Latenode

Automate Slack messaging with OpenAI GPT-3 completions

This template starts when someone mentions your Slack bot, sends the message text to ChatGPT, and posts the reply in that channel.

Use it for status updates or a channel assistant. Put the Slack bot token on the Slack connection. ChatGPT is Latenode AI, so you do not paste an OpenAI key.

Updated Sep 16, 2026Est. run: 17sEst. cost: $0.0011
How Latenode estimates time and cost

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

What this template does

  • Replies to Slack mentions with ChatGPT
  • Starts when someone tags the bot
  • Posts the answer in the same channel
  • Uses Latenode ChatGPT, so you do not paste an OpenAI key

How it works

1
Trigger

Slack mention

The scenario starts when someone mentions the bot in a Slack channel it can read.

2
AI

Write the reply

ChatGPT reads the mention text and returns a response. ChatGPT is Latenode AI, so you do not paste an OpenAI key.

3
Action

Post in Slack

Slack sends that reply to the same channel.

Setup guide

1

Connect Slack

Add a Slack connection and paste the bot token there. Invite the bot to the channel it should read and post in.

2

Watch mentions

Add a Slack trigger for new mentions so the run starts when someone tags the bot.

3

Reply with ChatGPT

Send the mention text to ChatGPT with the tone you want, then post a public channel message using the channel id from the trigger. ChatGPT is a Latenode AI node. You do not paste an OpenAI key.

Requirements

A Slack bot token stored on the Slack connection
A channel the bot can read and post in

FAQ

Common questions about this template

Each run uses credits on your Latenode plan. We charge for processing time (1 credit = 30 seconds). Your actual cost depends on your plan and how long the run takes. See pricing plans for plans and how credits work. Plug-and-Play AI nodes are billed separately.