I use Claude at work; provided by my employer. I pay DeepSeek on a personal capacity.

I honestly have a better experience using DeepSeek, in part because since the cost is lower I feel more free to experiment with it. But in part because the model is excellent, and can handle everything I throw at it in a collaborative manner.

I am really excited for when V4 is out of preview and they are done with all the post-training bit.