Agent Frameworks

Turns a model call into a multi-step program.

• LangChainframeworkComposable abstractions for model calls, tools and state.langchain.comMore about LangChain in this index
• LlamaIndexframeworkData-centric framework for retrieval and agent workflows.llamaindex.aiMore about LlamaIndex in this index
• Pydantic AIframeworkType-safe agent framework that leans on Pydantic models.ai.pydantic.devMore about Pydantic AI in this index
• AutoGenframeworkMicrosoft research project for conversable multi-agent systems.microsoft.github.ioMore about AutoGen in this index
• CrewAIframeworkRole-based orchestration where agents collaborate as a crew.crewai.comMore about CrewAI in this index
• Semantic KernelframeworkMicrosoft SDK for embedding AI steps into .NET and Python apps.learn.microsoft.comMore about Semantic Kernel in this index
• MastraframeworkTypeScript agent framework with typed workflows and evals.mastra.aiMore about Mastra in this index
• OpenAI Agents SDKframeworkLightweight primitives for handoffs, guardrails and tracing.openai.github.ioMore about OpenAI Agents SDK in this index
• AgnoframeworkMinimal agent runtime centered on model-agnostic tool interfaces.agno.comMore about Agno in this index
• Claude Agent SDKframeworkAnthropic's toolkit for building agents with tool use and hooks.docs.anthropic.comMore about Claude Agent SDK in this index
• LettaplatformAgent runtime with persistent, editable memory as a first-class primitive.letta.comMore about Letta in this index
• smolagentsframeworkMinimal code-first agent loop from the Hugging Face team.huggingface.coMore about smolagents in this index
• Vercel AI SDKlibraryProvider-agnostic building blocks for streaming apps and agents.ai-sdk.devMore about Vercel AI SDK in this index