Best AI for Building AI Agents
Frameworks and platforms to build your own agents.
Claude Code
Doubles as a general agent harness for builders.
Included in paid Claude plans (Pro and up) or pay-as-you-go API#2OpenAI Agents SDK
Minimal, production-ready agent SDK.
Free SDK; pay for API usage#3LangGraph
Fine-grained control for complex flows.
Open source + paid platform#4n8n
No-code agent workflows with 400+ integrations.
Free self-host + paid cloud#5CrewAI
Fastest multi-agent setup.
Open source + paid platform