 1 story + Follow

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Latest developments

Moonshot AI launches new flagship Kim K3.1 Pro model with 3T parameters SiliconANGLE · 4 hours ago · 24

Timeline

Month Quarter Year

October 2026

Moonshot AI released the Kimi K3.1 Pro model via its Kimi API, with a planned open-weight release by November 4, 2026 Model release

24 Oct Moonshot AI launches new flagship Kim K3.1 Pro model with 3T parameters

Relationships

Products & technology

Derived from Kimi K3 · 1 source
Moonshot AI develops this model · 1 source

Competition

Competes with Claude Opus 5.5 · 1 source
Competes with GPT-6 Astra · 1 source

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TLDRocket 24 October 2026

The biggest throughline today is Moonshot AI doubling down on weight openness—this time with a flagship model it’s positioning as practical, not just publishable. Moonshot’s new Kim K3.1 Pro is a post-trained upgrade of its July Kim K3, now at 3T parameters, and it’s already paired with a concrete score: 92.7% on BenchCAD, a 3D model coding benchmark. The company claims some tasks come out ahead of Claude Opus 5.5 and GPT-6 Astra, but the more telling detail is what Moonshot plans to do with those results: push further into 3D modeling and animation, then open the weights by Nov. 4. The “post-trained” framing matters too—it’s a reminder that raw scale isn’t the only lever; shaping behavior after pretraining can move specific product goals.

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