The company describes it as a 3-trillion-parameter, post-trained version of Kimi K3. It is available through Moonshot applications and its developer API; Moonshot says it plans to release the weights under an open licence on November 4.
The listed API price for the standard model is $2 per million input tokens, $10 per million output tokens, and $0.20 per million cached-input tokens. A Highspeed tier is listed at $4, $20, and $0.20 respectively. VentureBeat reports that Artificial Analysis measured 67% on Terminal-Bench 4.0, 73% on AutomationBench-AA, and 64% on its Cyber Index.
The source reports differing results across evaluations. Moonshot's own Terminal-Bench comparison puts Kimi slightly behind Claude Opus 5.5, while Artificial Analysis puts it ahead. These figures do not establish universal coding or reasoning superiority, nor do they predict performance in a particular team's environment. The article also reports allegations of paid influencer promotion; the supplied source does not establish those allegations as fact.