OpenAI claimed that it had evidence that DeepSeek used its models to help train the cheaper, more efficient -V3 model. The release of -V3 and R1 caused US tech stocks to crash on fears of the generative AI business model being upended, although many stocks began to recover the next day.

KEY TAKEAWAYS OpenAI said Wednesday that it is probing whether Chinese artificial intelligence startup DeepSeek improperly used its data to launch the low-cost model that spooked markets Monday.The comment by OpenAI follows a Bloomberg report that both OpenAI and its biggest backer Microsoft are investigating DeepSeek's model.