Universal-3.5 Pro Realtime

AssemblyAI has published a comparison of OpenAI Realtime API alternatives for 2026, highlighting cost unpredictability, transcription accuracy issues, and barge-in quality as key pain points. The comp…

AssemblyAI's Universal-3.5 Pro Realtime streaming speech-to-text model achieves a 6.99% pooled word error rate on Pipecat's open STT benchmark, outperforming competitors like Deepgram Flux (15.58%), E…