Best AI agent builders
Build agents that take actions for you. Ranked best first. Updated 16 Oct 2026.
#1n8n
unknownFrom £20/mo (Starter, billed annually)
Best for: Technical builders who want control
Why it's the pick: Visual workflows plus AI agent nodes, self-hostable
The catch: Steeper learning curve than Zapier; cloud from £20/mo
Visit n8n →#2Zapier
freemiumFrom $19.99/mo (Professional) · Free tier available
Best for: Non-technical teams automating apps
Why it's the pick: Huge app catalogue and the easiest setup
The catch: Gets expensive as task volume grows
Visit Zapier →#3Lindy
freemiumFrom $49.99/mo (Team) · Free tier available
Best for: Busy people who want an assistant now
Why it's the pick: Ready-made inbox, meeting and scheduling skills
The catch: Free credits only last 7 days; Team $49.99/mo
Visit Lindy →#4Relevance AI
unknownPrice not verified
Best for: Sales and ops teams building AI 'workers'
Why it's the pick: No-code multi-agent workforce with many integrations
The catch: Only Enterprise pricing was visible on its site
Visit Relevance AI →#5CrewAI
freemiumFrom Enterprise: custom (Basic is free) · Free tier available
Best for: Developers building multi-agent systems
Why it's the pick: Simple role-based crews; free Basic tier
The catch: Production features are Enterprise-only
Visit CrewAI →#6LangGraph
freemiumFrom $39/seat/mo (LangSmith Plus) · Free tier available
Best for: Engineers who need reliable, stateful agents
Why it's the pick: Fine-grained control plus LangSmith tracing
The catch: Code-heavy; not for no-code users
Visit LangGraph →#7OpenAI Agents SDK
unknownPrice not verified
Best for: Developers already on OpenAI
Why it's the pick: Lightweight, code-first, built-in tracing
The catch: OpenAI is retiring Agent Builder (AgentKit) on 30 Nov 2026; use the SDK, not the visual builder
Visit OpenAI Agents SDK →
Featured placement on this list. Clearly labelled, never mixed into our rankings.