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Privacy Policy

Last updated: February 2025

1. Introduction

Teichat ("we", "our", "us") is an AI chat service. This Privacy Policy explains how we collect, use, and protect your information when you use our service.

2. Information We Collect

Account Information

When you create an account, we collect:

  • Email address (required)
  • Display name (optional)
  • Password (stored securely in hashed form, never in plain text)

Chat Data

When you use the service, we store:

  • Your conversation messages and AI responses
  • Chat titles and timestamps
  • The AI model used for each response
  • Web search queries and results when you use the search tool

Usage Data

We track the number of messages you send over a rolling 7-day window for the purpose of enforcing usage limits. This includes the model used and the timestamp of each request.

3. How We Use Your Information

Your information is used to:

  • Authenticate you and maintain your session
  • Store and display your chat history
  • Provide AI-generated responses to your messages
  • Enforce usage limits to ensure fair access

4. Third-Party Services

To generate AI responses, your messages are sent to third-party AI model providers via their APIs. These providers process your messages to generate responses. We recommend reviewing the privacy policies of the respective AI providers.

When you use the web search feature, your search queries are sent to an external search service to retrieve results.

5. Data Storage and Security

Your data is stored securely on our servers. Passwords are hashed using industry-standard algorithms and are never stored in plain text. Sessions are managed using secure, signed tokens. We take reasonable measures to protect your data from unauthorized access, alteration, or destruction.

6. Data Deletion

You can delete individual chats and their associated messages at any time through the application interface. To request full account deletion, please contact us.

7. Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be reflected on this page with an updated revision date.

8. Contact

If you have questions about this Privacy Policy, please contact us.