Compared
7 Minds Systems vs Retell AI
Retell AI is a self-serve platform for building voice agents yourself, billed per minute. We build and run the AI employees for you, inside a branch, for a fixed monthly fee.
The verdict, in brief
- Choose 7 Minds Systems if
- You want the workforce built, run, and supervised for you, not a platform to operate.
- Choose Retell AI if
- You have the engineering time and want to build your own voice agents.
The table below holds the detail; the full verdict is at the end.
In short
When you want the workforce built and run for you rather than a platform to operate, 7 Minds Systems is the stronger choice: managed AI employees inside a branch, one fixed fee from £3,000 to set up and £700 a month, supervision included. Retell AI is the right call when you have the engineering time to build your own voice agents and its per-minute pricing, $0.07 to $0.31 a minute, suits you.
The longer read
Retell AI is a self-serve voice-agent platform: you sign up, build and configure the agent yourself, and pay per minute, published at $0.07 to $0.31 a minute for voice (their pricing page, checked 30 August 2026). It is a capable tool for a team with the time to build and maintain it. We are not a tool. We build the AI employees around your firm, run and supervise them, and wire them into a branch, for one fixed monthly fee. Choose Retell when you have the resources to build your own voice agents and per-minute economics suit you. Choose us when you want the workforce built, run, and answered for, without becoming its developer.
Side by side
| The question | 7 Minds Systems | Retell AI |
|---|---|---|
| What you are buying | A managed service. We build the AI employees, run them, and answer for how they behave. | A self-serve platform. You build the voice agent, configure it, and operate it yourself. |
| Who builds and maintains it | We do, trained on your services and voice, and we improve it every month. | You do, in their builder, and you maintain it as your services change. |
| How it is billed | One fixed monthly fee, from £3,000 to set up and £700 a month, that does not move with usage. | Per minute of voice, published at $0.07 to $0.31, so a busy month costs more. |
| Where it lives | Inside a branch built to convert, across web, chat, and email as well as voice. | Wherever you deploy it. The platform provides the voice agent; the site is your problem. |
| Who checks the output | We do, day to day, and a named person on your team owns every escalation it raises. | You do. Supervision is part of operating the platform yourself. |
| Regulated work | Scoped to what your regulator has published, with a person approving every regulated step. | General-purpose tooling. The controls and the compliance sign-off are yours to build. |
What you are buying
- 7 Minds Systems
- A managed service. We build the AI employees, run them, and answer for how they behave.
- Retell AI
- A self-serve platform. You build the voice agent, configure it, and operate it yourself.
Who builds and maintains it
- 7 Minds Systems
- We do, trained on your services and voice, and we improve it every month.
- Retell AI
- You do, in their builder, and you maintain it as your services change.
How it is billed
- 7 Minds Systems
- One fixed monthly fee, from £3,000 to set up and £700 a month, that does not move with usage.
- Retell AI
- Per minute of voice, published at $0.07 to $0.31, so a busy month costs more.
Where it lives
- 7 Minds Systems
- Inside a branch built to convert, across web, chat, and email as well as voice.
- Retell AI
- Wherever you deploy it. The platform provides the voice agent; the site is your problem.
Who checks the output
- 7 Minds Systems
- We do, day to day, and a named person on your team owns every escalation it raises.
- Retell AI
- You do. Supervision is part of operating the platform yourself.
Regulated work
- 7 Minds Systems
- Scoped to what your regulator has published, with a person approving every regulated step.
- Retell AI
- General-purpose tooling. The controls and the compliance sign-off are yours to build.
Sources, checked 30 August 2026
Every figure and product claim in the Retell AI column is taken from Retell AI's own pages on the date above. Pricing pages change, so we date what we quote and quote only what they publish.
Why the difference matters
The table, in plain words.
7 Minds Systems
AYou want the workforce built, run, and supervised for you, not a platform to operate.
Retell AI
BYou have the engineering time and want to build your own voice agents.
Two honest options, side by side.
A platform you build on, or staff we run
Retell AI is a well-made developer platform for building voice agents. You sign up, use its tools to configure an agent, connect your telephony, and deploy it, and for a team with engineering time and a clear use case it is a capable, flexible way to build voice AI. The difference is who does that work. Retell hands you the platform; the building, deploying, and maintaining are yours. We do not hand you a builder. We scope the role, build the AI employees around your firm, train them on your services and voice, and run them, so what you receive is a working workforce, not a toolkit to assemble one.
Per minute, or one fixed fee
Retell bills by usage: its published rate is $0.07 to $0.31 a minute for voice agents (their pricing page, checked 30 August 2026). That is efficient and transparent for a team that wants to meter its own spend, but it means the cost rises with the talking, and a busy month is a more expensive one. Our fee does not move with usage. An AI employee is from £3,000 to set up and £700 a month, supervision included, and the month the enquiries surge costs exactly what the quiet month costs. One model rewards you for building and metering it yourself; the other fixes the number and does the running for you.
Supervision is the part the platform leaves to you
With a self-serve platform, operating the agent well, watching what it says, catching the edge cases, keeping it current, and holding it to your compliance obligations, all lands on your team, and for a solicitor, a dental practice, or an accountant that is the part carrying the real risk. We run the supervision as part of the service: our team monitors the conversations and corrects the edge cases, a named person on your team owns every escalation, a written report each month sets out what the workforce handled, and in regulated work a person approves every regulated step before it goes out. Retell gives a capable team the controls; we are the team, so you do not have to be.
See what the difference is worth to you.
The ROI calculator puts your figures behind the table in two minutes: the enquiries a slow reply is costing, and what a branch would book to cover itself.
Who each one is for
Pick the one that fits the problem you actually have.
Choose 7 Minds Systems if
- You want the workforce built, run, and supervised for you, not a platform to operate.
- You would rather a fixed fee than a per-minute meter that a busy month runs up.
- You work in a regulated trade where an unchecked reply is a compliance problem.
- You want AI employees inside a branch, across web, chat, and email as well as voice.
Choose Retell AI if
- You have the engineering time and want to build your own voice agents.
- Per-minute pricing and full control over the build suit how you work.
- You are adding voice AI to an existing product or stack yourself.
- You want a platform to operate, not a service that operates it for you.
When Retell AI is the right call
If you have the engineering resources and you want to build, own, and operate your own voice agents, Retell AI is a capable, flexible platform, and per-minute pricing gives you clean control over what you spend. Teams adding voice AI to an existing product, or ones that genuinely want to hold the build themselves, are well served by it. We are built for the business that does not want to become a voice-AI developer: one that wants the employees scoped, built, supervised, and answered for, wired into a branch that converts, at a fee a busy month cannot inflate. If you want the toolkit, Retell is a good one; if you want the staff, that is us.
Questions
Before you decide.
Is 7 Minds Systems a voice-agent platform like Retell AI?
No. Retell AI is a self-serve platform you use to build and operate your own voice agents, billed per minute. We build the AI employees for you, train them on your services, run and supervise them, and wire them into a branch that also handles web, chat, and email. One is a tool you drive; the other is a managed workforce we drive for you.
How does per-minute pricing compare with your fixed fee?
Retell publishes $0.07 to $0.31 a minute for voice agents (their pricing page, checked 30 August 2026), so the cost rises with usage and a busy month costs more. A 7 Minds Systems AI employee is a fixed fee, from £3,000 to set up and £700 a month, with supervision included and no per-minute meter. Metered pricing rewards a team that builds and watches its own spend; a fixed fee suits a business that wants the number settled and the work run for it.
Do I need technical people to use Retell, and do I need them for you?
Retell is a builder, so getting real value from it generally means having the time and technical confidence to configure, deploy, and maintain the agent. With us you need neither: we scope the role, build and train the employees, and run them, and you approve how they speak and pick up what they escalate. The work of building and maintaining is ours, not yours.
Can your AI employees handle phone calls too, not just web and email?
Yes. Voice is one channel a managed AI employee can hold, alongside the web, chat, and email inside your branch. The difference from a voice-only platform is that we build and run the whole workforce across those channels for you, rather than handing you the tools to build a voice agent and leaving the rest to you.
The verdict
Retell AI is a platform you build voice agents on and meter by the minute; we build, run, and supervise the AI employees for you inside a branch, for a fixed fee. Choose Retell when you have the resources to own the build and want per-minute control. Choose us when you would rather have the staff than the toolkit, a busy month should not cost more, and someone else should answer for the output, which is what the fixed fee and the ROI calculator are for.
A full branch is live in twelve weeks, built in stages you review every week. Before you decide, put your own figures behind the comparison.
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