Privacy Policy — Lingogram in ChatGPT

Covers the Lingogram plugin for ChatGPT, which connects ChatGPT to your Lingogram dictionary.

Effective date: October 19, 2026 Last updated: October 19, 2026

This Privacy Policy explains what the plugin exchanges between ChatGPT and your Lingogram account, how long it is kept, and the choices you have. The words in your dictionary are the same ones the Lingogram extensions save; how they are stored is described in the extension policies, linked from the privacy page.

This English version at https://lingogram.ai/privacy/chatgpt/ is the authoritative one.

TL;DR

• The plugin works only after you sign in to Lingogram from ChatGPT and allow it.
• Lingogram never receives your ChatGPT conversation. It receives only what a tool call carries: a word to save and the sentence it appeared in, a review grade, or a request for your words.
• ChatGPT receives your saved words when you ask for them: each word, its definition, the sentence it came from, the title and link of the video, and when it is next due for review.
• The plugin server stores nothing itself. Words you save from ChatGPT join your Lingogram dictionary and are kept until you delete them or your account.
• Disconnect the plugin in ChatGPT at any time. Write to support@lingogram.ai to delete your account and data.

1. Information We Exchange

a. Connecting your account

When you connect the plugin, ChatGPT sends you to Lingogram to sign in and asks you to allow access to your vocabulary. We then keep a record of that connection: which ChatGPT connection it is, your Lingogram user ID, the permission you granted (chatgpt:vocab, your vocabulary only) and when it was created and last used. We do not receive your ChatGPT or OpenAI account details.

b. What ChatGPT sends to Lingogram

Only the arguments of the plugin's four tools:

• Get words due for review and Get recently saved words: how many words to return.
• Record a review grade: the word's identifier and a grade from 0 to 5.
• Save a word: the word or short phrase, and, if there is one, the exact sentence from the conversation where it appeared. The plugin is instructed to call this tool only when you ask to save a word and to send nothing else from the conversation. The word is saved with the source "ChatGPT".

c. What Lingogram sends to ChatGPT

Words from your own dictionary, each with its identifier, the word, its definition, the sentence you saved it with, the title and link of the video it came from when known, and the date it is next due for review; after a grade, the word's new review interval. ChatGPT shows these to you and uses them in the conversation.

d. Operational records

The plugin server logs one line per request with the method, the path, the response status and the duration. It logs no conversation text, no words, no tokens and no query strings. It also counts, in aggregate, how close requests come to the plugin's size and time limits, without their content.

2. How We Use Your Information

We use the information above only to provide the plugin: to show you your words in ChatGPT, to schedule your reviews, and to save the words you ask to save. We do not use it for advertising, and we do not sell it.

3. ChatGPT and OpenAI

The plugin runs inside ChatGPT, a service of OpenAI. Your conversation, and the words the plugin returns into it, are processed by OpenAI under OpenAI's privacy policy. Lingogram does not control how OpenAI processes conversations.

4. Data Retention and Deletion

• Words and review history saved or graded from ChatGPT are part of your Lingogram dictionary and are kept until you delete them or your account, as described in the extension policies.
• The connection record is kept while the connection is in use. A connection that is not used for 90 days stops working and is deleted. A connection that is revoked is deleted after 7 days. Single-use sign-in codes and replaced access keys are kept for 90 days so that a stolen copy can be detected, then deleted.
• Disconnect the plugin in ChatGPT's settings at any time; ChatGPT then stops calling Lingogram.
• To delete your account and data, email support@lingogram.ai from the address your account uses. We confirm deletion within 30 days.

5. Security

All traffic uses HTTPS. ChatGPT signs in with OAuth 2.1 and PKCE, and every request carries a short-lived access key limited to your vocabulary. The plugin server checks that key on every request and acts only as you.

6. Children's Privacy

The plugin is not directed to children under 13, and we do not knowingly collect information from them.

7. Changes to This Policy

We may update this Privacy Policy from time to time. Material changes will be reflected here with an updated "Last updated" date.

8. Contact

For any questions about this Privacy Policy, or to request deletion of your account and data, please email support@lingogram.ai.

Lingogram is an independent service and is not affiliated with, authorized, or endorsed by OpenAI.