Can you build on the platform account we already have?

Yes. If you're already on Vapi, Retell, ElevenLabs, Synthflow or Bland, we can build in your account.

What does a custom build mean?

No platform in the middle: we connect speech recognition, a language model and a voice ourselves. It's more work up front and gives you more control over cost per minute, response speed and where call data lives.

On the platform you choose, on our infrastructure, or on your own systems. We'll recommend one after reading what you need.

It depends on what the agent does and where it runs. You'll get options with a price for each after we read your request.

How do we know it's good enough?

You set the bar before we start. The test calls check it, and you get the results before launch, not a demo of one good call.

What happens after launch?

Real callers find things no test did. We review calls, add what we learn to the tests, and Murusai watches every call for floods and abuse.

Murusai

Agent development

A voice agent that clears the bar you set, and the proof that it does.

Getting an AI agent running is easy. Getting it good enough is the hard part. We build your voice agent to a performance bar you set, prove it clears that bar before launch, and protect it once it's live.

Get a quote

Build, prove, protect.

Built to your bar

You tell us what good enough means: the jobs it does, how often it gets them right, what it must never do. That's the spec we build to.

Proven before launch

Every job has test calls: ordinary, messy and hostile. They run after every change, so fixing one thing can't quietly break another, and you see the results before it goes live.

Built as a system, not a prompt

One model talks. Small, focused ones classify, supervise and steer around it, and policies live in a knowledge store you can add to in minutes. New situations become entries, not prompt rewrites, so a fix in one place stays in one place.

Protected after

It launches with a security and compliance pass, and Murusai watching every call for floods and abuse.

On a platform

Vapi, Retell, ElevenLabs, Synthflow or Bland. The fastest route, on their pricing, and easy for your team to change later.

Or built from scratch

Our own pipeline: speech-to-text, the language model and the voice, wired together. More control over cost, speed and where the data goes, hosted by us or on your own systems.

We'll tell you which

The trade-offs in plain words, with rough costs for each, before you commit to anything.

Fixable after launch

Real callers find things no test did. Because policy, routing and product knowledge are separate pieces, adding a case is a small change that gets re-tested, not a new agent.

How it goes.

1
Tell us what it should do
The form below. The most useful answer is what good enough looks like to you.
2
Options and a quote
Within one business day: questions, the options that fit, and a price for each.
3
Build and test
We build it, write the test calls, and run them until it clears your bar.
4
Launch and watch
It goes live on your number with its test results, and we keep an eye on it.

Who it's for.

Businesses that want an AI receptionist or caller and don't want to build it themselves
Teams that tried a platform, got it running, and couldn't get it good enough
Anyone who needs it on their own infrastructure for cost, speed or data reasons
Agencies that need a build partner for client work

Get a quote.

Tell us what the agent should do and what good enough looks like. A person reads every request and replies within one business day.

Read first, if you like

Questions people ask first.

Can you build on the platform account we already have?: Yes. If you're already on Vapi, Retell, ElevenLabs, Synthflow or Bland, we can build in your account.
What does a custom build mean?: No platform in the middle: we connect speech recognition, a language model and a voice ourselves. It's more work up front and gives you more control over cost per minute, response speed and where call data lives.
Where does it run?: On the platform you choose, on our infrastructure, or on your own systems. We'll recommend one after reading what you need.
What does it cost?: It depends on what the agent does and where it runs. You'll get options with a price for each after we read your request.
How do we know it's good enough?: You set the bar before we start. The test calls check it, and you get the results before launch, not a demo of one good call.
What happens after launch?: Real callers find things no test did. We review calls, add what we learn to the tests, and Murusai watches every call for floods and abuse.