Microsoft Launches MAI-Transcribe-2-Streaming and Two MAI-Voice Models

Microsoft AI on October 1, 2026 launched MAI-Transcribe-2-Streaming, its first streaming transcription model, alongside two new text-to-speech models, MAI-Voice-2.1 and MAI-Voice-2.1-Flash, with all three available through Microsoft Foundry.

MAI-Transcribe-2-Streaming and the Artificial Analysis Benchmark

Microsoft describes MAI-Transcribe-2-Streaming as delivering low-latency, real-time transcripts in 60 languages with automatic, continuous language detection. The company said the model ranks No. 1 for accuracy for both final and partial transcripts on Artificial Analysis, and that it sits on the Pareto frontier of the benchmark’s accuracy-versus-latency evaluation, meaning higher accuracy does not require a heavy latency tradeoff. The leaderboard chart in the post, citing the Artificial Analysis streaming leaderboard dated September 28, 2026, shows the model at a 2.5 percent final word-error rate, a 2.8 percent first-partial rate, and 0.13 seconds to…