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

# Agent Overview

> Understanding how Ansa agents work

## What is an Agent?

An agent is an AI-powered chatbot that can:

* Answer questions using context from your knowledge base
* Execute actions through custom tools and APIs
* Stream responses in real-time
* Remember conversation history

## Agent Settings

### Model Selection

Choose the AI model that powers your agent:

| Model                  | Best For                        | Speed    |
| ---------------------- | ------------------------------- | -------- |
| GPT-4o Mini            | Quick responses, cost-effective | Fastest  |
| GPT-4o                 | General purpose                 | Fast     |
| Claude Sonnet 4        | General purpose, balanced       | Fast     |
| Claude Opus 4          | Complex reasoning               | Slower   |
| o1 / o1-mini / o3-mini | Advanced reasoning              | Variable |
| Gemini 2.0 Flash       | Fast responses                  | Fastest  |
| Gemini 2.5 Pro         | Complex tasks                   | Fast     |

<Note>
  Model availability depends on your plan. Free plans include GPT-4o Mini only.
</Note>

### System Prompt

The system prompt defines your agent's personality and behavior. Write clear instructions:

```
You are a customer support agent for TechCorp.

Guidelines:
- Be friendly and professional
- Answer questions about our products
- If you don't know something, say so
- Never make up information
- For billing issues, direct users to support@techcorp.com
```

### Temperature

Controls response creativity:

* **Low (0-30)**: More focused, deterministic responses
* **Medium (40-60)**: Balanced creativity
* **High (70-100)**: More varied, creative responses

For support agents, use lower temperature. For creative applications, use higher.

## Managing Agents

### Creating an Agent

1. Go to **Dashboard**
2. Click **New Agent**
3. Enter name and description
4. Configure settings
5. Add knowledge and tools

### Agent Limits

Limits depend on your plan:

| Plan    | Agents    | Tools per Agent | Storage |
| ------- | --------- | --------------- | ------- |
| Free    | 1         | 1               | 400 KB  |
| Starter | 1         | 3               | 5 MB    |
| Growth  | 3         | 10              | 34 MB   |
| Pro     | Unlimited | Unlimited       | 100 MB  |