Synthflow lets non-technical teams build AI voice agents for inbound/outbound calls without code. Pre-built templates for appointment booking, lead qualification, and customer support.
How Synthflow compares with its closest alternatives
2 of the 5 closest alternatives have a free plan, as Synthflow does. All 5 offer an API, as Synthflow does. Synthflow offers a web app. Of the alternatives, all 5 offer a web app. Synthflow was founded in 2023; the alternatives were founded between 2017 and 2023, 3 of them earlier. Synthflow is based in San Francisco, United States; 2 of its 5 alternatives are in the United States too, and the others in the United Kingdom, Egypt and Singapore.
Market position · Voice
How Synthflow compares in Voice
Synthflow has high opportunity and sits in the top third of 306 live Voice tools on FalcoScan. Across Voice, the average opportunity score is 66.1 and the average saturation score 41.2. FalcoScan rates Synthflow's own market position as open. 92 of the 306 operating Voice tools have hot momentum, and FalcoScan has recorded 11 shutdowns in the category.
Synthflow compared with its closest alternatives
Product
Opportunity
Saturation
Pricing
Pricing from
Free plan
API
Platforms
Momentum
SynthflowFounded 2023 · San Francisco, United States
High
Open
Freemium
$29/mo
Yes
Yes
Web
Hot
RetellAIFounded 2023 · San Francisco, United States
Synthflow has a free tier, with paid plans from $29 a month.
What are the best alternatives to Synthflow?
The closest alternatives to Synthflow that are still running, matched on the AI capabilities, uses and audience they share, are RetellAI, PolyAI, Hume EVI, Intella, and OpenGreet.
Is Synthflow still running?
Yes. As of 2 November 2026, FalcoScan lists Synthflow as operating at synthflow.ai.
Where is Synthflow based?
Synthflow is headquartered in San Francisco, United States.
Does Synthflow have an API?
Yes. Synthflow offers an API.
Who is Synthflow for?
Synthflow is built for SMBs, sales teams, and customer service.
How do I sign in to Synthflow?
Sign in on Synthflow's own website, synthflow.ai. FalcoScan reviews Synthflow but does not run its accounts, so logins, passwords and billing are handled by Synthflow directly.