Apple Inc. has closed in on an agreement with OpenAI to use the startup’s technology on the iPhone, part of a broader push to bring artificial intelligence features to its devices, according to people familiar with the matter.The two sides have been finalizing terms for a pact to use ChatGPT features in Apple’s iOS 18, the next iPhone operating system, said the people, who asked not to be identified because the situation is private. Apple also has held talks with Alphabet Inc.’s Google about lic...