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Sesame AI
Viral full-duplex conversational voice AI behind the Maya/Miles demo and open CSM model
0Visit Sesame AI
https://www.sesame.com
About Sesame AI
Sesame AI is a voice AI research company behind the viral Maya and Miles conversational demo and the open-weight Conversational Speech Model (CSM), released on Hugging Face. Unlike typical text-to-speech engines, CSM is built for full-duplex conversation — it can be interrupted mid-sentence, respond to tone, and hold a natural back-and-forth exchange with the kind of pacing, breath, and micro-pauses that make voice AI sound human rather than robotic. The Maya/Miles web demo went viral for sounding uncannily realistic, drawing comparisons to how ChatGPT reset expectations for chatbots. Sesame's longer-term goal is a wearable, voice-first companion device positioned against smart-glasses and AI-pin style hardware, with the web demo and open CSM model serving as a preview of the conversational engine that would power it. As of 2026 Sesame monetizes primarily through research partnerships rather than a standard SaaS pricing page, and developers can self-host CSM for free.
Key Features
Sesame AI Pros & Cons
✅ Pros
- +Most convincing real-time conversational voice AI most reviewers have tested, with natural interruption handling
- +Open-weight CSM model can be self-hosted for free, unlike most closed voice AI APIs
- +Full-duplex design feels like talking with an AI rather than issuing commands to one
- +Free web demo requires no signup, lowering the barrier to try it
- +Genuine signal of where real-time voice interfaces are heading, not just an incremental TTS update
⚠️ Cons
- −No public consumer pricing or SaaS plan as of 2026 — not yet a production-ready API for most businesses
- −Less mature than ElevenLabs for studio-grade TTS, voice cloning, or dubbing at scale
- −Hardware companion device has no announced ship date or pricing
- −Fewer integrations and enterprise features compared to established voice AI platforms
Who Is Sesame AI Best For?
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