Synthflow
No-code platform for creating AI voice agents that handle inbound and outbound calls.
Quick take
A strong, credible choice in enterprise voice AI: fast to deploy, broadly integrated, and compliance-ready. Budget carefully and confirm which features you need are not Enterprise-locked before committing.
Synthflow scorecard
How we gradeA well-funded, compliance-strong, genuinely no-code voice AI platform with credible enterprise traction; the consistent drags are cost and the gating of premium features behind Enterprise.
Overview
Synthflow AI is a Berlin-based no-code platform for building and deploying AI voice agents that automate phone calls for customer service, appointment booking, and lead qualification. Founded in 2023 (originally Fine-Tuner), it has raised $30M from Accel, Singular, and Atlantic Labs. It targets mid-market and enterprise contact centers and BPOs, with 200+ integrations and a usage-based model.
Strengths & limitations
Strengths
- +Truly no-code, accessible to anyone
- +Fast time-to-deploy
- +Good template library
Limitations
- –Less customizable than developer platforms
- –Can sound less natural than Vapi or Retell
- –Pricing tiers can be limiting
Pricing
Two live tiers. Pay As You Go starts at $0 with usage-based billing: voice engine $0.09/min, LLM $0.02-0.05/min, plus telephony ($0.02/min managed Twilio or bring-your-own at $0.00). Add-ons run $0.04/min each for routing and latency and $2,000/mo for white-label. Enterprise (10K+ min/mo) is custom-priced with SLA, HIPAA, native telephony, and white-label included.
Who it's for
Best for mid-market and enterprise teams (contact centers, BPOs, healthcare, services) that need human-sounding voice agents without an in-house AI team and that can absorb usage-based costs. Solo builders and tiny shops will feel the price and the Enterprise feature gating.
Verdict
B+ · 86/100A strong, credible choice in enterprise voice AI: fast to deploy, broadly integrated, and compliance-ready. Budget carefully and confirm which features you need are not Enterprise-locked before committing.
Key features
- No-code voice agent builder
- Pre-built templates
- Inbound and outbound calling
- Calendar booking integration
- White-label option
Frequently asked questions
How much does Synthflow cost?
Pay As You Go starts at $0 with usage billing (roughly $0.11-0.24/min effective depending on LLM, telephony, and add-ons). Enterprise is custom for 10K+ minutes/month.
Is there a free plan?
Pay As You Go is free to start with no monthly fee; you pay per minute of usage after launch.
Do I need to code?
No. It is a no-code builder aimed at non-technical users, with API access available.
Is Synthflow HIPAA compliant?
Yes, but HIPAA is Enterprise-only. Pay As You Go covers GDPR and SOC 2.
Can I use my own telephony or LLM?
Yes. You can bring your own Twilio ($0.00/min) and choose among GPT models or bring your own LLM.
Company profile
Leadership
Funding history
Investors
Notable customers
