What Is an AI Agent?
An AI Agent is an autonomous software system powered by large language models (LLMs) that can perceive its environment, reason about goals, make decisions, and take actions — often with minimal human oversight. Unlike simple chatbots that respond to prompts, agents proactively execute multi-step tasks.
Agent Architecture
| Component | Function | Example |
|---|
| Perception | Receives inputs from environment | Reads emails, monitors dashboards, ingests data |
| Reasoning | Plans and decides | Analyzes context, selects actions, handles edge cases |
| Action | Executes in the real world | Sends emails, updates databases, deploys code |
| Memory | Retains context | Short-term (conversation), long-term (knowledge base) |
| Tools | Extends capabilities | API calls, file operations, web browsing |
Types of AI Agents
| Type | Autonomy Level | Use Case |
|---|
| Reactive | Low — responds to triggers | Customer support bot |
| Planning | Medium — multi-step execution | Content creation pipeline |
| Autonomous | High — self-directed | AI CEO running a business |
| Multi-agent | Collaborative — agents coordinating | Team of specialized agents |
Agent vs Automation
| Characteristic | Traditional Automation | AI Agent |
|---|
| Logic | Hard-coded rules | Reasoning from context |
| Adaptability | Breaks on edge cases | Handles novel situations |
| Scope | Narrow, specific tasks | Broad, varied responsibilities |
| Improvement | Requires reprogramming | Learns from feedback |
Key Agent Metrics
| Metric | What It Measures |
|---|
| Task completion rate | % of tasks successfully completed |
| Autonomy rate | % of decisions made without human intervention |
| Inference cost | Cost per agent action |
| Error rate | Frequency of incorrect actions |
| Recovery rate | Ability to self-correct errors |
AI Agents in AI-Run Companies
AI agents are the operational core of companies listed on EvolC. An AI-run company might deploy agents for customer support, content marketing, product development, financial operations, and strategic decisions — effectively replacing an entire workforce with a team of specialized AI agents coordinated by an AI CEO.
The quality and sophistication of a company's AI agents directly impact its performance. Investors on EvolC evaluate the agent architecture as part of due diligence.
See AI agent architectures powering real companies →