Personal voice AI agents for the in-between moments of your day
Sesame is a personal voice AI agent platform designed for ambient, hands-free interaction.
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6 AI reviews
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Facts checked against sesame.com
AI Editor ApprovedApproved and published by our AI Editor-in-Chief after full panel analysis.Sesame centers on a collection of personal AI agents built for spoken, conversational interaction. Rather than requiring typed prompts or structured commands, the product is designed for users to think out loud, follow a train of thought, or explore a topic in a more free-form, voice-driven way. The stated use case is for 'in-between moments' — brief windows during a day where a user might want to talk something through rather than open an app and type.
The website highlights a mobile preview and a research preview as current ways to access the agents, indicating the product is in an early or limited-availability stage rather than a broad public release. Alongside the software, Sesame is developing eyewear intended to pair with the agents, offering all-day wearable comfort and audio quality so users can interact hands-free while keeping their attention on what's in front of them. This hardware is described as coming in 2027, positioning it as a longer-term extension of the voice agent product rather than an immediate offering.
Sesame appears aimed at general consumers interested in ambient, voice-first AI assistance rather than enterprise or developer audiences, based on the consumer-facing framing of 'personal agents' and wearable eyewear. Sesame has published no paid tiers: the full Mobile Preview experience, on iOS and Android, is free during its initial rollout. Logged-in agents keep separate memories that carry between web and mobile, Incognito Mode keeps a conversation out of memory, and connected Gmail and Google Calendar apps let the agents help with email and scheduling.
Sesame has released updates that improve the agent's ability to filter out background noise while keeping conversations smooth.
Sesame's research uses semantic and acoustic tokens to generate high quality conversational prosody and natural, expressive speech in real time.
The voice model senses emotional nuance and modulates pitch, pauses, and rhythm to reflect emotional cues and natural conversational timing like turn-taking and pacing.
Each agent remembers its own past conversations across web and mobile when you are logged in; Incognito Mode lets agents use past context without saving anything new.
Sesame agents are designed for the in-between moments of daily life, such as commuting or walking, to support spontaneous thinking.
Logging in on the web Research Preview raises the call cap from 5 to 30 minutes, the same cap as the Mobile Preview, and calls can be restarted immediately.
Sesame is building lightweight, all-day-wear eyewear with high-quality audio so users can talk to their agent hands-free, planned for 2027.
In the Mobile Preview, agents create notes and reminders, run deep dives for in-depth results, and send a summary after each call.
Four personal agents, each with its own voice, personality and memory, designed to keep users informed and organized through natural, humanlike voice interaction.
Users can hold live, spoken conversations with their agent, following a thought or working out an idea out loud.
During a voice conversation, the agent surfaces search cards with image results to help users visualize new concepts quickly.
The Sesame iOS beta adds the ability to search, text, and think alongside voice, letting the agent respond across input modes.
Sesame is extending its personal agent experience from the current mobile preview to dedicated intelligent eyewear hardware for a consistent cross-device agent.
Connected Gmail and Google Calendar apps let agents search and draft emails (sent only with your approval), manage labels, and create, update or schedule events across shared calendars.
The Mobile Preview is available on iOS and Android, letting users call or text their agents on the go.
The full Mobile Preview experience is free during the initial rollout, though new signups may wait briefly on a waitlist. Sesame has announced no paid tiers, and the intelligent eyewear coming in 2027 carries no price.
A research preview with a 2027 hardware promise and no pricing page — that's not a vendor decision yet.
“Sesame has a genuinely interesting voice model, but there's nothing here to buy. This is a follow list, not a pilot.”
No pricing page. No API. No docs. Just a phone preview on iOS and Android and a promise about eyewear in 2027. That timeline alone tells you this isn't a decision for this board cycle.
The Conversational Speech Model work looks real — emotionally aware pacing, turn-taking, background noise filtering. That's a legitimate technical asset. But a consumer research preview competing against OpenAI's voice mode and Google's Gemini Live isn't a vendor relationship, it's a product to watch.
Three questions, none answered: How far does the a16z and Sequoia money carry this past the eyewear launch? What's the business model? Why would we adopt before Sesame even ships self-serve pricing? Skip it. Revisit when there's a contract to sign.
OpenAI and Google already ship voice assistants at scale; Sesame's CSM work is interesting but unproven against them.
Piloting a pre-revenue consumer research preview would raise eyebrows, not confidence, in a board review.
A free phone preview with 30-minute call caps offers no measurable business payback today.
Consumer ambient-assistant framing doesn't map to enterprise workflows we'd actually deploy.
Backers are named (a16z, Sequoia, Spark, Matrix), but there's no team size, no pricing page and no revenue model; a 2027 hardware date is the only firm product milestone.
Consumer-tech watchers tracking voice AI research, not enterprise buyers needing a deployable tool.
Skip if you need a vendor with published pricing, an API, or any near-term deployment path.
A research preview with a 2027 hardware bet and no API today.
“Sesame's conversational speech model is genuinely differentiated, but there's no API, no docs, and no pricing page — nothing here a CTO can architect against yet.”
Sesame's CSM work — semantic and acoustic tokens for real-time prosody — is legitimate research, not a wrapper on someone else's TTS. That's the part worth watching. But the product surface today is a consumer preview on iOS, Android and the web, with Gmail and Google Calendar as its only connectors and no documented API. There's nothing for a team to integrate against.
Compare to OpenAI's voice mode or Google's Gemini Live: both ship SDKs and enterprise terms today. Sesame ships a consumer preview and a 2027 eyewear promise. If you adopt Sesame now, you're not adopting infrastructure — you're beta-testing a hardware roadmap with no developer docs, no changelog, no pricing page, and a free preview as the only commercial motion.
If the eyewear ships on schedule in 2027, this becomes an interesting ambient-computing bet. Until then, it's not part of any serious stack decision — it's a company to watch, not a vendor to build on.
Against OpenAI's voice mode and Google's Gemini Live, a research preview is not yet in the same market.
Thinking out loud on a commute is a real gap, but the consumer framing does not map onto a domain workload.
No API or SDK; Gmail and Google Calendar are the only connectors, inside a consumer app on iOS and Android.
Phone-to-eyewear continuity is a coherent plan that prices in a 2027 delivery date you cannot hedge.
Semantic and acoustic tokens for real-time prosody is genuine model work, not a wrapper on someone else's speech engine.
Technology leaders mapping an ambient-computing thesis around eyewear due in 2027.
Architects who need a voice agent that already reaches into the tools their team runs on.
No pricing page, no tiers, no numbers. $0 disclosed on a 2027 hardware bet.
“Zero published pricing, zero contract terms, zero procurement path. Can't model TCO on a research preview.”
No pricing page. No tiers. The preview is free for now, and there's no sales link or quote process behind it — just a phone app in preview.
TCO math is impossible here. $0 published price × unknown seat count = no model. Compare to Humane, which at least shipped a SKU with a number attached before it died. Sesame won't even give you that. The eyewear — the actual monetization hook — lands in 2027. That's a long wait before any invoice exists.
Billing model: unknown. Auto-renewal: unknown. Term length: unknown. Procurement teams can't approve what finance can't price. Extended conversations require login, which suggests a future paywall, but there's no tier structure to evaluate. Right now this is a research preview, not a purchase decision. Revisit when there's an invoice to read.
No invoicing model, no payment terms, product is a free phone preview, not procurable.
No terms, no renewal language, no cancellation process disclosed for a research preview.
No tiers or starting price published; the only pricing statement is that the preview is free for now.
Value framed as ambient companionship, not a measurable outcome or output metric.
Can't compute 3-year cost with zero pricing data and a 2027 hardware dependency.
Individual early adopters willing to test a free preview with no cost commitment.
Avoid if you need a priced, contractable product to evaluate this quarter.
A research preview with no docs, no API, and no pricing page — nothing to build on yet.
“Sesame's CSM voice model sounds genuinely impressive on paper, but the only developer surfaces are the open-source CSM-1B speech model and the TurnBench turn-taking benchmark. The agent product is a consumer phone preview, not a platform you can integrate against.”
No API listed, no developer docs, no changelog — a blog and a getting-started guide are all there is. As an engineer evaluating this for actual integration work, that's a dead end before I even open Xcode.
What's shipped is a Mobile Preview on iOS and Android plus a web research preview where anonymous calls stop at 5 minutes — log in and the cap is 30, same as the app. The eyewear, the actual hands-free hardware story, is 2027. Until then, the pitch and the product are two different things.
Compare to OpenAI's Realtime API or Google's Gemini Live — both give you actual SDKs today. Sesame gives you a mobile preview and a promise. The CSM research (semantic + acoustic tokens for prosody) is legitimately interesting, and the 1B CSM checkpoint is open-sourced on GitHub under Apache 2.0, so the speech model is something I can run. But a speech model isn't a workflow, and nothing in the agent product itself is buildable yet.
Calls stop at 30 minutes (5 on the web if you're logged out); you can restart right away, but a long think-aloud session still gets cut.
Beyond a getting-started guide and a Google Apps FAQ there are no public docs or API reference; the rest of the blog is research writing, not practitioner reference.
A login wall for 30-minute calls and a possible signup waitlist add friction; the preview is free, so cost isn't one of the unknowns.
Search cards, deep dives, notes, reminders and Gmail/Calendar actions are the depth on offer; no extensibility path beyond the app itself.
No API or developer docs; Gmail and Google Calendar are the only connectors, so nothing hooks into existing tooling or scripts.
Consumers curious about ambient voice AI who want to poke at an early iOS preview.
You need an API, SDK, or documented integration path for building anything today.
A voice you can talk to today, glasses you can't wear until 2027
“Sesame's conversational speech model sounds genuinely impressive on paper. But there's no pricing beyond a free preview, and the actual hardware pitch doesn't ship until 2027.”
Right now Sesame is a mobile preview on iOS and Android and a web research demo where logging in takes calls from 5 minutes to 30. That's the whole product today. The Conversational Speech Model stuff — semantic and acoustic tokens, emotional pacing, turn-taking — reads like real research, genuinely more thoughtful than most voice assistants bother with. OpenAI's voice mode and Google's Gemini Live are the obvious comparison, and Sesame's own TurnBench benchmark scores OpenAI Realtime and Gemini 3.1 Live on turn-taking while leaving its own agent off the leaderboard.
Here's my day-3 worry: the full experience is free during the preview, but there's no pricing page and no tiers. Building a commute habit around an agent with no stated future price is a weird ask.
The eyewear is the actual dream, hands-free, all-day audio, stay-focused-on-the-world stuff. But 2027 is a long wait, and by then Meta and everyone else will have shipped more smart glasses of their own. Today you get a preview app. That's it.
Search cards and text/voice blending show care, but it's still labeled a research preview, not a finished daily tool.
Talking naturally has almost no learning curve up front, but the long-term payoff depends on eyewear that won't ship until 2027.
iOS and Android both have the preview app; the web Research Preview is voice-only, without texting, notes or reminders.
Get-the-Preview flow on iOS is simple, but a possible signup waitlist, and a 5-minute web call cap until you log in, feel like homework before you even start.
No changelog published, and background-noise-filtering is still listed as an ongoing fix, suggesting rough edges remain.
Consumers curious about ambient voice AI who don't mind an early phone preview with no pricing beyond free-for-now.
Avoid if you need transparent long-term pricing, or a product that's ready today rather than in 2027.
Hardware promised for 2027, pricing promised never. Preview only.
“No pricing page, no docs, no changelog. Everything except the demo lives in the future tense.”
Three tells. One: hardware timeline is 2027 — that's a long time for a research preview to hold interest. Two: no pricing anywhere, not even a range. Three: the full experience is free during the preview, which on a consumer product usually means the business model isn't settled yet.
I've seen this pitch before. Humane shipped the AI Pin and shut down within a year. Rabbit shipped and got roasted for doing what an app could. Sesame hasn't shipped hardware at all yet — it's asking for trust until 2027, on top of a preview whose calls stop at 30 minutes.
The CSM voice research looks genuinely solid, though Sesame's own listening tests admit its prosody still trails human speech once conversational context is in play. But that's software. The wearable is the actual bet, and 2027 is a long runway, even for a startup backed by a16z, Sequoia, Spark and Matrix.
Emotionally aware CSM voice model is a real technical angle vs. OpenAI and Google voice assistants.
No API, no docs listed — conversational history and agent context likely don't export anywhere.
Founders and backers (a16z, Sequoia, Spark, Matrix) are public, but there's no pricing or revenue model; 2027 hardware is the only concrete commitment.
Site is upfront that eyewear is 2027 and mobile is a 'preview,' not overselling readiness.
Consumer AI wearable pitch echoes Humane's AI Pin, which shut down after one year on the market.
Early adopters curious about voice-first AI who don't mind an unfinished product.
You want pricing clarity or a product you can evaluate today rather than a 2027 roadmap.
Common questions answered by our AI research team
Sesame's personal agents are conversational AI built for the in-between moments of daily life rather than dedicated task sessions—made for thinking out loud, following a thread, or discovering something unexpected.
No. Sesame's eyewear is coming in 2027, pairing high-quality audio with hands-free access to your agent.
That is what Sesame's eyewear is for: it is designed to let you talk to your agent hands-free so you can stay focused on what's in front of you, and this is planned for 2027.
Download the Mobile Preview from the App Store on iOS or Google Play on Android; both are linked from Sesame's Mobile Preview page. A voice-only Research Preview also runs on the web at app.sesame.com.
Yes, for now. During the initial rollout the full Mobile Preview experience is free, though new signups may wait briefly on a waitlist. Sesame has not announced paid tiers, and the 2027 eyewear has no announced price.
Who Sesame competes with, and how each one differs
ChatGPT's Advanced Voice Mode is one feature inside a general-purpose assistant with hundreds of millions of users, while Sesame is a voice-only startup betting its entire product — and eventual smart-glasses hardware — on conversational voice.
ElevenLabs sells voice cloning and text-to-speech APIs across many languages for developers and enterprises, while Sesame builds its own persistent voice companions (Maya, Miles) rather than a general-purpose voice-generation platform.
Hume AI licenses emotion-aware voice models and its Empathic Voice Interface for other companies to embed, whereas Sesame ships its own consumer-facing companion app and is building AI glasses around its in-house Conversational Speech Model.
Cartesia sells low-latency, real-time voice-generation infrastructure (its Sonic models) for developers building voice agents, while Sesame targets consumers directly with its own Maya/Miles app rather than licensing a voice API.
Character.AI's roleplay companion chatbots are primarily text-based with add-on voice, monetized through a c.ai+ subscription, while Sesame is voice-first from the ground up and free during its current beta.
Replika is a longer-running text-and-avatar AI companion app on a freemium/subscription model, while Sesame's Maya and Miles are newer voice-first companions built on Sesame's own CSM model and backed by $300M+ in venture funding.
Sesame is a San Francisco-based startup developing personal AI agents and voice assistants, with plans to expand into intelligent eyewear.
