Announcement
Kimi unveils K3.1 Pro and Highspeed, plans weights release by Nov. 4, 2026
Kimi claims a 1-million-token context window for Pro and two to three times Pro's speed for Highspeed.
TLDR
On Oct. 23, 2026, Kimi announced K3.1 Pro and its Highspeed variant for Kimi.ai, Kimi Work, Kimi Code and its API, with full model weights promised by Nov. 4. Kimi lists separate API prices and reports benchmark scores near leading proprietary models. Its performance comparisons are company reporting, while its cybersecurity scores come from in-house testing; Enterprise access requires an administrator to turn it on.
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