Gemini does but it's not as good as Google vision, and the format it's différent Here it's the documentation https://cloud.google.com/vertex-ai/generative-ai/docs/boundi...

Also Simon Willison Made a blog post that might be helpful https://simonwillison.net/2024/Aug/26/gemini-bounding-box-vi...

I hope that this capability improves so I can use only Gemini API.

Try MinerU 2.5 with two-step parsing. It gives good results with bounding boxes per block. Not sure if you can get it to do more detailed such as word or character level.