A software component that plans, calls tools, observes outcomes, and continues acting toward a goal, using an LLM as its reasoning engine.
agents
AI Agent
Related terms
Tools that implement AI Agent
CA
Claude Agent SDK
Agents · Claude Opus / Sonnet
8.6
Anthropic's official SDK for building autonomous Claude agents.
Free· Free SDK; API usage billed at Claude ratesClaude agentstool use
LA
LangChain
RAG · BYO (any major LLM)
8.3
The broad LLM application framework — chains, agents, retrievers.
Freemium· Free open-source; LangSmith paidgeneral LLM appsRAG
LA
LangGraph
FeaturedAgents · BYO (Claude / GPT / open)
8.8
Agent Orchestration Framework for Reliable AI Agents
Freemium· Developer: $0 / seat per month then pay as you go; Plus: $39 / seat per month then pay as you go; Enterprise: Custom pricing then pay as you goLong-running, stateful agentsMulti-agent and hierarchical architectures
AU
AutoGen
Agents · Model-agnostic: OpenAI (GPT-4o, GPT-4.1, o-series), Azure OpenAI, Anthropic Claude, Google Gemini, Ollama, and any OpenAI-compatible local model (vLLM, llama.cpp)
Microsoft's open-source framework for multi-agent AI applications
Free· Free and open-source (MIT/CC-BY-4.0). You pay only for the underlying model providers (OpenAI, Azure OpenAI, Anthropic, local models, etc.) you plug into it.Coder and critic pair programming loopsMulti-agent research and report writing
CR
CrewAI
FeaturedAgents · BYO (Claude / GPT / open)
8.4
Python framework for multi-agent orchestration.
Freemium· Basic: Free · Enterprise: Custommulti-agentorchestration
OP
OpenHands
Agents · Multi-model (Claude, Gemini, GPT/Codex)
8.0
Open-source autonomous coding agent that plans, edits, and ships changes across real codebases.
Freemium· Free tierautonomous-codingpr-review