As Meta Platforms strikes new chip supply deals with AMD and Nvidia, it has been running into problems with AI chips it is designing internally, according to six people with direct knowledge of the matter. Meta last week scrapped the most advanced chip it was developing for training AI models, after struggling with the chip’s design, and shifted its focus to a less complicated version, the people said. The company informed staffers in its AI infrastructure division about the updated plans last week. The decision underscores the difficulty tech giants face in designing AI chips that can compete with Nvidia’s offerings, which dominate the market.