> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.chrisp.chat/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Which AI models does Hugo support

Hugo uses several best-in-class AI models to power its features. Depending on your needs, you can choose the model that fits your use case best.

## Available Models

### OpenAI GPT 5 & GPT 5.1

The latest generation of OpenAI models. GPT 5 and GPT 5.1 offer excellent general-purpose performance across all Hugo AI features, including conversation summarization, reply suggestions, and knowledge base search.

### Anthropic Claude 4.5 Sonnet & Haiku

Claude 4.5 Sonnet provides high-quality, nuanced responses and is great for complex tasks. Claude 4.5 Haiku is a lighter, faster variant ideal for quick interactions where speed matters most.

### Mistral Large & Medium

Mistral models are built in Europe and offer strong multilingual capabilities. Mistral Large is suited for demanding tasks, while Mistral Medium provides a good balance of performance and speed. Mistral is a great choice if you need ****EU data residency****, as the models are hosted in Europe.

### Crisp Internal Model (Self-Hosted by Crisp)

This model is developed and hosted entirely by Crisp on ****Scaleway infrastructure in Paris, France****. It is the best option if your organization requires ****maximum privacy and compliance with EU regulations**** (such as GDPR), since no data leaves Crisp's own servers.

### Google Gemini Technical Preview

Google Gemini is available as a technical preview. It provides strong performance and is continuously being improved by Google. Note that this model is still in preview and may evolve over time.

## Pricing

Most models are equivalent in terms of pricing. You can switch between models without worrying about significant cost differences.

## Privacy & EU Compliance

If privacy or EU compliance is a priority for your organization, we recommend using one of the following models:

* ****Crisp Internal Model**** — Fully hosted by Crisp on Scaleway in Paris. No data is sent to any third-party AI provider.
* ****Mistral**** — European-built models with data processed in Europe.

Both options ensure that your data stays within the EU and complies with European data protection regulations.

### Built-in Models Trained by Crisp

In addition to the third-party AI models listed above, Hugo also relies on built-in models that were trained internally by Crisp. These models run alongside the main AI model you choose and handle critical tasks automatically:

* Guardrails / Hallucination Mitigation: A dedicated model checks Hugo's responses to detect and prevent hallucinations, ensuring that answers remain accurate and grounded in your knowledge base content.
* Spam Fighting: A built-in model identifies and filters spam messages in real time, so that Hugo and your team can focus on genuine customer conversations.
* Escalation Decisions: A specialized model determines when a conversation should be escalated to a human agent, ensuring that complex or sensitive issues are handed off at the right moment.