OpenAI has completed its acquisition of io, a hardware start-up co-founded by Apple's ex-chief design officer Jony Ive, who worked on devices including Apple's iPhone, iPad, iPod and MacBook Air. "We're thrilled to share that the io Products, Inc. team has officially merged with OpenAI," the ChatGPT-maker said in a statement. The deal was valued at nearly $6.5 billion.