Get a line
Pick a number in your area code. About a minute, from $29 a month.
You can already phone ChatGPT and talk to it. What you cannot do is ask it to phone someone else: the tyre place for a price, the clinic to move an appointment, the landlord about the leak. CosVoice is the missing half. Connect it once, and ChatGPT can place a real call to a real business and tell you what was said.
Pick a number in your area code. About a minute, from $29 a month.
Open ChatGPT in a browser. In Settings, under Security and login, turn on Developer mode. Open Plugins, press the plus button, name it CosVoice, and paste https://cosvoice.com/mcp. A CosVoice page opens. Sign in and press Allow. There is no key to paste.
Say what you want in a sentence, including what to accept if the first answer is no. ChatGPT asks the line; the line does the talking.
Plain sentences. The line works out the conversation.
“Call Osteria Mozza and get a table for two on Friday at 7:30. Take 7:00 to 8:30 if that's gone.”
“Ring the dentist and move my Thursday cleaning to an afternoon next week.”
“Call the pharmacy and find out whether the refill is ready and what it costs.”
“Phone the landlord about the leak, and tell me what they said.”
ChatGPT gets an id straight away and the write-up when the call ends. Ask it to check back, or let CosVoice wake it when the call is done.
The person your line rang can ring back and reach the same assistant, with your standing instructions already in place.
The same line connects to an OpenAI dot, Claude, Cursor, or a Grok Bot. Connect whichever you happen to be using.
No. ChatGPT writes the brief; the CosVoice line holds the conversation in a natural voice, then hands back the outcome, the details, and the transcript.
You need a version of ChatGPT that lets you add a plugin by address. OpenAI calls the switch Developer mode. If yours does not have it, you can still place calls from your CosVoice dashboard and read the write-ups there.
No. Calls use your CosVoice plan's minutes, whichever assistant asked for them. Plans start at $29 a month with 100 minutes included.
No. The line never reads out a card number or agrees to a charge, so the most it commits you to is a booking or an appointment.
Also for Grok Bot, Meta's Muse, OpenAI dots, Claude, and anything you write yourself.
Free for 7 days with 10 minutes of calls. Then $29 a month unless you cancel.