Kimi 3.1 Pro 104BA-2.8T Ships as Open Weights, Claims GPT-4.1 Parity with 2-3× Faster API
Moonshot AI released Kimi 3.1 Pro as open weights, a 104B active / 2.8T total parameter MoE model benchmarking at GPT-4.1 (Fable-5.1) class performance. The release includes a "Pro Highspeed" API variant delivering 2-3× faster inference than standard. Latent Space frames the frontier gap between Chinese open-weights and closed Western models as now approximately one month.
A credible open-weights model at this capability tier restructures the build-vs-buy calculus for any enterprise currently paying frontier API prices — and puts pressure on Anthropic, OpenAI, and Google to accelerate release cadence.