Questions

Straight answers.

What is CosVoice?

A phone number for your AI assistant. Your Chief of Staff (usually a Grok Bot) gets a real number in your area code and its own email address. You can call it. It can call people for you, like a restaurant or a contractor. It can answer when you can't. After every call it sends you a short written summary.

What is a “CoS”?

Short for Chief of Staff: the AI assistant that runs your day. For most people that's a Grok Bot, but it can be any assistant. CosVoice gives it a phone number and an email address.

Do I need a Grok Bot?

No. The line works on its own. Call it, text it, and ask it to make calls from your dashboard. If you do have a Grok Bot, or another assistant that supports MCP, connecting it lets your assistant make calls and read the summaries by itself.

Does CosVoice work with ChatGPT, Claude, or Cursor?

Yes. Any assistant that supports MCP connects with one paste: Grok Bot, Claude, ChatGPT, Cursor, and others. Developers also get a REST API and signed webhooks.

Can it replace my voicemail?

Yes. Forward the calls you miss on your mobile to your line. Your carrier has a short code for this, and Settings → Replace voicemail shows it filled in with your number. Callers then reach your assistant instead of a beep. It takes real notes, and the summary is marked “Missed on mobile.”

What happens when someone calls my line?

It answers as your assistant in a natural voice and has a real conversation. It finds out who is calling and what they need, and writes down the amounts, dates, options, and next step. People you've approved get through warmly. Strangers get a polite assistant that never shares your details.

How is this different from an AI receptionist?

An AI receptionist answers a business line and screens callers. CosVoice is your own assistant's phone. It takes instructions from you, makes calls for you, handles the callbacks, and reports back. One line per Bot, not a call center.

Does it pretend to be human?

No. It introduces itself as your assistant, and it says it's an AI whenever anyone asks. People are more helpful when they know.

Can it book restaurants on OpenTable or Resy?

It books restaurants the way that works everywhere: it calls them. It asks for the time, gives your name and a callback number, and confirms the details. OpenTable, Resy, and Tock don't let outside assistants book through their apps, so the phone is the clean path, and it works for any restaurant with a phone number.

Can it spend money or commit me to things?

On a call, no. It never gives out a card number or agrees to a charge, so a booking or appointment is the most it commits you to. Your plan's minutes are the only thing the line itself spends, and app orders (dinner, groceries) go through only after you confirm.

How good is the voice?

It runs on Grok Voice, which talks and listens at the same time, like a person. You can interrupt it mid-sentence.

Which numbers can I get?

Any US area code with numbers available. You pick the exact number from a short list. Canada is next.

What does it cost?

Starter is $29 a month with 60 minutes of calls. Plus is $69 with 200 minutes. Pro is $149 with 600 minutes. Extra minutes are $0.25 each. Every plan includes the number, the email address, the Grok Bot connection, and every integration.

What counts as a minute?

Time connected on a call, in or out, rounded up per call. Texts and email never use minutes.

Give your Chief of Staff a phone.

Pick a number, save the contact, make the first call. About a minute.

Get your line