I think Anthropic currently has a slight edge for coding, but this is changing constantly with every new model. For business applications, where tool calling and multi-modality matter a lot, OpenAI is and always has been superior. Only recently Google started to put some small dents in their moat. OpenAI also has the best platform, but less because it is good and more because Google and Anthropic are truly dismal in every regard when it comes to devx. I also feel like Google has accrued an edge in hard-core science, but that is just a personal feeling and I haven't seen any hard data on this yet.