Syllable
Sunnyvale, US · Founded 2016 · Delaware corporation · 55 employees on LinkedIn · 4 known investors
Syllable is a platform for building, running, and optimizing production AI agents, offering a no-code conversational builder for domain experts and declarative configurations and APIs for engineering teams. It runs agents on multi-cloud infrastructure (AWS, GCP, Azure, OCI) with observability, governance, human-in-the-loop controls, and security for use cases such as voice automation, call center QA, internal copilots, and support agents.
Founders & leadership
Syllable was founded in 2016 by Sarel Kobus Jooste.
SK
Sarel Kobus JoosteFounder
GM
Guilherme Medeiros BastosExecutive
Investors · 4
Reported raises · per SEC filings
Form D private placements$13.2M disclosed across 1 round · 2018
▶$13.2MraisedSep 2018 · 8 investors · Other TechnologyRule 506(b)
▶$13.2MraisedSep 2018 · 8 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Guilherme Medeiros BastosExecutive Officer
- Sarel Kobus JoosteExecutive Officer, Director
- Offering amount
- $13.7M
- Amount sold
- $13.2M
- First sale
- Aug 2018
- Incorporated
- Corporation, Delaware, 2016
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Competitors · 4
by search overlapSyllaby10 shared keywordsSyllaby is an AI video creation platform that turns text prompts and keyword research into social media videos with scripts, visuals, subtitles, AI voices, and avatars, including faceless and text-to-video formats. It targets businesses, marketers, and content creators producing videos for TikTok, Instagram Reels, YouTube, and ads, with built-in ideation, scheduling, and publishing.
Grammarly8 shared keywordsGrammarly is an AI-powered writing assistant that helps users write with clarity and confidence across over 1 million apps and websites. The platform serves professionals, students, and teams through free and premium versions, and uses natural language processing to refine tone, suggest rewrites, and improve communication effectiveness.
Twilio7 shared keywordsTwilio provides a cloud-based communications platform that enables businesses to integrate voice, messaging, and video into applications using APIs. The platform combines communication channels, contextual data, and AI orchestration for enterprises and developers building customer experiences.
Zapier6 shared keywordsZapier provides a platform for connecting AI models and agents to workflows and business applications, enabling teams to automate tasks across over 9,000 apps without coding. The platform serves enterprises, operations teams, and businesses of all sizes looking to deploy AI-driven automation for lead capture, customer support, employee onboarding, and other business processes.
Companies competing with Syllable for the same Google search keywords, organic and paid, via search-intersection analysis.
In the news
Frequently asked questions
- What does Syllable do?
- Syllable is a platform for building, running, and optimizing production AI agents, offering a no-code conversational builder for domain experts and declarative configurations and APIs for engineering teams. It runs agents on multi-cloud infrastructure (AWS, GCP, Azure, OCI) with observability, governance, human-in-the-loop controls, and security for use cases such as voice automation, call center QA, internal copilots, and support agents.
- Who founded Syllable?
- Syllable was founded by Sarel Kobus Jooste in 2016.
- Who are Syllable's investors?
- Syllable's investors include MemorialCare Innovation Fund, New Enterprise Associates (NEA), Oak HC/FT, TCV.
- How much funding has Syllable raised?
- Syllable has disclosed $13.2M raised across 1 round.
- Where is Syllable headquartered?
- Syllable is headquartered in Sunnyvale, US.