https://www.theguardian.com/technology/2025/jan/29/openai-chatgpt-deepseek-china-us-ai-models

ChatGPT maker cites IP protection concerns amid reports DeepSeek used its model to create rival chatbot

OpenAI has warned that Chinese startups are “constantly” using its technology to develop competing products, amid reports that DeepSeek used the ChatGPT maker’s AI models to create a rival chatbot.