OpenAI says it has found evidence that Chinese artificial intelligence start-up DeepSeek used the US company’s proprietary models to train its own open-source competitor, as concerns grow over a potential breach of intellectual property.

Sam Altman hailed the Chinese firm's low-cost AI model as "impressive" and said OpenAI would accelerate the release of "better models" in response.

OpenAI Chief Executive Officer Sam Altman welcomed the debut of DeepSeek’s R1 model in a post on X late on Monday.

ChatGPT creator OpenAI said on Tuesday said that Chinese firms are "constantly" trying to tap into U.S. rivals to improve Chinese artificial intelligence models.

OpenAI has begun offering a version of ChatGPT designed for US government agencies. ChatGPT Gov includes many of the same features found in the Enterprise offering of the chatbot, including access to the company’s GPT-4o model.

OpenAI on Tuesday launched a bespoke version of its ChatGPT artificial intelligence tool for use by the United States government.

OpenAI has asked an Indian court to quash a plea by a group representing Indian and global book publishers that accuse it of copyright breaches, arguing its ChatGPT service only disseminates public information,

This story incorporates reporting fromLive Law, inc42 and EconoTimes.OpenAI has filed a motion in an Indian court to dismiss a lawsuit brought by a coalition of book publishers. The publishers accuse the artificial intelligence company of violating copyright laws through its AI service,