Retell AI alternatives, for people who would rather not build the agent themselves.

What Retell AI is, and when it is the right call

Retell AI is a voice agent platform for phone call automation. Its pay-as-you-go plan lists $0.07 to $0.31 per minute for voice agents, with $10 in free credits, and custom pricing for enterprise (as published on retellai.com/pricing, checked September 29, 2026).

The range is wide because the per-minute price is built from parts. Retell AI lists its voice infrastructure, the text to speech voice, the language model and the telephony as separate lines, so the rate you pay depends on what you choose.

That is a fair model for a builder. If you have someone who enjoys designing call flows, testing them and tuning them, Retell AI is a good place to do it, and you should probably stay. Keep reading if one of these sounds more like you:

• Nobody on your team wants to build it. The platform is ready. The agent is not, until someone designs it.
• You want one number, not a stack of per-minute parts. You would rather talk about what it does than which model it runs.
• You need more than the phone. The website, the booking page and the follow-up texts all have to work with the agent.

What to look for in an alternative

• Who builds it, and who fixes it. Minutes are only part of the cost. The hours someone spends building and fixing the agent count too.
• How the price is made up. Per minute, per plan or per contract. Compare the total for your call volume, not the headline rate.
• What it connects to. Your line, calendar, CRM and text follow-up, working together.
• How you test it before you commit. A free tier, credits, or a live agent you can call.

To size the problem first, run your own numbers through the missed call calculator.

The nine alternatives

1. SyX Solutions: built and run for you

SyX Solutions is a design, engineering and voice AI partner. We design the agent around your services, area, hours and calendar, connect it to your phone line and CRM, and keep tuning it on real calls after launch. You never pick a model or a voice line item.

It is a done-for-you partner build, scoped on a 30 minute call. You hear the number on that call. To hear the work before that, call (832) 660-0658, which is our own agent answering our own line.

• Best for: businesses already getting more calls than they can answer, with nobody free to build an agent.
• Pricing: scoped on a 30 minute call. There is no self-serve plan.
• Pro: no building, no maintenance, and one team for the agent, the website and the follow-up.
• Con: not self-serve, and a bigger commitment up front than loading credits into a platform.

See how our voice agents work.

2. Synthflow

Synthflow describes itself as an end-to-end voice AI platform for enterprise call automation.

• Best for: large call operations that want an enterprise platform.
• Pricing: enterprise contracts start at $30,000 a year, with the final price custom (as published on synthflow.ai/pricing, checked September 29, 2026).
• Pro: built for scale, with pricing scoped to your volume and integrations.
• Con: a large first step for a small business. More in our Synthflow alternatives comparison.

3. Vapi

Vapi calls itself the platform for developers creating conversational voice AI. It is the closest match to Retell AI in who it is for.

• Best for: teams with an engineer who wants full control.
• Pricing: $0.05 per minute for Vapi hosting to start, a Core plan at $29 a month, a Pro plan with a $999 a month minimum, and extra concurrency at $10 per line per month. Telephony fees are listed separately by provider (as published on vapi.ai/pricing, checked September 29, 2026).
• Pro: flexible and cheap to start.
• Con: the same build-it-yourself model as Retell AI.

4. Bland

Bland describes itself as an enterprise voice AI platform for phone agents, with self-hosted models and enterprise compliance.

• Best for: regulated or high-volume teams.
• Pricing: the Start plan is $0.14 per minute of talk time with no platform fee. The Build plan is $0.12 per minute with a $299 a month platform fee. Enterprise is contracted to your volume (as published on bland.ai/pricing, checked September 29, 2026).
• Pro: one per-minute talk rate instead of a stack of parts.
• Con: still a platform you build on.

5. Voiceflow

Voiceflow calls itself an AI agent platform for customer experience automation, covering chat and voice agents.

• Best for: customer support teams working across chat and voice.
• Pricing: no figures were shown on its pricing page when we checked on September 29, 2026; it asks you to request pricing. See voiceflow.com/pricing.
• Pro: chat and voice in one builder.
• Con: you design and maintain every conversation.

6. Phonely

Phonely sells AI phone answering for businesses: answer calls, book appointments and handle routine questions.

• Best for: small businesses that want simple answering and will set it up themselves.
• Pricing: a free tier at $0, Starter at $50 a month billed monthly or $33 a month billed annually, and Professional at $150 a month billed monthly or $100 a month billed annually (as published on phonely.ai/pricing, checked September 29, 2026).
• Pro: you can try it for nothing.
• Con: the setup and upkeep are yours.

7. Whippy AI

Whippy AI is an omnichannel inbox: SMS, email, WhatsApp and calling in one place, with automation on top.

• Best for: teams that work leads by text as much as by phone.
• Pricing: Lite at $200 a month, then Essentials at $400, Growth at $800, Premium at $1,500 and Professional at $3,000 a month (as published on whippy.ai/pricing, checked September 29, 2026).
• Pro: every channel in one inbox.
• Con: a platform your team still has to set up and run.

8. Cresta

Cresta is built for contact centers, with human agents and AI agents on one platform.

• Best for: contact centers with large agent teams.
• Pricing: no prices on cresta.com when we checked on September 29, 2026. It is sold through their sales team.
• Pro: made for large operations.
• Con: far more than a small service business needs.

9. A freelancer building on Retell AI or Vapi

You keep the platform and pay someone else to build on it.

• Best for: owners with a developer they already trust.
• Pricing: quoted by the individual, plus the platform’s usage fees. Rates vary too widely to publish a range.
• Pro: custom work without hiring.
• Con: every change is another invoice, and support depends on one person’s calendar.

Retell AI vs SyX Solutions

Choose Retell AI if you want to build: pick the voice, the model and the telephony, design the flows, and pay only for the minutes you use. It rewards people who enjoy that work.

Choose SyX Solutions if you want the result instead: calls answered, questions handled, jobs booked and every lead saved to your CRM, with a team that stays on it after launch. Call (832) 660-0658 and judge the agent for yourself.