AI Agent Framework Comparison
| vs | Framework ↕ | Language | Stars ↓ | Multi-Agent | Tools | Stream | RAG | MCP | Difficulty ↕ | Maturity | Info |
|---|---|---|---|---|---|---|---|---|---|---|---|
AutoGPT v0.6.47 · MIT | Python | 182.0k | Limited | Yes | No | Yes | No | Medium | Beta | ||
LangChain / LangGraph v0.3 / v0.3 · MIT | Python | 126.0k | Yes | Yes | Yes | Yes | Via Adapter | High | Production | ||
AutoGen (Microsoft) v0.4 · MIT | Python | 51.0k | Yes | Yes | Yes | Yes | Planned | Medium | Stable | ||
LlamaIndex v0.12 · MIT | Python | 47.0k | Limited | Yes | Yes | Yes | Via Adapter | Medium | Production | ||
CrewAI v1.9.3 · MIT | Python | 43.6k | Yes | Yes | Yes | Yes | Yes | Low | Production | ||
DSPy (Stanford) v3.1.3 · MIT | Python | 32.0k | No | Yes | No | Yes | No | High | Stable | ||
Semantic Kernel (Microsoft) v1.30 · MIT | .NET | 26.7k | Yes | Yes | Yes | Yes | Yes | Medium | Production | ||
Smolagents (HuggingFace) v1.9 · Apache-2.0 | Python | 25.2k | Yes | Yes | Yes | Yes | No | Low | Stable | ||
BabyAGI v2.0 · MIT | Python | 22.0k | No | Yes | No | No | No | Low | Alpha | ||
Vercel AI SDK v6.0 · Apache-2.0 | TypeScript | 21.6k | Limited | Yes | Yes | Yes | Yes | Low | Production | ||
Haystack (deepset) v2.9 · Apache-2.0 | Python | 21.5k | Limited | Yes | Yes | Yes | No | Medium | Production | ||
Mastra v1.0 · Elastic-2.0 | TypeScript | 21.0k | Yes | Yes | Yes | Yes | Yes | Medium | Stable | ||
OpenAI Agents SDK v0.1 · MIT | Python | 18.8k | Yes | Yes | Yes | No | Yes | Low | Beta | ||
Pydantic AI v1.57 · MIT | Python | 14.8k | Limited | Yes | Yes | No | Yes | Low | Stable | ||
Anthropic Agent SDK v0.1.33 · MIT | Python | 4.5k | Limited | Yes | Yes | No | Yes | Low | Alpha |
AutoGPT
PythonBetaThe viral autonomous agent project. Evolved from a script into a full platform with a visual builder and marketplace.
LangChain / LangGraph
PythonProductionThe most popular LLM framework. LangGraph adds stateful, graph-based orchestration for complex multi-step agents.
AutoGen (Microsoft)
PythonStableMicrosoft's multi-agent conversation framework. v0.4 is a complete redesign. Merging with Semantic Kernel into unified Microsoft Agent Framework.
LlamaIndex
PythonProductionThe leading framework for building LLM-powered agents over your data. Specializes in connecting, indexing, and querying data from 160+ sources.
CrewAI
PythonProductionLean, lightning-fast Python framework for orchestrating role-playing autonomous AI agents. Built entirely from scratch, independent of LangChain.
DSPy (Stanford)
PythonStableThe framework for programming -- not prompting -- language models. Uses compilers to optimize prompts and weights automatically.
Semantic Kernel (Microsoft)
.NETProductionMicrosoft's enterprise AI SDK for .NET/Python/Java. Merging with AutoGen into a unified Microsoft Agent Framework.
Smolagents (HuggingFace)
PythonStableA barebones library for agents that think in code. Minimal abstractions, maximum transparency.
BabyAGI
PythonAlphaAn experimental framework for a self-building autonomous agent. Minimal by design, used primarily for research and learning.
Vercel AI SDK
TypeScriptProductionThe AI toolkit for TypeScript from the creators of Next.js. Over 20 million monthly downloads. Unified API for any LLM provider.
Haystack (deepset)
PythonProductionAI orchestration framework for building customizable, production-ready LLM applications. Strong focus on RAG and NLP pipelines.
Mastra
TypeScriptStableTypeScript-first AI agent framework from the Gatsby team. Provides workflows, RAG, and first-class MCP support out of the box.
OpenAI Agents SDK
PythonBetaOfficial OpenAI agent framework. Lightweight and powerful with multi-agent handoffs, guardrails, and tracing out of the box.
Pydantic AI
PythonStableGenAI agent framework the Pydantic way. Type-safe, validated, and production-ready with V1 API stability commitment.
Anthropic Agent SDK
PythonAlphaOfficial Python SDK for building agents with Claude. Alpha status but rapidly evolving with native MCP support.
This tool is provided as-is for convenience. Output should be verified before use in any production or critical context.