Capability layer
Agent frameworks
Libraries for wiring models into agents that plan, call tools, and loop toward a goal.
LangGraph
★Agent frameworks
A low-level framework for building stateful, multi-step agents as explicit graphs of nodes and edges.
Agno
Agent frameworks
A fast, lightweight Python framework for building multi-agent systems with memory and tools.
AutoGen
Agent frameworks
Microsoft's framework for multi-agent systems built around asynchronous, conversational message passing.
Claude Agent SDK
Agent frameworks
Anthropic's SDK for building agents on Claude, with tools, subagents, and managed context.
CrewAI
Agent frameworks
A framework for orchestrating role-based agents that collaborate on a task as a crew.
DSPy
Agent frameworks
A framework for programming language models with optimizable modules instead of hand-written prompts.
Mastra
Agent frameworks
A TypeScript framework for agents, workflows, and RAG, from the team behind Gatsby.
OpenAI Agents SDK
Agent frameworks
OpenAI's lightweight framework for building agents with handoffs, guardrails, and built-in tracing.
Pydantic AI
Agent frameworks
A type-safe Python agent framework from the Pydantic team, built around validated structured outputs.
Semantic Kernel
Agent frameworks
Microsoft's SDK for composing AI skills, plugins, and agents into enterprise applications.
smolagents
Agent frameworks
Hugging Face's minimal agent library where agents act by writing and running Python code.