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Onyx

AI · San Francisco, United States · Founded 2023

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Onyx provides a mobile application that functions as an AI-powered personal trainer. The application uses a smartphone's camera to track user movements during exercise, automatically counting repetitions and providing real-time feedback on form to prevent injuries and maximize effectiveness.

The service offers personalized workout programs tailored to individual fitness goals, such as strength training, muscle building, or weight loss. It is designed for at-home use, targeting individuals seeking a convenient and data-driven approach to their fitness routines. The platform serves as an all-in-one solution for monitoring workouts, tracking progress over time, and receiving motivational support.

The business operates in the digital health and fitness market, competing with other home workout and fitness tracking applications. Its primary business model is likely centered around a mobile application available on both iOS and Android, potentially employing a freemium model where core features are free and advanced functionalities or personalized coaching are offered through a subscription.

Keywords: AI fitness, personal trainer, home workout, mobile fitness, workout tracker, form correction, rep counting, personalized fitness, digital health, fitness app

Valuation $0–100M
Revenue $1–10M
Headcount <100
Total funding $10–50M
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Company overview

Onyx company information

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

Status
Operational
Founded
2023
Headquarters
San Francisco, United States
Employees
32
Open positions
None listed
Dealroom signal
87.2
client focusb2btechnologyArtificial Intelligencebusiness modelSaaSsectorAI AgentssectorYC W24industryEnterprise Software

Valuation & funding

Onyx funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SEEDOther financing Mar 2025 $10M $40M Arash Ferdowsi · Khosla Ventures · Y Combinator · Kulveer Taggar
SEEDOther financing Mar 2024 $125K $500K Y Combinator
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Financials

Revenue and workforce over time

Available revenue and workforce history. Fields without reported data are omitted.

YearRevenueGrowthEmployees
2026 $2.1M 0% 32
2025 $2.1M 32
2024 10
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Growth signals

Onyx website traffic

Latest recorded traffic for Onyx is 370K monthly website visits, down 46.4% over the last three months. Onyx's team grew 0% over the past year.

Latest monthly visits370K 3-month web change-46.4% 1-year team growth0%
Monthly website visits26 observations · Jun 2024–Jul 2026
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Comparisons

Onyx compared with similar companies

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Talent graph

Onyx's talent

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Team profiled 5 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 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

8 investors on Onyx's cap table

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

Seed 7 investors entered at this stage
Y Combinator
Khosla Ventures
First Round Capital
Arash Ferdowsi
Kulveer Taggar
Gokul Rajaram
Amit Agarwal
Other known 1 additional known investor
Pioneer Fund

Global footprint

Where Onyx has talent and traffic

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

Latest news about Onyx

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

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Market sentiment

What the market is saying about Onyx

An AI-synthesized read of the highest-engagement posts about Onyx 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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