DeepSeek V4 Flash ships MIT-licensed, superseding the preview checkpoint
The 0731 build appeared on Hugging Face at 07:30 UTC on 31 July under an MIT licence, replacing the preview. MIT is the most permissive licence anyone has applied at this capability tier.
MIT is materially more permissive than Apache 2.0 — no patent grant obligations, no attribution requirements beyond the notice. At frontier-adjacent capability, that is close to public domain in practice.
The release pattern is itself notable: a preview checkpoint replaced by a dated production build, published to the hour. That is a software release cadence applied to model weights, and it implies infrastructure for shipping models the way other companies ship binaries.
It sits inside a broader run of permissive Chinese releases that has made the open end of the frontier substantially non-Western, at a moment when OpenAI has moved in the same direction.
Hugging Face — DeepSeek V4 Flash is now official: what changed in the 0731 build →