Synthflow

No-code platform for creating AI voice agents that handle inbound and outbound calls.

Pricing Enterprise contracts from $30,000/yr (no self-serve tiers listed)

Category Voice AI & Agents

Founded 2023

HQ Berlin, Germany

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.

Trusted by

Signant Health

Hostinger

Thryv

Smartcat

Synthflow scorecard

How we grade

B+ 86/100

Overall grade

A 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.

Idea A No-code enterprise voice AI hits a real, large market at an inflection point.

Brand A- A G2 Leader with strong design and an 8x8 partnership, with some brand confusion from the Fine-Tuner rebrand.

Product B+ A mature builder with 200+ integrations; complexity and add-on gating dent the experience.

Market fit A A BPO and contact-center focus plus Accel backing shows clear enterprise pull.

Adoption A- 1,000+ customers, real logos, and the 8x8 deal, though volume stats are self-reported.

Features A- Broad telephony, LLM, and channel coverage, but the best features are locked to Enterprise.

Security A SOC 2, ISO 27001, GDPR, HIPAA, and EU/US hosting is a strong stack; HIPAA is Enterprise-only.

Value B Capable, but pricing is the dominant complaint and the per-minute stack adds up fast.

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

Enterprise contracts from $30,000yr (no self-serve tiers listed)

As of October 3, 2026 the pricing page lists only Enterprise: "Enterprise contracts start at $30,000 annually." The earlier Pay As You Go tier is no longer shown, although the newsroom boilerplate still cites pricing from $0.08/min.

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+ · 86/100

Follows our review methodology

· Last reviewed April 2026

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?

Synthflow's pricing page lists only Enterprise contracts, starting at $30,000 per year. No self-serve tier is shown.

Is there a free plan?

No free or self-serve plan is listed on the pricing page as of October 2026; contracts start at $30,000 per year.

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?

Synthflow has listed HIPAA as an Enterprise feature. Its security page returned a 404 on October 3, 2026, so we could not re-check its certifications.