Last updated 08-11-2026
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PrankGPT
Pick a US phone number, choose a voice, type a prompt, and PrankGPT places an automated call where the AI carries the conversation you scripted. The homepage offers two personas: Marv, pitched as an evil prankbot, and Zephyr, a Gen Z voice powered by Rime.ai.
Most prank call apps play a fixed recording. PrankGPT routes the dialogue through large language models on the open-source Vocode stack, so the bot can riff on your instructions instead of replaying one canned line. Voices come from Rime Labs and Google Cloud, which is why the site reads more like a voice-AI demo than a traditional gag hotline.
Friends pranking friends are the obvious use case, but creators testing short-form skits or voice agents also show up in the Product Hunt listing. The interface is a single page with no account gate, which keeps the barrier low for one-off jokes.
Two selectable voices on the homepage: Marv and Zephyr
Users enter a custom text prompt that instructs what the AI should discuss on the call
Calls target United States phone numbers via the country picker on prankgpt.com
Built on the open-source Vocode Python library linked from the site footer
Voice synthesis powered by Rime Labs and Google Cloud according to the homepage credits
Single-page flow with no account required to start a call
Custom prompts let the AI improvise instead of playing a fixed recording
Built on the open-source Vocode library with credits linked on the site
Two distinct voice personas for different prank styles
Only US phone numbers are supported in the homepage country picker
Just two voice options with no tone or speed controls documented
No pricing page or usage limits published on prankgpt.com
Ethical misuse risk because anyone can script arbitrary call content
What is PrankGPT?
PrankGPT is a fun prank call generator that dials a US phone number and lets an AI voice hold a conversation based on your prompt. PrankGPT uses the Vocode open-source stack with voices from Rime Labs and Google Cloud.
Is PrankGPT free to use?
PrankGPT is free to try from the homepage with no signup form shown on prankgpt.com. The site does not publish paid tiers or per-call pricing on the marketing page.
Which phone numbers does PrankGPT support?
PrankGPT's interface defaults to United States numbers through a country picker on the homepage. PrankGPT asks you to enter the recipient's phone number before starting a call.
What voices can I pick on PrankGPT?
PrankGPT offers two voices: Marv, described as an evil prankbot, and Zephyr, a Gen Z persona credited to Rime.ai. You select the voice before entering your prompt and starting the call.
How do I control what PrankGPT says?
PrankGPT includes a prompt field where you type instructions for the AI conversation topic. The bot uses that prompt to guide what it discusses once the call connects.
What technology powers PrankGPT?
PrankGPT is built with the Vocode open-source library for voice LLM apps, linked from the site footer. PrankGPT credits Rime Labs and Google Cloud for the synthetic voices used on calls.
Do I need an account for PrankGPT?
No account signup appears on the PrankGPT homepage. You enter a phone number, pick a voice, write a prompt, and click Start call to launch the prank from your browser.