DeepSeek has been accused of intellectual property theft. OpenAI stated that there is a problem because OpenAI’s technology was used to build DeepSeek. OpenAI’s terms of service explicitly prohibit customers from copying its technology or using its results to create competitive AI models. DeepSeek has been performing well compared to other US-developed models on a much smaller budget. This Chinese AI platform has managed to make the US stock market lose $1 trillion in a single day.