> ## Documentation Index
> Fetch the complete documentation index at: https://docs.kodus.io/llms.txt
> Use this file to discover all available pages before exploring further.

# AI Model Security

## Models Used

Kodus uses the following language models for code analysis:

* **GPT-4o and derivatives** (OpenAI)
* **Gemini 1.5 Pro and derivatives** (Google)
* **Claude 3.5 Sonnet and derivatives** (Anthropic)

## Data Handling

Your code is processed temporarily and never used for training:

* Data retained only during the review session
* Immediately discarded after completion
* Never used to train or improve models
* Privacy maintained per provider agreements

## Terms of Use for Each Model

* **GPT-4o and derivatives**: [GPT-4o Terms of Use](https://openai.com/enterprise-privacy/)
* **Gemini 1.5 Pro and derivatives**: [Gemini 1.5 Pro Terms of Use](https://ai.google.dev/gemini-api/terms)
* **Claude 3.5 Sonnet and derivatives**: [Claude 3.5 Sonnet Terms of Use](https://support.anthropic.com/en/articles/7996885-how-do-you-use-personal-data-in-model-training)

## Security Measures

* **Encryption**: Data encrypted in transit and at rest
* **Data Isolation**: Models don't store or retain data after processing
* **Controlled Access**: Strict access controls for authorized personnel only (see [Workspace Roles](/how_to_use/en/workspace_roles))
* **Regular Audits**: Periodic security audits for compliance
* **Security Updates**: Regular patches and updates

## Self-hosted telemetry

If you run Kodus self-hosted, each instance sends one anonymous daily
heartbeat to `telemetry.kodus.io` with aggregated counters and runtime
metadata — never code, identities, or anything that could trace back to
your users. You can inspect the exact payload with `yarn telemetry:preview`
or disable it with `KODUS_TELEMETRY_DISABLED=true`. Full schema, retention
policy, and source code links are documented in
[Anonymous Telemetry](/how_to_deploy/en/deploy_kodus/telemetry).

Questions? Contact our support team or join [Discord](https://discord.gg/TFZBRk9fT6).