Pankaj Gupta, CEO of the AI model evaluation platform Yupp.ai, announced on the X platform that the platform will soon cease operations. The platform will remain accessible for the next 15 days, during which time users can download data. Existing users will be unable to create new conversations from this date, and new users will not be able to register. Yupp.ai launched in June 2025 and raised $33 million in seed funding last June, led by a16z. The platform allowed users to compare various AI models for free. Users could input prompts and view multiple AI-generated responses, selecting the best result to form a "preference data package." This data was used for post-training and evaluation of AI models. The platform used blockchain technology to ensure transparency in the evaluation process, rewarding users for providing feedback and providing verifiable training data to AI developers.