Looks like a service called OpenRouter (https://openrouter.ai).

- 'openrouter:deepseek/deepseek-r1'

Probably the API - there is certainly a difference, and I doubt the goal of someone putting out an article like this was to make it look good.

It's anyway missing the point - if you don't like the model then just read the paper and replicate the process. The significance of DeepSeek-R isn't the trained model itself - it's how they got there, and the efficiency.