The best Retell AI alternatives in 2026
Retell AI is a developer platform for building voice agents over the phone. If you’re evaluating other voice ai platforms, here are 4 options worth a look — with an honest note on when Retell AI is still the better fit.
Updated October 2026. Pricing is described by model because list prices change often — check each vendor for current plans.
What to look for in a Retell AI alternative
- No-code setup instead of building on an API
- An all-in per-minute price that includes the models
- Bring your own number and carrier
- Transcripts, inbox and human transfer included
- Chat, email and help center from the same knowledge
- 1.
ResolveX
Best all-in-one alternativeAI employees that answer chat, email and phone calls and complete work in 40+ apps — with a shared inbox, help center on your domain and a sales CRM included.
- No code: choose Arlo Receptionist, connect your number and go live.
- Calls land in a real inbox with transcripts, CRM updates and human transfer.
- All-in prepaid voice from $0.19 a minute, including the speech and language models.
Pricing: $15 per agent seat per month ($144 per year), 50 AI resolutions included, then $0.39 each. Voice from $0.19 per minute. 7-day free trial.
- 2.
Vapi
Vapi is an API platform for developers building voice AI agents.
Good fit when: You want full control over every model and are building voice into your own product.
Pricing model: Per-minute platform fee plus the model, voice and telephony providers you choose.
ResolveX vs Vapi - 3.
Bland AI
Bland AI is an API for automating phone calls with AI agents at scale.
Good fit when: You run very high-volume outbound calling built by your own developers.
Pricing model: Per-minute API pricing, with enterprise plans for volume.
ResolveX vs Bland AI - 4.
Synthflow
Synthflow is a no-code builder for AI phone agents, sold in minute-based plans.
Good fit when: You only need phone agents and nothing else from a customer platform.
Pricing model: Monthly plans that include a bucket of minutes, with overage.
ResolveX vs Synthflow
When to stay with Retell AI
- • You have engineers who want to build a custom voice product on an API.
Frequently asked questions
What is the best Retell AI alternative?
It depends on what you need. ResolveX is the strongest choice if you want AI employees, a shared inbox, help center, voice and a sales CRM in one product for $15 per seat. Vapi, Bland AI, Synthflow are also worth evaluating.
Is there a cheaper alternative to Retell AI?
ResolveX costs $15 per agent seat per month with 50 AI resolutions included and $0.39 per resolution after. Retell AI’s pricing model: Pay-as-you-go per minute, with model and telephony costs depending on configuration.
How do I switch from Retell AI?
Point your SIP trunk or carrier number at ResolveX and reuse your call script as the employee’s instructions.