Syllable
syllable.ai
Actively hiring
Speech & Audio AI
Conversational AI
AI Agents
As featured in
View 1 job
Follow
Overview
News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$81.7M
3 rounds on record
Latest round
$40M
Venture round · Apr 2022 · 4 yr ago
Team
47
US Form 5500 (plan participants) · Dec 2025 · -11% in a year
Hiring now
1
open roles
Backers
2
Oak HC/FT, TCV
The money's age
Long since its last round
53 months since the last round · hiring slowed
Momentum
0/100
no fresh signals
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Apr 28, 2022
Raised a round Venture round $40M · PYMNTS.com
Jun 29, 2021
Raised a round Venture round $28M · led by Oak HC/FT
Sep 11, 2018
Raised a round Venture round $13.7M · Crunchbase News
2016
Founded
Tractionpublic signals, read monthly
Web presence
top 6%
of 133.2M domains by links, Common Crawl
Hacker News stories
1
best: 1 points
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Apr 2022 | $40M | — | PYMNTS.com |
| Venture round | Jun 2021 | $28M | Oak HC/FT lead | businesswire.com |
| Venture round | Sep 2018 | $13.7M | — | Crunchbase News |
Registers and programsofficial lists and records that name the company
| Legal entity | Syllable Corp | SEC Form D |
Founders and leadersfrom filings, registers and the company's site
Guilherme Medeiros BastosExecutive OfficerSEC Form D
Sarel Kobus JoosteExecutive Officer, DirectorSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
Oak HC/FT 
TCV Investors in similar startupsfunds that back the companies most like this one
Similar startupsby what they do, their industry and backers
Blue Machines AI builds multilingual AI voice agents for enterprises. Its platform enables businesses to automate customer calls and…
Discover cutting-edge chat, email, and voice technology powered with LLM.
Voice and chat AI that outperforms your best agents while staying compliant on every call and giving you full audit trails. Purpose-built…
Callin.io builds enterprise conversational AI voice technology: sub-176 ms response times, multilingual agents and carrier-grade…
Lifelike voice AI digital workers for mortgage and real estate teams — qualifying leads, following up, and booking borrowers across voice…
Build verified Voice & RCS agents with Belle using natural language. Branded, trusted, and compliant by default — from idea to agentic in…
News
Syllable AI Now Available in the Microsoft Marketplace
MOUNTAIN VIEW, Calif., December 03, 2025--Syllable AI Now Available in the Microsoft Marketplace. Microsoft customers can now use Syllable
Read more
Report
Aesop in Words of One Syllable
In the 19th Century, British and American children's literature evolved from puritanical moral and religious instruction to delightfully imaginative tales meant to awaken a sense of wonder. B…
Read more
Report
145 Popular One-Syllable Girl Names
These 145 one-syllable girl names can be sleek and modern or short and classic.
Read more
Report
Syllable : The long abandoned Amiga OS clone
Back in 1994, a gentleman named Kurt Skauen began a new Operating System project that was, in essence, a clone of Amiga OS for x86 PCs.He called it
Read more
Report
Show more news
Tech stack
Technologies named in job postings at Syllable over the last 12 months, by layer, with the share of postings for each.
Technologies in use
4
Postings analysed
1
Stack modernity
80/100
Languages
C#
C++
JavaScript
Python
Sign in to see how your skills match this stack
Sign In
People
Guilherme Medeiros Bastos
Executive Officer
Sarel Kobus Jooste
Executive Officer, Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Growth
Hiring Momentum
48/100
Stable
Open positions
1
0 opened / 0 closed in 30 days
ATS activity
Every ~1 days
10/01/2026
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Backend
100% ▼
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
0
Countries
1
Sunnyvale
United States
HQ
200-500 est. staff
Jobs
≈ $103k – $189k per year (Estimated) • Remote (United States, Canada) • Full-Time • Bachelor's Degree • Mountain View
Python
JavaScript
C#
C++
Apply