Categories / Agent frameworks

Agent frameworks

Libraries for building your own AI agents.

Top pick

Vercel AI SDK

TypeScript toolkit for LLM apps and agents across providers.

Open sourceLast verified 2026-10-15

Mastra

TypeScript agent framework with workflows, memory and evals.

Open sourceLast verified 2026-10-15

LangGraph

Graph-based, stateful agents in Python/JS.

Open source + paid platformLast verified 2026-10-15

OpenAI Agents SDK

Lightweight Python SDK for multi-agent workflows.

Open sourceLast verified 2026-10-15

CrewAI

Role-based multi-agent crews in Python.

Open source + paid platformLast verified 2026-10-15

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