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Sesame

AI · San Francisco, United States · Founded 2023

AI research team building human-like voice companions that listen, speak and assist throughout daily life MoreLess

Sesame AI is pioneering a new era of voice companions—bringing speech to life through devices that blend seamlessly into daily life. Their core mission is to make voice feel nuanced and natural, not robotic or forced. To achieve this, they’re building advanced voice models with the subtle pauses, breaths, emotions, and timing of real conversation. The result is a voice interface that feels more like chatting with a friend than issuing commands to a machine.

At the heart of this experience is their Conversational Speech Model (CSM)—a sophisticated AI trained to understand context in real time and respond fluidly. Early demos have amazed listeners by crossing the “uncanny valley,” delivering speech that feels surprisingly human. To make these companions truly practical, Sesame is also designing lightweight wearable devices—specifically sleek glasses—that stream high-quality audio directly from your voice companion as it observes your surroundings. The combination of hardware, software, and machine learning creates a unified system designed to be always present, always listening, and always helpful—without ever being intrusive.

Their ultimate goal is clear: turn voice into a rich, everyday interface, and give people a personal companion that’s conversational, intuitive, and naturally integrated into their lives.

Company overview

Sesame company information

The essential company record, classifications and operating signals in one place.

Status
Operational
Founded
2023
Headquarters
San Francisco, United States
Employees
79
Open positions
18
Dealroom signal
94.8
technologyArtificial Intelligenceclient focusb2ctechnologyHardwaretechnologyDeep TechtechnologyMachine LearningtechnologyNatural Language ProcessingsectorHuman Computer Interactionbusiness modelManufacturingbusiness modelSaaSsectorSpeech RecognitionsectorVoice RecognitionsectorConversational AIsectorCore AIsectorVirtual Assistant

Valuation & funding

Sesame funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES BOther financing Oct 2025 $250M $1B Spark Capital · Sequoia
SERIES AOther financing Nov 2023 $58M $230M Andreessen Horowitz · BIG Ventures · Matrix · Spark Capital
SEEDOther financing Sep 2023 $10M $40M Undisclosed
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Growth signals

Sesame website traffic

Latest recorded traffic for Sesame is 1.1M monthly website visits, up 0% over the last three months. Sesame's team grew 0% over the past year.

Latest monthly visits1.1M 3-month web change0% 1-year team growth0%
Monthly website visits14 observations · Jun 2025–Jul 2026
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Comparisons

Sesame compared with similar companies

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Talent graph

Sesame's talent

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Team profiled 14 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 4 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

5 investors on Sesame's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Series A 5 investors entered at this stage

Global footprint

Where Sesame has talent and traffic

Workforce by country
🇺🇸 United States · San Francisco HQ
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In the news

Latest news about Sesame

Recent press, funding announcements, and product moves mentioning Sesame — open to read from the original sources.

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Market sentiment

What the market is saying about Sesame

An AI-synthesized read of the highest-engagement posts about Sesame on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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