What Are AI Agents?
ChatGPT
Claude
Gemini
PerplexityAI agents are autonomous AI systems that search, reason, plan, and act on behalf of users to complete tasks.
AI agents are autonomous AI systems that can search the web, reason about information, and take actions on behalf of users, representing the next evolution beyond AI search toward AI-mediated task completion.
Definition
An AI agent is an artificial intelligence system that:
- Perceives its environment (web, APIs, databases)
- Reasons about what actions to take
- Acts autonomously to achieve a goal
- Learns from outcomes to improve future actions
AI Agents vs AI Search
| Aspect | AI Search | AI Agents |
|---|---|---|
| User role | Ask questions | Set goals |
| AI role | Answer questions | Complete tasks |
| Interaction | Single query | Multi-step workflow |
| Output | Text answer | Completed action |
| Examples | ChatGPT, Perplexity | Auto-GPT, Devin, Claude Computer Use |
Types of AI Agents
| Type | Description | Example |
|---|---|---|
| Research agents | Gather and synthesize information | Perplexity Deep Research |
| Task agents | Complete specific tasks | Booking, purchasing |
| Code agents | Write and execute code | GitHub Copilot, Devin |
| Browser agents | Navigate and interact with websites | Claude Computer Use |
| Workflow agents | Orchestrate multi-step processes | Zapier AI, Make.com AI |
Why AI Agents Matter for GEO
AI agents will:
- Evaluate websites on behalf of users
- Compare products and services autonomously
- Make recommendations based on content quality
- Complete purchases without human intervention
Content optimized for AI agents must be:
- Machine-readable (structured data, clean HTML)
- Factually accurate (agents verify claims)
- Action-oriented (clear CTAs, booking links)
- API-accessible (for programmatic agent interaction)
Related Articles
- AI Agents and Content — Content strategy for agents
- AI Agent Optimization — Technical optimization
- What Is GEO? — Core GEO definition
Related Articles
AI Agent Optimization: Technical Guide
Technical implementation guide for optimizing websites for AI agent discovery, evaluation, and interaction.
AI Agents and Content: Preparing for Agent Search
How to prepare your content for AI agent consumption, where autonomous agents search, evaluate, and act on your content.
What Is GEO?
GEO is the practice of structuring content so AI systems can understand, retrieve, synthesize, and cite it in generated answers.