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Japanese-to-English review sentiment analysis with GPT and Telegram alerts

AsukaAsuka
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2/3/2026
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Who is this for

This template is designed for e-commerce businesses, customer support teams, and marketing professionals who need to monitor and analyze customer reviews at scale. It's especially useful for teams dealing with multilingual reviews (Japanese to English) and those who want instant alerts for critical feedback.

What it does

This workflow automatically processes customer reviews stored in Google Sheets using OpenAI GPT. For each review, it performs:

  • Translation from Japanese to English
  • Sentiment analysis with a score from -1.0 to +1.0
  • Importance classification (High/Medium/Low) based on urgency
  • Category tagging (Quality, Price, Shipping, Support, Features, Usability, Other)
  • Key phrase extraction for quick summary

Results are written back to the spreadsheet, and Telegram notifications are sent based on priority level.

How to set up

  1. Connect your Google Sheets account and select your review spreadsheet
  2. Configure OpenAI API credentials
  3. Set up Telegram Bot and enter your Chat ID in both notification nodes
  4. Adjust the schedule trigger interval as needed

Requirements

  • Google Sheets with columns: ReviewID, Keyword (review text), ProcessStatus
  • OpenAI API key
  • Telegram Bot Token and Chat ID

How to customize

  • Modify the AI prompt in "AI Agent - Review Analysis" to change analysis criteria or add new fields
  • Adjust the sentiment threshold (-0.5) in "Check Importance & Sentiment" node
  • Customize notification messages in Telegram nodes
  • Change the source/target language by editing the prompt

Japanese to English Review Sentiment Analysis with GPT and Telegram Alerts

This n8n workflow automates the process of analyzing Japanese customer reviews for sentiment, translating them to English, and alerting a Telegram channel for negative feedback. It's designed to help businesses quickly identify and respond to critical customer feedback from a Google Sheet.

What it does

  1. Triggers on a Schedule: The workflow runs periodically (e.g., every 5 minutes) to check for new reviews.
  2. Reads Google Sheet: It fetches new rows from a specified Google Sheet, likely containing customer reviews in Japanese.
  3. Processes Reviews with AI Agent:
    • It uses an OpenAI Chat Model (GPT) as an AI Agent to perform two main tasks:
      • Translate: Translates the Japanese review text into English.
      • Sentiment Analysis: Analyzes the English translation to determine if the sentiment is positive, neutral, or negative.
  4. Filters for Negative Sentiment: It checks the sentiment analysis result.
  5. Alerts via Telegram: If the sentiment is identified as "Negative", it sends a detailed alert message to a configured Telegram chat, including the original Japanese review, its English translation, and the detected sentiment.
  6. Updates Google Sheet (Implicit): Although not explicitly shown in the provided JSON, a typical extension of this workflow would be to mark processed rows in the Google Sheet to avoid re-processing or to add the sentiment/translation results back to the sheet.

Prerequisites/Requirements

  • n8n Instance: A running n8n instance.
  • Google Sheets Account: Access to a Google Sheet containing customer reviews.
  • OpenAI API Key: An API key for OpenAI to use the GPT model for translation and sentiment analysis.
  • Telegram Bot Token and Chat ID: A Telegram bot token and the chat ID of the channel or group where alerts should be sent.

Setup/Usage

  1. Import the Workflow: Import the provided JSON into your n8n instance.
  2. Configure Credentials:
    • Google Sheets: Set up a Google Sheets credential to allow n8n to read data from your spreadsheet.
    • OpenAI: Configure an OpenAI credential with your API key.
    • Telegram: Set up a Telegram credential with your bot token. You will also need to find your Telegram Chat ID.
  3. Configure Nodes:
    • Schedule Trigger (Node 839): Adjust the schedule interval as needed (e.g., every 5 minutes).
    • Google Sheets (Node 18):
      • Specify the Spreadsheet ID and Sheet Name where your reviews are located.
      • Configure the operation to "Read" and select the appropriate range or filter to get new reviews.
    • AI Agent (Node 1119) & OpenAI Chat Model (Node 1153): These nodes are pre-configured to use the OpenAI Chat Model for translation and sentiment analysis. Ensure your OpenAI credential is selected. The prompt within the AI Agent will instruct it to translate and analyze sentiment.
    • If (Node 20): This node checks the output of the AI Agent. Ensure the condition correctly evaluates the sentiment (e.g., {{ $json.sentiment === "Negative" }}).
    • Telegram (Node 49):
      • Select your Telegram credential.
      • Enter the Chat ID of the Telegram channel or group.
      • Customize the message text to include relevant review details (original Japanese, English translation, sentiment).
    • Edit Fields (Set) (Node 38): This node is likely used to prepare the data for the Telegram message or for subsequent steps. Review its configuration to ensure it sets the desired fields.
  4. Activate the Workflow: Once all configurations are complete, activate the workflow. It will start running automatically according to the defined schedule.

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