Alternatives
Vapi alternatives worth comparing
Developer platform and API for building voice agents that make and receive phone calls or run in web apps. Vapi charges a hosting fee per minute and passes through model, voice and transcription costs. Developers look elsewhere when they want a single all-in per-minute price, since Vapi's $0.05 a minute covers hosting and passes the model, voice and phone costs through separately.
Facts read from each vendor’s own site, most recently on 16 October 2026.
What are the best Vapi alternatives?
The main Vapi alternatives are Retell AI, Bland AI, Synthflow and PolyAI. Retell AI publishes an all-in rate of $0.07 to $0.31 a minute. Bland AI charges $0.14 a minute talk time including the model and voices, with telephony separate. Synthflow and PolyAI are enterprise platforms sold by contract, with Synthflow's contracts starting at $30,000 a year.
Vapi and its alternatives on price
| Product | Free plan | Starts at | Billing model | Usage charges | Checked |
|---|---|---|---|---|---|
| VapiOfficial pricing | Not verified | $0.05 per minute hosting, plus model, voice and telephony | subscription + per minute + usage-based | Vapi hosting: $0.05 per minuteHIPAA compliance add-on: $2,000 per month | 16 October 2026 |
| Retell AIOfficial pricing | Not verified | From $0.07 per minute, all components | per minute + usage-based + per call + usage credits | Retell Voice Infra: $0.055 per minuteVoice: Retell Platform Voices: $0.015 per minute | 16 October 2026 |
| Bland AIOfficial pricing | Not verified | From $0.14 per minute talk time, telephony extra | subscription + per minute | Talk time (Start): $0.14 per minuteTransfer time (Start): $0.05 per minute | 16 October 2026 |
| SynthflowOfficial pricing | Not verified | From $30,000/year | subscription | None published | 16 October 2026 |
| PolyAIOfficial pricing | Not verified | Contact sales | Custom quote | None published | 16 October 2026 |
Each alternative, and when it fits
1. Retell AI by Retell AI
You want a per-minute range that already includes the model, voice and telephony, with each part listed.
From $0.07 per minute, all components. Billing: per minute + usage-based + per call + usage credits. Free plan: not verified.
2. Bland AI by Bland AI
You want a rate that includes the language model and voices, and you have your own telephony or accept it billed separately.
From $0.14 per minute talk time, telephony extra. Billing: subscription + per minute. Free plan: not verified.
3. Synthflow by Synthflow AI
You are a larger organisation that wants a managed deployment under an annual contract.
From $30,000/year. Billing: subscription. Free plan: not verified.
4. PolyAI by PolyAI
You run an enterprise contact centre and want a vendor that designs and maintains the agent with you.
Contact sales. Billing: Custom quote. Free plan: not verified.
Features compared
Confirmed on the vendor’s site Vendor says it is not offered Not verified (not the same as no)
| Feature | Vapi | Retell AI | Bland AI | Synthflow | PolyAI |
|---|---|---|---|---|---|
| Phone calls | Yes | Yes | Yes | Yes | Yes |
| Voice conversation | Yes | Yes | Yes | Yes | Yes |
| Developer API | Yes | Yes | Yes | Yes | Yes |
| Integrations | Yes | Yes | Yes | Yes | Yes |
| Books appointments | Yes | Yes | Yes | Yes | Not verified |
| Multiple languages | Yes | Yes | Yes | Yes | Yes |
Questions
Which Vapi alternative has the simplest pricing?
Retell AI and Bland AI both publish per-minute rates that include more of the call's components than Vapi's hosting fee. Retell AI lists every component; Bland AI's rate includes the model and voices but not telephony.
Sources and method
- Vapi, checked 16 October 2026: pricing page, product page, docs, docs
- Retell AI, checked 16 October 2026: pricing page, product page, docs
- Bland AI, checked 16 October 2026: pricing page, product page, docs, docs (llms.txt)
- Synthflow, checked 16 October 2026: pricing page, product page, docs (sales-led pricing), docs (pricing scoped with sales)
- PolyAI, checked 16 October 2026: pricing page, product page, product page, docs
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