# LLM Models and Rate Limiting

Published @ 01/07/2026 •
NovaSupport Team Product Team

NovaSupport uses advanced Large Language Models (LLMs) to power your AI agents. Understanding how these models work helps you optimize your agent's performance.

## Available Models

We support multiple LLM providers to give you flexibility:

- GPT-4: Best for complex reasoning and nuanced responses.
- GPT-3.5 Turbo: Fast and cost-effective for straightforward queries.
- Claude: Excellent for detailed, thoughtful responses.

## Choosing the Right Model

Consider these factors when selecting a model:

- Complexity: Complex products may benefit from GPT-4's reasoning.
- Volume: High-traffic sites might prefer GPT-3.5 for speed.
- Budget: Different models have different costs per interaction.

## Rate Limiting

To ensure fair usage and platform stability, we implement rate limits:

- Starter Plan: 100 messages per day
- Pro Plan: 1,000 messages per day
- Enterprise: Custom limits available

## What Happens at the Limit?

When you reach your daily limit, your agent will politely inform users that it's temporarily unavailable and offer to connect them with a human agent.

## Upgrading Your Limits

You can upgrade your plan at any time from the Billing section of your dashboard. Upgrades take effect immediately.