What Are AI Agents?

AI agents represent a significant evolution beyond conversational AI. While traditional LLMs respond to user queries, AI agents can plan, execute multi-step actions, use tools, and complete complex tasks autonomously. These systems bridge the gap between AI capabilities and real-world utility.

AI agents combine large language models with planning capabilities, memory systems, and access to tools and APIs, enabling them to take actions that achieve user goals without requiring step-by-step instructions for every action.

Famous AI Agents

🤖

OpenCode

Anomaly Inc.

An interactive CLI tool designed to help users with software engineering tasks. OpenCode assists with coding, debugging, refactoring, and explaining code across various programming languages and frameworks.

Key Capabilities:

  • Code generation and editing
  • Debugging assistance
  • File system operations
  • Git integration
  • Multi-language support

OpenCode exemplifies the agent paradigm: understanding high-level goals and autonomously working to achieve them through appropriate tool use.

💬

Claude

Anthropic

Claude has evolved from a conversational AI into a capable agent system. With the introduction of tool use and computer use capabilities, Claude can now interact with external systems and perform actions on behalf of users.

Key Capabilities:

  • Tool calling (functions)
  • Computer use (2024)
  • Extended context windows
  • Constitutional AI alignment
  • Multi-modal input

Claude represents the safety-first approach to agent development, demonstrating that powerful agents can be built with strong alignment constraints.

🔷

GPTs & Assistant API

OpenAI

OpenAI's platform enables creation of custom GPTs and assistants that can use custom actions, access external APIs, and perform specialized tasks beyond simple conversation.

Key Capabilities:

  • Custom action definitions
  • Knowledge retrieval
  • Code interpreter
  • DALL-E integration
  • Third-party API connections

OpenAI's ecosystem has made agent creation accessible to non-developers through the GPT Builder and prompt-based configuration.

🧠

AutoGPT

Open Source Community

AutoGPT was one of the first prominent attempts at creating fully autonomous agents. Given a high-level goal, it attempts to break down tasks, create sub-tasks, and execute them iteratively.

Key Capabilities:

  • Goal decomposition
  • Self-prompting
  • Web search integration
  • File operations
  • Memory persistence

AutoGPT demonstrated the potential (and risks) of autonomous agents, sparking widespread discussion about AI autonomy and safety.

🛠️

LangChain Agents

LangChain Community

The LangChain framework provides abstractions for building LLM-powered agents with tool use, memory, and planning capabilities. It powers numerous production agent applications.

Key Capabilities:

  • Tool abstraction layer
  • Agent reasoning frameworks
  • Memory management
  • Chain composition
  • RAG integration

LangChain has become the de facto standard for building production LLM applications, enabling developers to create sophisticated agent workflows.

🔍

Perplexity AI

Perplexity AI

While primarily a search-focused AI, Perplexity represents the agent-like integration of LLMs with real-time information retrieval, providing citations and synthesizing information from the web.

Key Capabilities:

  • Web search integration
  • Source citation
  • Fact verification
  • Follow-up questions
  • Structured knowledge synthesis

Perplexity has pioneered the "answer engine" paradigm, showing how agents can effectively bridge static training data with current information.

Types of AI Agents

🔍 Simple Reflex Agents

These agents respond to current perceptions without considering history or future consequences. They follow condition-action rules and work well in fully observable environments.

Example: Basic chatbot responding to keywords

🧠 Model-Based Reflex Agents

These agents maintain an internal state representing unobservable aspects of the environment, allowing them to make decisions even with partial information.

Example: Navigation systems tracking position without GPS

🎯 Goal-Based Agents

Agents that consider future consequences of their actions and plan sequences to achieve specific goals. They use search algorithms and planning to find solution paths.

Example: Task-planning assistants breaking down complex requests

📊 Utility-Based Agents

These agents maximize a utility function, allowing them to make optimal decisions when multiple goals conflict or when trade-offs are required.

Example: Resource allocation systems optimizing for cost/benefit

🧩 Learning Agents

Agents that improve performance over time through learning. They combine learning components with performance elements to adapt to new situations.

Example: Recommendation systems learning from user feedback

🔄 Hierarchical Agents

Complex agents with multiple layers of abstraction, from low-level actions to high-level goals. They break complex tasks into manageable subtasks across levels.

Example: Autonomous vehicle systems with multiple control layers

Agent Architecture Components

User Interface
Chat, Voice, API
Planning Engine
Goal Decomposition, Task Scheduling, Reasoning
Memory System
Short-term (Context), Long-term (Vector DB), Working Memory
Tool/Action Layer
Search, Calculator, APIs, File System, Code Execution
LLM Core
Reasoning, Language Understanding, Response Generation

The Future of AI Agents

🤝 Multi-Agent Systems

Future agents will collaborate with each other, specializing in different tasks and communicating to solve complex problems that no single agent could handle alone.

🔐 Autonomous Security

Agents will be designed with robust security boundaries, ensuring they cannot take harmful actions regardless of instructions or goal conflicts.

💼 Enterprise Deployment

Production-ready agents will integrate with enterprise systems, handling business processes from customer service to data analysis.

🏠 Personal Assistants

Agents will manage complex personal tasks, coordinating across apps and devices to handle scheduling, purchases, and daily organization.

Learn About AI Security

Understanding the security implications of powerful AI agents is crucial.

Explore Security