No its fully open sourced. Even Janus is.
https://github.com/deepseek-ai
More importantly, they spelled out their methodology in depth in a paper (the code/implementation is trivial in comparison to the methodology)
https://github.com/deepseek-ai
More importantly, they spelled out their methodology in depth in a paper (the code/implementation is trivial in comparison to the methodology)
I'm very appreciative of what they've done, but it's open weights and methodology, not open source.