SmartAlex - Voice AI for Your Business Phone

Everything your voice agent needs.

Describe it, teach it, hear it, ship it. All in one place.

Write the playbook

Describe how calls should go. Alex follows multi-step workflows, every time.

Greet the caller, look up their order, fix the issue, then book a callback if the line is busy.

Knowledge base

Hand your agent the docs you already have. Plain text, Markdown, PDFs and more.

Drop docs to teach your agentPDF · Markdown · plain text

Returns_Policy.pdf

Help_Center.pdf72%

Try it live

Talk to your agent in the browser. Make a change, hear it that second.

PreviewLive

Hi, you've reached Sunrise Dental. How can I help?

0:04

A voice for every language

Natural voices that never sound synthetic, in the language your callers speak.

Any voice,
any language.

Natural, never synthetic.

🇿🇦🇬🇧🇺🇸🇪🇸🇫🇷🇩🇪🇵🇹🇮🇹🇳🇱🇸🇦+30 more

Aria

Emma

James

Marcus

Listen back

Play back any call, start to finish. Hear exactly what your customers heard.

book_appointment · 0:28

"You're all set for Thursday at 7."0:18 / 0:47

Connect your tools

Plug in over MCP, or wire in your own APIs. When a call needs a person, Alex hands it off.

mcp · 40+ connectors

Custom guardrails

Decide what your agent will and won't do. It stays inside the lines, on every call.

Can you read me the card number on file?

I can't read that back. Let me verify your identity another way.

No PII

Your own number

Point your existing number at Alex over SIP. Works with any provider.

Acme Support · Agent+1 (415) 555-0132

Run your phone team from the AI you already use.

Works with Claude, ChatGPT, Codex and Cursor. Ask in plain English and SmartAlex does the work.

Example chats. The names and numbers are made up.

Install the plugin

Built for the phone.

One agent for every call, from the first ring to the follow-up.

Answers your phone calls
Every call picked up, the caller qualified, the lead logged.
Calls your list
Upload your customer list and it rings every name.
Answers your website calls
Greets visitors the moment they land, and books them in.
Trained in minutes
Point it at your website, a document, or a tool.
Connects to your stack
Your calendar, CRM, number, WhatsApp and more.
Every language
75+ languages, all natural, never synthetic.
Works around the clock
Day and night, weekends and holidays, never off sick.
Stays on the rails
Your guardrails, honoured on every single call.
Reports back
Recordings, transcripts and call summaries, all in your dashboard.

See everything it can do

Common questions

What does SmartAlex do?

SmartAlex is voice AI for your business phone. Its agents answer your calls, including the ones that come in through your website, and call your customer list for you. On every call the agent picks up, answers questions about your business and qualifies the caller. It books the meeting into your calendar and leaves you a written summary of the call.

How much does SmartAlex cost?

The Professional plan is $99 a month and includes the dashboard, analytics and support, plus 250 call minutes once off per agent. Those minutes are a one-time allocation rather than a monthly allowance, so they do not refresh each month. Once they are used, calls start at $0.01 a minute and work out at about $0.05 a minute on average. Phone numbers are $1 a month each. There are no setup fees and no contracts, and you can cancel at any time.

How long does it take to set up an AI voice agent?

Under 60 seconds. You describe what you want the agent to do in plain English, point it at your website or a document so it can learn your business, and it is ready to take calls. No engineering work is required.

Which languages does SmartAlex speak?

75+ languages, including English, Spanish, French, German, Portuguese and Chinese. The agent works out which language the caller is speaking and answers naturally in it.

Is there a free trial?

Yes. You can sign up for a free account and try your agent in the browser without a card. Add a card to start a 7-day phone-call trial. Paid billing starts at the end of the 7 days, and cancelling before then avoids a charge. If your trial minutes run out sooner, calls pause until your paid plan starts.

Can SmartAlex connect to my calendar and my CRM?

Yes. SmartAlex connects directly to Google Workspace, including Calendar, Drive, Sheets and Meet, as well as Slack, Stripe and Shopify. Anything else connects through the REST API, through Zapier, or through the public MCP server that lets AI assistants talk to SmartAlex directly.

What happens if the agent cannot answer a question?

It follows the guardrails you set for it. It can take a message and text it to you, book a callback for later, or transfer the call straight through to a person on your team.

Is my call data secure?

Yes. SmartAlex is aligned to GDPR and CCPA, and call data is encrypted both in transit and at rest. The platform is built by THERCSGROUP Pte Ltd, a company registered in Singapore.