Thats exactly what it is. Its just an api for PaddleOCR-VL-1.6. I wasn't trying to hide that, im sorry if it came out that way. 'Open' because its just an open-weight model under the hood.
But being open-weight model, there is no vendor-lockin. if you stop liking the api endpoint, or we were to increase prices, just run the model yourself elsewhere. So in a sense it is open. At least more than openAI or openrouter :)