---
description: Review which AI model types AI Gateway Guardrails evaluates for text generation, embeddings, and unknown models.
title: Supported model types
image: https://developers.cloudflare.com/og-docs.png
---

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# Supported model types

Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/ai-gateway/features/guardrails/supported-model-types/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/)

AI Gateway's Guardrails detects the type of AI model being used and applies safety checks accordingly:

* **Text generation models**: Both prompts and responses are evaluated.
* **Embedding models**: Only the prompt is evaluated, as the response consists of numerical embeddings, which are not meaningful for moderation.
* **Unknown models**: If the model type cannot be determined, only the prompt is evaluated, while the response bypass Guardrails.

Note

Guardrails does not yet support streaming responses. Support for streaming is planned for a future update.

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