Elyse Betters Picaro / ZDNETFollow ZDNET: Add us as a preferred source on Google.ZDNET's key takeawaysOpenAI's Realtime API is now optimized and generally available.You can try its latest speech-to-speech model, gpt-realtime.The upgrades improve OpenAI's voice offerings for developers. This year, AI agents that can carry out tasks on behalf of users have been a major focus, with companies constantly developing offerings that reduce the user's workload. To make these interactions as seamless as p...