This template receives WhatsApp Business Cloud callbacks on a Latenode webhook, reads the message type in JavaScript, and replies with ChatGPT. Voice notes are downloaded and transcribed with Latenode speech-to-text.
Images and PDFs are downloaded first so ChatGPT can work from text or a short description. Connect WhatsApp Business Cloud and put the Cloud API token on that connection. ChatGPT is a Latenode AI step, so you do not paste an OpenAI key.
Latenode bills workflow runtime in CPU seconds. The first 10,000 CPU seconds are free each month, then usage follows pay-as-you-go CPU-second pricing. Plug-and-Play (PnP) AI nodes are billed separately—each PnP token is $1 USD, charged pay-as-you-go at vendor cost plus a small processing fee, with no API keys required.
Full pricing — how CPU seconds work →Workflow preview
The scenario starts when WhatsApp Business Cloud POSTs an incoming message to your webhook.
JavaScript takes the sender, message type, text, and media id. Skip status callbacks that are not customer messages.
WhatsApp Business Cloud downloads voice, image, and PDF files. Speech-to-text turns voice notes into text.
ChatGPT reads the text, transcript, or extracted PDF content and returns the answer.
WhatsApp Business Cloud sends the reply to that customer number.
Add a webhook trigger and copy its URL. In Meta Business Manager, set that URL as the WhatsApp Cloud API callback.
Add a WhatsApp Business Cloud connection and paste your Cloud API token there. Use a phone number that is registered for Cloud API.
In JavaScript, read sender, type, text, and media id. Skip status callbacks. Download files for voice, image, and PDF payloads.
Transcribe voice with Latenode speech-to-text. Send text, transcript, or extracted PDF content to ChatGPT, then send the answer with WhatsApp. ChatGPT is a Latenode AI node. You do not paste an OpenAI key.
FAQ
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