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Synthflow vs Ziddny

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Entry price
Synthflow from $30000/yr, Ziddny from $5/mo — different billing units, so no direct winner
Public API
Synthflow has one; not confirmed by us for Ziddny
Higher Trust score
Ziddny — 87 vs 80 for Synthflow
Best fit
Synthflow: Contact centres and BPOs automating inbound call volume · Ziddny: Small clinics or schools wanting a front-desk assistant on their homepage
Status
Both up at our last check — Synthflow Oct 29, 2026, Ziddny Oct 16, 2026

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

SynthflowEnterprise platform for building, testing and running AI voice agents that answer and place phone calls over its own telephony.ZiddnyBuild talking 3D-avatar or voice-only assistants and embed them on your site, billed by conversation minute.

Side by side

FactSynthflowZiddny
CategoryVoice Agents & Phone AIVoice Agents & Phone AI
Pricing modelContactPaid
Starts at$30000/yr$5/mo
Public APIYesNot confirmed
Trust score80 / 10087 / 100
PlatformsWeb, APIWeb
CompanySynthflow AIMechaPal K.K.
Launched20232024
Last verifiedOct 29, 2026Oct 16, 2026

What our research says

Synthflow

Synthflow targets companies and BPOs that want to automate a real volume of phone calls with testing and QA around the agents. Small businesses wanting a cheap receptionist bot, or developers wanting pay-per-minute experiments, will find the $30,000 entry point too high.

Pros

  • Own telephony network as well as SIP trunking
  • Built-in simulated-call testing and automatic QA
  • Visual flow builder plus API and CRM integrations
  • Covers both voice and chat agents

Cons

  • No published self-serve plan or per-minute rate
  • Minimum annual contract of $30,000
  • Pricing depends on scoping with sales

Ziddny

The cheapest way in this category to put a talking avatar on a site - five dollars gets you a working assistant rather than a demo, and 30 free minutes let you try it first. Concurrency limits are the honest constraint: two simultaneous sessions on the entry plan means one busy hour will queue visitors.

Pros

  • Both 3D avatar and voice-only modes from the same configuration
  • Deploys as a website embed or a standalone shareable link
  • Entry plan is $5/month and includes five separate assistants
  • Overage is priced per minute rather than forcing a plan upgrade

Cons

  • Concurrent-session caps are low - two on the entry tier, ten on the $25 tier
  • The FAQ still calls the Launch and Engage plans 'coming soon' while the pricing table sells them
  • No documented API for embedding the agent in a native app
  • Minutes expire monthly, so light months are wasted spend

Which one fits

Choose Synthflow if you need

  • Contact centres and BPOs automating inbound call volume
  • Enterprises replacing IVR menus with conversational agents
  • Healthcare, retail and financial services teams booking appointments by phone

Choose Ziddny if you need

  • Small clinics or schools wanting a front-desk assistant on their homepage
  • Testing whether visitors engage with an avatar before committing budget
  • Training or onboarding kiosks that need voice rather than chat

Synthflow vs Ziddny: the questions people ask

Is Synthflow cheaper than Ziddny?

They charge in different units, so there is no like-for-like answer: Synthflow starts at $30000/yr, Ziddny at $5/mo. Entry price is the lowest paid plan as we last verified it.

Which has a public API, Synthflow or Ziddny?

Synthflow ships a public API, as of our last verification. A public API for Ziddny is not confirmed by us — check its developer docs before you plan an integration.

More comparisons

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