The article says weights will be released in the coming days, and hints it's likely around 50-70B active params.
Edit: OpenRouter still describes it as an open-weight model: https://openrouter.ai/moonshotai/kimi-k3
Guess we'll see!
Edited: I was wrong.
"Kimi K3 is the first open-source model to reach the 2.8-trillion-parameter scale. It is the latest step in Kimi's continued push of model-scale boundaries: in 9 of the past 12 months, Kimi models have set new records for open-source model scale."
The page has definitely changed.
(I'm not sure why you would be skeptical of somebody recollecting something they probably read only half an hour earlier.)
The full [Kimi K3] model weights will be released by July 27, 2026. Further details on the architecture, training, and evaluations will be released alongside the Kimi K3 technical report.
> Kimi K3 is the first open-source model to reach 2.8 trillion parameters.