# Stammer.ai vs Synthflow AI: What You Need to Know (July 2026)

> The two whitelabel agent plays: Stammer's $197 agency dashboard vs Synthflow's $2,000 whitelabel add-on — chat-first vs voice-first.

HTML version: https://www.seldonframe.com/compare/stammer-ai-vs-synthflow

Reviewed by Maxime Houle, Founder, SeldonFrame — facts checked July 2026.

## The short version

- **Stammer.ai pricing:** **$49–$497/mo** tiers + usage (~**$0.11–$0.17/min** voice; per-message chat)
- **Synthflow AI pricing:** Usage-based from ~**$0.08–$0.09/min** + LLM & telephony **add-on**s; whitelabel listed at **$2,000/mo** or enterprise contracts from ~**$30k/yr**
- **The real trade-off:** The two whitelabel agent plays: Stammer's **$197** agency dashboard vs Synthflow's **$2,000** whitelabel **add-on** — chat-first vs voice-first.
- **The third option:** SeldonFrame ships the whole front office at **$29/mo** **flat** — see below

## Stammer.ai

Stammer.ai is a white-label AI chat and voice agent platform. Agencies use it to resell agents under their own brand.

- Best for: Agencies reselling standalone chat/voice agents
- Pricing: $49–$497/mo tiers + usage (~$0.11–$0.17/min voice; per-message chat)
- AI receptionist: Yes — chat and voice agents
- Website/CRM/booking behind the agent: None — no CRM, website or booking calendar behind the agent
- Whitelabel: Yes — white-label dashboard at $197/mo

## Synthflow AI

Synthflow AI is a no-code voice-agent builder for phone receptionists and appointment booking.

- Best for: Non-technical teams launching phone agents from templates
- Pricing: Usage-based from ~$0.08–$0.09/min + LLM & telephony add-ons; whitelabel listed at $2,000/mo or enterprise contracts from ~$30k/yr
- AI receptionist: Yes — no-code voice agents with booking flows
- Website/CRM/booking behind the agent: None — voice agent only; CRM, website and calendar live elsewhere
- Whitelabel: Yes, but as a $2,000/mo add-on or enterprise bundle

## Side-by-side

| Feature | Stammer.ai | Synthflow AI | SeldonFrame |
|---|---|---|---|
| Best for | Agencies reselling standalone chat/voice agents | Non-technical teams launching phone agents from templates | Agencies & builders running AI front offices for clients |
| Pricing model | **$49–$497/mo** tiers + usage (~**$0.11–$0.17/min** voice; per-message chat) | Usage-based from ~**$0.08–$0.09/min** + LLM & telephony **add-on**s; whitelabel listed at **$2,000/mo** or enterprise contracts from ~**$30k/yr** | From **$29/mo** **flat** — **unlimited workspaces** (agency whitelabel from **$99/mo**) |
| AI receptionist (calls, SMS, chat) | Yes — chat and voice agents | Yes — no-code voice agents with booking flows | Native — AI receptionist answers, qualifies & books across voice, SMS & web chat |
| Website, CRM & booking behind the agent | None — no CRM, website or booking calendar behind the agent | None — voice agent only; CRM, website and calendar live elsewhere | Included — multi-page website, CRM, booking calendar, intake forms, review requests in every workspace |
| Whitelabel & client workspaces | Yes — white-label dashboard at **$197/mo** | Yes, but as a **$2,000/mo** **add-on** or enterprise bundle | Included — whitelabel client portal, per-client workspaces, custom domains, one-click multi-client deploy |
| AI usage costs | Platform usage rates per message/minute on top of subscription | Per-minute, with engine/LLM/telephony pieces stacking | BYOK — bring your own AI (and Twilio) keys and pay providers at raw cost, zero markup |
| Sell / resell what you build | Yes — unlimited client resale, agency keeps markup | Yes — via the (paid) whitelabel program | Built in — publish agents to the marketplace or rent them via MCP (**5%** marketplace fee) |

Prices checked July 2026 on [Stammer.ai's pricing page](https://www.stammer.ai/pricing) and [Synthflow AI's pricing page](https://synthflow.ai/pricing).

## If you need what BOTH do

Most people comparing Stammer.ai and Synthflow AI actually need the outcome underneath both: calls and chats answered, leads qualified, jobs booked into a real calendar and CRM, on a site the client owns. SeldonFrame ships that whole front office from one conversation at $29/mo flat (unlimited workspaces, bring-your-own AI keys), with whitelabel included for agencies.

- Honest deep-dives: https://www.seldonframe.com/alternative-to-stammer-ai and https://www.seldonframe.com/alternative-to-synthflow
- Start free: https://www.seldonframe.com/signup · Book a demo: https://app.seldonframe.com/book/seldonframes-workspace-7798/default