Regal AI vs Synthflow — Pricing, Plans, and Verified Costs (2026)
Regal AI starts at Free. Synthflow starts at $29/mo. Regal AI is $29/mo cheaper on the entry tier than Synthflow.
How pricing works
These two tools don't price the same way, so the headline numbers below aren't directly comparable until you plug in your own volume.
- Regal AI (Per Usage) — Regal AI bills purely on usage — Custom. There is no fixed per-seat fee, so the monthly cost depends entirely on how much you consume.
- Synthflow (Hybrid) — Synthflow is hybrid: a fixed subscription from $29/mo plus metered usage on top (Starter). Your real bill moves with volume, not seat count.
Per-minute, per-credit and per-token rates exclude any downstream model, speech or telephony costs unless the vendor states otherwise.
Enterprise-grade AI voice agent platform for contact centers. ~$0.20/min all-in based on aggregate data across millions of calls, plus platform and implementation costs. Enterprise-only sales motion — no self-serve tier. Third-party "$29/mo" claims are noise; ignore.
No-code AI voice agent builder with tiered subscriptions + per-minute overages. Starter $29 (50 min), Pro $99 (200 min), Growth $449 (1000 min), Agency $899 (2000 min), Enterprise custom (10K+ min). White-label option runs ~$2,000/mo. Voice engine alone ~$0.09/min; all-in $0.15–0.37/min with LLM + telephony.
All plans compared
| Tier role | Plan | Regal AI monthly | Regal AI annual | Synthflow monthly | Synthflow annual |
|---|---|---|---|---|---|
| Entry paid | — / Starter | — | — | $29 | $29 |
| Mid tier 1 | — / Pro | — | — | $99 | $99 |
| Mid tier 2 | — / Growth | — | — | $449 | $449 |
| Pro / power | — / Agency | — | — | $899 | $899 |
| Enterprise | — / Enterprise | — | — | Custom | Custom |
Tier names differ across vendors. Rows are aligned by tier role, not name. Full tier structures on each tool's page.
What each is best for
Regal AI is worth it if… contact-center teams processing high call volumes (hundreds of thousands to millions of calls/year) that need enterprise integrations, workforce management fit, and negotiated volume rates. Not the fit if transparent self-serve pricing is a must-have or if call volume is under 100K/year — Vapi or Retell AI ship faster and cost less at that scale.
Synthflow is worth it if… small businesses and agencies that want no-code AI voice agents without touching a developer platform like Vapi or Retell. Starter ($29) makes prototyping cheap.
Bottom line: Choose based on how you want to pay — Regal AI is per usage, Synthflow is hybrid.
Choose Regal AI over Synthflow if…
Choose Regal AI if…
- You want to pay only for actual usage (per usage, a free entry tier).
- You match the profile Regal AI is built for: contact-center teams processing high call volumes (hundreds of thousands to millions of calls/year) that need enterprise integrations, workforce management fit, and negotiated volume rates.
- You're building for contact centers.
Choose Synthflow if…
- You're fine with a base subscription plus metered usage on top (from $29/mo).
- You match the profile Synthflow is built for: small businesses and agencies that want no-code AI voice agents without touching a developer platform like Vapi or Retell.
- You need a general-purpose voice agents & speech/audio option rather than a vertical-specific one.
At a glance
| Regal AI | Synthflow | |
|---|---|---|
| Free plan | — | No |
| Entry price | Free | $29/mo |
| Enterprise available | — | Yes |
| Pricing model | Per Usage | Hybrid |
| Last verified | September 10, 2026 | September 10, 2026 |
| Full pricing | View full pricing | View full pricing |
Pricing last verified September 10, 2026. Tracked daily.