Slack Auto Translator (JA ⇄ EN) with GPT-4o-mini
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Tomohiro Goto
Description
🧠 How it works
This workflow enables automatic translation in Slack using n8n and OpenAI.
When a user types /trans followed by text, n8n detects the language and replies with the translated version via Slack.
⚙️ Features
Detects the input language automatically
Translates between Japanese ↔ English using GPT-4o-mini (temperature 0.2 for stability)
Sends a quick “Translating...” acknowledgement to avoid Slack’s 3s timeout
Posts the translated text back to Slack (public or private selectable)
Supports overrides like en: こんにちは or ja: hello
💡 Perfect for
Global teams communicating in Japanese and English
Developers learning how to connect Slack + OpenAI + n8n
🧩 Notes
Use sticky notes inside the workflow for setup details.
Duplicate and modify it to support mentions, group messages, or other language pairs.
This workflow was created by Tomohiro Goto and shared publicly on the n8n community template library. n8nFind indexes it for discovery — the workflow remains the property of its original creator.