Moonshot AI releases Kimi K3.1 Pro language model
MarkTechPost: Moonshot AI Releases Kimi K3.1 Pro: A 2.8T Total/104B Active Params (MoE) Model with 1M Context
Moonshot AI has just released Kimi K3.1 Pro, the first model in its K3.1 series. Kimi K3.1 Pro is a 3T-class open-weight* model with a 1-million-token context window. Moonshot team positions it against the strongest proprietary models on coding, agentic and knowledge benchmarks. For developers, it is cheaper API pricing than K3 and open weights yet not available. *open weights are expected to release in November 2026. TL;DR Size: 2.8T total, 104B active parameters (MoE), 1M-token context
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Moonshot AI released Kimi K3.1 Pro, a large language model with 2.8 trillion total parameters and a 1-million-token context window, available through an API at cheaper pricing than its predecessor. The model performs near the level of leading proprietary models on coding tasks, scoring 65.7% on one benchmark, but substantially trails on science-focused work. The model currently runs only on the Kimi API, with open-source weights expected to release in November 2026, though a faster variant and access through multiple platforms are already available.
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