Management also said OpenAI was not Broadcom's mysterious $10 billion customer.Broadcom (AVGO 2.09%) became the latest chipmaker to see its stock jump after announcing a partnership with ChatGPT owner OpenAI. This follows in the footsteps of Nvidia and Advanced Micro Devices, which also struck deals with the AI model company, although no equity is exchanging hands as with the prior deals.As part of its deal, Nvidia will invest up to $100 billion in OpenAI, while OpenAI will get up to a 10% equity stake in A ...