Agent Frameworks

Open-source and commercial frameworks for building AI agents. Compare paradigms, language support, community traction, and extensibility.

AutoGen

Microsoft

actor

Multi-agent conversation framework

python0
Braintrust

Braintrust

functional

Eval automation with CI gates

typescript0
CrewAI

CrewAI

role-based

Role-based multi-agent orchestration

python0MCP
DSPy

Stanford NLP

declarative

Programmatic prompting optimization

python0
Google ADK

Google

graph

Google Agent Development Kit

python0
Langfuse

Langfuse

functional

OSS LLM observability

typescript0
LangGraph

LangChain

graph

Graph-based agent orchestration

python0MCP
Mastra

Mastra

type-safe

TypeScript-first agent framework

typescript0MCP
OpenAI Agents SDK

OpenAI

functional

Official OpenAI agent framework

python0
Pydantic AI

Pydantic

type-safe

Type-safe Python agent framework

python0MCP
Smolagents

Hugging Face

functional

Minimalist HF agent framework

python0
Vercel AI SDK

Vercel

functional

TypeScript streaming AI SDK

typescript0MCP