About Syllable
Syllable is a Technology company based in San Francisco (United States) founded in 2016 by Sarel Jooste and Adam Spanbauer. AI-based digital assistants for healthcare communication are provided. It operates in the Technology and Healthcare sectors. Syllable has raised $85.6 million across 4 funding rounds from investors including Verily, TCV and Oak HC/FT. Syllable has completed 1 acquisition, including Actium Health. Its chief executive, as recorded, is Kobus Jooste. Its Indian entity Stackbots Technology Private Limited reported revenue of ₹31.3 Lakh. Syllable offers products and services including Agent Builder, Prompt Editor, and Audio Channel Support. Its focus areas include High Tech, Chatbots, Industry Specific and Hospitals And Clinics. Its competitors include Sensely, Vital and Loyal; 3 of its 3 listed competitors have raised funding.
Company details
Founded in 2016 and based in San Francisco, United States, Syllable operates in the healthcare AI sector. AI-driven tools, including the Voice Assistant, Web Assistant, and COVID-19 Vaccine Command Center, are developed for patient interactions. Natural language processing and machine learning models are utilized to deliver information and services through websites or mobile apps. Ontologies covering physician specialties, human diseases, and medical conditions are also maintained.
- Headquarters San Francisco, United States
- Founders Sarel Jooste, Adam Spanbauer
- SectorsTechnologyHealthcare
- Website syllable.ai
- Social LinkedIn X
- Legal Name Stackbots Technology Private Limited
- Date of Incorporation 13 Oct, 2017
- Jurisdiction Bangalore, Karnataka, India
- Indian entity revenue₹31.3 Lakh
FY 2024 · -51% YoY
- Indian entity net loss-₹62.6 Lakh
FY 2024 · -200% margin
- Indian entity EBITDA-₹62.7 Lakh
FY 2024 · -200% margin
- Total Equity Funding$85.6M (USD)
in 4 rounds
- Latest Funding Round$40M (USD), Series C
Apr 2022
- InvestorsVerily
& 3 more
- Investments & Acquisitions
Associated legal entities of Syllable
Syllable operates through Stackbots Technology Private Limited (active). Its filings, financials, charges and directors are on the company page.
| Legal entity | Status | Incorporated | Registered in | Revenue (FY 2024) | Employees | Directors | Company page |
|---|---|---|---|---|---|---|---|
| Stackbots Technology Private Limited CIN U72900KA2017PTC107176 | Active | 13 Oct 2017 | Bangalore, Karnataka | ₹0.3 Cr | 3 | View details |
Products & Services of Syllable
Syllable offers a comprehensive portfolio of products and services, including Agent Builder, Prompt Editor, and Audio Channel Support.
Platform for building voice AI agents for call centers.
Editor for creating and managing AI prompts easily.
System for handling voice calls via SIP or PSTN.
Funding Insights of Syllable
Syllable has successfully raised a total of $85.6M across 4 strategic funding rounds. The most recent funding activity was a Series C round of $40 million completed in April 2022. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $85.6M
- Total Rounds 4
- Last Round Series C — $40M
- First Round $4.3M
(Mar 2017)
- Investors Count 4
All 4 funding rounds of Syllable with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
4 investors in total: 4 institutional.
Investors in Syllable
Syllable has secured backing from 4 investors, including venture fund and institutional investors. Prominent investors backing the company include Verily, TCV and Oak HC/FT.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Venture capital is invested in global technology companies by TCV. | tcv.com | Menlo Park, United States | ||
Investments are made in early-stage healthtech and fintech startups. | oakhcft.com | Stamford, United States | ||
Tech startups are funded by S32, a venture capital entity. | s32.com | Sunnyvale, United States | ||
AI-based solutions for health management are provided. | 2015 | verily.com | Dallas, United States |
Investor details for Syllable
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
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Verified entity values are shown only after access is granted.
Board of directors of Stackbots Technology Private Limited (Syllable)
Stackbots Technology Private Limited is the primary company behind Syllable. The board of Stackbots Technology Private Limited currently have 3 directors; the longest-serving is Guilherme Medeiros Bastos, appointed in 2017. 2 earlier directors have ceased.
| Director | Designation | Appointed | Tenure | Entity |
|---|---|---|---|---|
| Guilherme Medeiros Bastos DIN 06443816 | Director | 13 Oct 2017 | 9 yrs | Stackbots Technology Private Limited |
| Kasimshetty Praveenkumar Nikitha DIN 08198148 | Director | 10 Jul 2019 | 7 yrs 4 mo | Stackbots Technology Private Limited |
| Kasimsetty Balaramaiahsetty Mohankumar DIN 07956057 | Director | 02 Jun 2025 | 1 yr 5 mo | Stackbots Technology Private Limited |
People of Syllable
31 people are tracked at Syllable (12 in leadership, 5 in board & advisors, 14 in team).
| Name | Role | Group |
|---|---|---|
Sarel Jooste | Co-Founder | Leadership |
Adam Spanbauer | Co-Founder | Leadership |
Kobus Jooste | CEO | Leadership |
Tom Truong | VP, Development & Operations | Leadership |
Irene Ma | Director, Finance & Operations | Leadership |
Huy Tran | VP, People Ops & Diversity, Equity & Inclusion | Leadership |
Adam Silverman | Chief Medical Officer | Leadership |
Raphael Cendrillon | Chief AI Officer | Leadership |
Carter Dunn | Chief Product Officer | Leadership |
Jacob Brauer | Vice President, Engineering | Leadership |
Amy Hand | Vp, Client Success | Leadership |
Ibrahim Cotran | VP Of Product | Leadership |
Vignesh Chandramouli | Board Member | Board & advisors |
Angela Lai | Board Member | Board & advisors |
Esther Dyson | Advisor | Board & advisors |
Rick Schlesinger | Advisor | Board & advisors |
Jed McCaleb | Advisor | Board & advisors |
Brian Carlson | Principal Engineer | Team |
Eric Ung | Senior Accountant | Team |
Christopher Zheng | Product Manager | Team |
11 more people are available in the full profile.
Complete people profiles for Syllable
Full employee and board profiles, team structure, tenure and professional contact details require an active premium plan.
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Verified entity values are shown only after access is granted.
Financials of Syllable
Figures of Stackbots Technology Private Limited, the primary company behind Syllable, for FY 2024. Revenue was ₹31.3 Lakh (-51% year on year). Net loss was -₹62.6 Lakh (-200% margin). EBITDA was -₹62.7 Lakh (-200% margin). Revenue has grown at a compounded annual rate of -33% over three years and -23% over five years.
- ₹31.3 LakhRevenue · FY 2024 · -51% YoY
- -₹62.6 LakhNet loss · -200% margin
- -₹62.7 LakhEBITDA · -200% margin
- ₹1 LakhPaid-up capital
- -33%Revenue CAGR, 3 years
- -23%Revenue CAGR, 5 years
Balance sheet, profit and loss, cash flow and ratios of Stackbots Technology Private Limited are on its company page.
Detailed financial statements for Syllable
Statement rows, ratios, five-year trends and downloadable financials of the group companies require an active premium plan.
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Verified entity values are shown only after access is granted.
Investments & Acquisitions by Syllable
Syllable has strategically engaged in corporate development activities, having acquired 1 company. Notable acquisitions include Actium Health.
| Company Name | Description | Domain | Location | Founded | Acquired | Amount |
|---|---|---|---|---|---|---|
AI-powered marketing solutions are delivered for healthcare providers. | actiumhealth.com | Palo Alto, United States | 2014 | Mar 2024 | •••• |
Complete acquisition details for Syllable
Acquired stakes, deal sources and the complete acquisition history require an active premium plan.
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Verified entity values are shown only after access is granted.
Timeline of Syllable
4 dated milestones of Syllable across 8 years, from founding to its latest funding, stage changes and deals.
- Founded Syllable is founded.
- Funding First funding round of $4.3M.
- Funding Latest funding round, Series C, of $40.0M.
- Acquisition Acquires Actium Health.
Competitors of Syllable
Syllable has 3 listed competitors in our database, 3 of them funded. They include Sensely, Vital and Loyal.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| sensely.com | 2013 | San Francisco, United States | $26.48M | 9 | Conversational AI platforms are developed for enterprise healthcare and insurance. | |
| vital.io | 2017 | Claymont, United States | $44.9M | Vital is recognized for patient experience technology in healthcare. | ||
| loyalhealth.com | 2015 | Atlanta, United States | $46M | 113 | Loyal is recognized as a leading digital healthcare platform. |
Detailed competitors of Syllable
The full competitor set, operating metrics and side-by-side benchmarks require an active premium plan.
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Verified entity values are shown only after access is granted.
Web traffic of Syllable
The website of Syllable (syllable.ai) receives about 7.8K visits a month.
- Monthly visits7.8K
▼ 9.7% vs previous month
Websites whose visitors overlap most with Syllable. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
chargemommybooks.com | chargemommybooks.com | 100% | #1,846,160 | – |
Top companies in Chatbots
3 companies that operate in the same segment as Syllable (Chatbots) in United States, ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
Cloud-based omnichannel communication and customer engagement platform is utilized. | 2008 | San Francisco, California, United States | USD 239.77 M | USD 5.07 B | 5,540 | |
Cloud-based business process management suite solutions are delivered. | 2010 | San Mateo, California, United States | USD 400.05 M | USD 838.81 M | 4,500 | |
Sierra is focused on enhancing customer experiences through AI technology. | 2023 | San Francisco, California, United States | USD 1.59 B | 1,107 |
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Related news about Syllable
Complete news archive for Syllable
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Frequently Asked Questions about Syllable
Syllable was founded in 2016 and raised its 1st funding round 1 year after it was founded.
Syllable is headquartered in San Francisco, United States. It is registered at San Francisco, California, United States.
Kobus Jooste is the CEO of Syllable, as recorded in our data.
Syllable is a funded company, having raised a total of $85.6M across 4 funding rounds to date. The company's 1st funding round was a Seed of $4.3M, raised on Mar 2017.
The primary company behind Syllable, Stackbots Technology Private Limited, reported revenue of ₹31.3 Lakh for FY 2024, down 51% year on year.
Founded in 2016 and based in San Francisco, United States, Syllable operates in the healthcare AI sector. AI-driven tools, including the Voice Assistant, Web Assistant, and COVID-19 Vaccine Command Center, are developed for patient interactions. Natural language processing and machine learning models are utilized to deliver information and services through websites or mobile apps. Ontologies covering physician specialties, human diseases, and medical conditions are also maintained.
Syllable offers Agent Builder, Prompt Editor, and Audio Channel Support.
Syllable has made 1 acquisition, including Actium Health.
Syllable operates through Stackbots Technology Private Limited.
The legal entities of Syllable currently have 3 directors, including Guilherme Medeiros Bastos, Kasimshetty Praveenkumar Nikitha, Kasimsetty Balaramaiahsetty Mohankumar.