Moonshot launches Kimi K3.1 Pro with weights promised November 4 and faster Highspeed API
[AINews] Kimi 3.1 Pro 104BA-2.8T: Fable-5.1-Class Open Weights narrows Closed-AI lead to 1 month... and Pro Highspeed API with 2-3× speed
What happened
Moonshot launched Kimi K3.1 Pro, a multimodal MoE model with 2.8 trillion total parameters, 104 billion active parameters, and a 1-million-token context window. Artificial Analysis ranked it fourth with a score of 55, while weights remained unpublished and were promised for November 4, 2026. Standard and Highspeed access launched across Kimi products and API, with Moonshot claiming 2–3× faster output at twice the standard price for Highspeed.
Why it matters
The comparison between token prices and measured task costs shows how increased token consumption can offset lower rates when evaluating the economics of agent workloads.
Read next
More changes in today’s briefingKimi K3.1 Pro ranks fourth on Artificial Analysis, approaching Claude Opus 5.5Keep up with AI, one email a day
Model releases, price changes and compute developments, with original sources. Free, confirmed by email, and easy to unsubscribe. Read a past issue · 2026-10-24