Microsoft AI models are now available on AI Gateway
Source
Kevin Dawkins
Author
Kevin Dawkins
Date
Key takeaways · AI-distilled
Vercel's AI Gateway now serves three Microsoft AI audio models: MAI-Voice-2.1 for expressive speech in 23 languages that keeps a consistent speaker over long passages, a lower-latency Flash variant, and MAI-Transcribe-2 streamingSending a model's response token by token as it is generated, so the reader sees text immediately instead of waiting for the whole answer.Full definition →.
Vercel pitches MAI-Voice-2.1 for narration, audiobooks and lessons, and the Flash variant for voice agents and quick spoken replies. In AI SDK 7, generateSpeech picks a voice by name, such as en-US-Harper:MAI-Voice-2.1-Flash.
streamTranscribe takes a stream of audio chunks (Vercel's example uses 16 kHz, 16-bit PCM) and emits partial transcripts as audio arrives. Partials can change, so Vercel advises replacing the displayed text with each new partial rather than appending.
Vercel says AI Gateway is one of a limited number of platforms offering MAI models, and ties the partnership to MAI's focus on security and zero data retention.
Terms in this piece · Glossary
streaming — Sending a model's response token by token as it is generated, so the reader sees text immediately instead of waiting for the whole answer.
AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
Why it matters
MAI-Voice-2.1, its Flash variant and MAI-Transcribe-2 Streaming are callable through AI Gateway and AI SDK 7 at listed rates with no markup. Voice AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition → builders get low-latency speech and live partial transcripts through one gateway.
