While DeepSeek can point to common benchmark results and Chatbot Arena leaderboard to prove the competitiveness of its model, there's nothing like direct use cases to get a feel for just how useful a new model is.

OpenAI claims to have found evidence that Chinese AI startup DeepSeek secretly used data produced by OpenAI’s technology to improve their own AI models, according to the Financial Times. If true, DeepSeek would be in violation of OpenAI’s terms of service. In a statement, the company said it is actively investigating.

OpenAI thinks DeepSeek may have used its AI outputs inappropriately, highlighting ongoing disputes over copyright, fair use, and training data.