OpenAI's Realtime API made "talk to your app" easy to prototype: one model, speech in, speech out, low latency. If you're building voice agents in 2026, you've probably tried it. Prototyping and shipping are different problems, though.
Source: [Dev.to](https://dev.to/martschweiger/openai-realtime-api-alternatives-in-2026-how-to-migrate-2cl9)