Retell
Voice platformBills per minuteVerified
$99/mo
Pay as you go (example stack)Pay per use
Retell vs Synthflow: pricing compared (2026)
Two voice platforms, priced at your call volume from each vendor's own pricing page.
Pay per use
Synthflow
Voice platformQuote on requestVerified
Quote only
No volume priceSee its plans
$99/moQuote onlyOnly Retell publishes prices. Synthflow lists no price per call volume.
At your volume
Only Retell publishes prices
Synthflow lists no price per call volume, so there is no price to set against Retell's $99.
Cheapest to start
Retell, from $0/mo
Pay as you go at $0.11/min. Synthflow lists no price per call volume.
What each price leaves out
One side has no price
Retell: One example setup from the vendor's own estimator. Synthflow lists no price per call volume.
Cost as calls growMonthly cost as your calls grow
- Retell
- Synthflow
| Calls a month | Retell | Synthflow |
|---|---|---|
| 0 | $0 | No public price |
| 100 | $33 | No public price |
| 200 | $66 | No public price |
| 300 | $99 | No public price |
| 400 | $132 | No public price |
| 500 | $165 | No public price |
| 600 | $198 | No public price |
| 700 | $231 | No public price |
| 800 | $264 | No public price |
| 900 | $297 | No public price |
| 1,000 | $330 | No public price |
| Calls a month | Retell | Synthflow |
|---|---|---|
| 0 | $0 | No public price |
| 100 | $33 | No public price |
| 200 | $66 | No public price |
| 300 | $99 | No public price |
| 400 | $132 | No public price |
| 500 | $165 | No public price |
| 600 | $198 | No public price |
| 700 | $231 | No public price |
| 800 | $264 | No public price |
| 900 | $297 | No public price |
| 1,000 | $330 | No public price |
Plans side by side
- Pay as you go (example stack)Fits 300 calls$0
Features
| Feature | | |
|---|---|---|
| Live transfer | Yes | |
| Integrations | Twilio, Vonage | Cal.com, GoHighLevel, HubSpot, Salesforce, Zapier |
| Channels | Voice, WhatsApp |
- Yes
- Twilio, Vonage
- Cal.com, GoHighLevel, HubSpot, Salesforce, Zapier
- Voice, WhatsApp
Both have: appointment booking, SMS, outbound calls, recordings and transcripts, EU/GDPR, HIPAANot verified for either: languages, human backup
Pick Retell if…
- You want the lowest starting price: $0/mo for pay as you go at $0.11/min.
- You need live transfer.
- You book or log calls in Twilio or Vonage.
Questions
How does Retell pricing compare with Synthflow?
At 300 calls of 3 minutes, Retell is $99/mo. Synthflow lists no price per call volume, so there is no figure to set against it.
Does Retell or Synthflow book appointments?
Retell: yes, appointment booking is recorded. Synthflow: yes, appointment booking is recorded.
Are the Retell and Synthflow prices verified?
Retell: verified, read on its pricing page. Synthflow: verified, read on its pricing page.
Where do these prices come from?
Each vendor's own pricing page. Retell: retellai.com, checked October 28, 2026 (Verified). Synthflow: synthflow.ai, checked October 29, 2026 (Verified). Retell pricing page · Synthflow pricing page
Does the Retell or Synthflow per-minute price include the model, voice, and phone line?
Retell: One example setup from the vendor's own estimator. Synthflow lists no price per call volume.
Are the links to Retell and Synthflow affiliate links?
The Retell button goes to the vendor's own site and is not an affiliate link. The Synthflow button goes to the vendor's own site and is not an affiliate link. Commissions never change how Toolcrew ranks vendors.
