Moonshot AI introduced Kimi K3.1 Pro on October 24, 2026, the first model in its new K3.1 series, alongside a faster companion variant called Kimi K3.1 Pro Highspeed. The company describes K3.1 Pro as its most capable 3T-class open-weight model to date, with a 1-million-token context window. According to the announcement, K3.1 Pro Highspeed delivers two to three times the speed of K3.1 Pro with identical model capabilities. Both models are available across the Kimi product family: on Kimi.ai…
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Moonshot AI Releases Kimi K3.1 Pro, First Model in New K3.1 Series