ClosedMicrosoft/10 trustVerified

MAI-Voice-2.1-Flash

Name: MAI-Voice-2.1-Flash
Rating: 7

The fast, high-volume sibling of MAI-Voice-2.1 — same 23 languages, tuned for responsive live conversation.

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About

MAI-Voice-2.1-Flash, released October 1, 2026 by Microsoft AI, is the latency-optimized sibling of MAI-Voice-2.1. It supports the same 23 languages and cross-language voice identities but is built for responsive, high-volume voice applications where reply time matters more than maximum expressiveness.

It completes Microsoft's first-party voice-agent pipeline on Foundry: MAI-Transcribe-2-Streaming hears (~130ms to first partials), a reasoning model thinks (~350ms), and Voice-2.1-Flash starts speaking (~150ms), for a full conversational turn in well under one second.

Like its siblings it launched in public preview through Azure Speech in Microsoft Foundry, with no SLA until general availability.

Specs

Context window

n/a (audio model)

Pricing

$15 per million characters (provider-published); public preview

Free quota

none published

API access

Azure Speech in Microsoft Foundry (public preview)

Weights

Closed — API only

Released

October 1, 2026

Benchmarks

Provider-reported: latency-optimized variant of MAI-Voice-2.1; no published independent benchmark scores at research time.

Provider-reported unless a source says otherwise. Benchmarks are marketing-adjacent by nature — treat them as directional.

Use cases

text-to-speechvoice-agentscall-centersrealtime-audio

Trust score — 7/10

/10 trustVerified

Release facts (October 1, 2026; Microsoft AI; 23 languages; $15/1M characters; public preview via Foundry/Azure Speech) corroborated across Unite.AI, TechTimes, YFarmX, and Slator. Docked for: (1) latency-vs-quality tradeoff figures are Microsoft's own framing with no independent test; (2) public preview, no SLA; (3) proprietary with no weights.

How the trust score is built

Full methodology →

Adoption · stars/downloads, log-scaled vs peers: 6.0/10
Maintenance · recency, releases, issue load: 10.0/10
Openness · license + docs: 2.0/10
Manual review · sanity read + red-flag check: 7.0/10

· Adoption 6: Azure Speech / Foundry public preview
· Maintenance 10: released 2026-10-01, current MAI voice line
· Openness 2: proprietary hosted model, no weights
· Manual 7: release facts (Oct 1 2026; 23 languages; $15/1M chars; public preview) corroborated across Unite.AI, TechTimes, YFarmX, Slator; docked for provider-only latency framing with no independent test, preview status, closed weights