Directory / AI for a task / Building AI agents
The best AI to build an AI agent
Lindy, if you want an agent that owns a repeating job such as email or scheduling, rather than firing on a single trigger. It has no free plan, $29.99/user/mo after a 7-day trial, so check its work for a while before you trust it. Developers who want agents in a repo and a CI pipeline should use CrewAI instead, which is free and MIT licensed.
- 01 Lindy: Delegating a repeating job rather than a single trigger
- 02 CrewAI: Developers building multi-agent systems that live in version control
- 03 Gumloop: Ops teams building their own AI workflows
Top pick
Lindy
From $29.99/user/mo · no free tier (7-day trial only)
Agents hold a goal across many steps instead of firing one action, which suits email and scheduling work. $29.99/user/mo; no free tier, a 7-day trial only.
- Free tier
- None
- Entry plan
- $29.99/user/mo
Pick 02
CrewAI
Free · enterprise pricing on request
Code-first multi-agent orchestration: Crews for agents that delegate to each other, Flows for deterministic control, and any workflow exports as an MCP server. The framework is MIT licensed and free to self-host; the hosted Basic plan is free for 50 executions a month, and above that it is enterprise sales only.
- Free tier
- Basic, $0/month: 50 workflow executions/month, visual editor and AI copilot, GitHub integration. Separately, the underlying CrewAI framework is MIT-licensed and free to self-host with no execution cap, at the cost of only your own LLM API spend.
- Entry plan
- No self-serve paid tier currently exists; the only path beyond free Basic is Enterprise, custom-quoted and sales-gated with no published price
Pick 03
Gumloop
14-day Pro trial · from $37/mo
For the technical ops person who is not an engineer: prebuilt nodes for scraping and enrichment, unlimited seats and agents on Pro. From $37/mo after a 14-day trial, plus an 8% orchestration fee on usage.
- Free tier
- None currently; 14-day free trial of the Pro plan replaces the discontinued standing free tier
- Entry plan
- Pro, from $37/month: 20,000 credits/mo, 5 concurrent workflow runs, 25 concurrent agent chats, unlimited seats/agents, 35+ models, plus an 8% orchestration fee on usage
Skip if
Skip an autonomous agent for anything where a wrong action is expensive to undo, such as messages to customers, until you have watched it work for a while.
The free option
CrewAI's open-source framework is free to self-host with no execution cap; you pay only your own model API costs. CrewAI profile.
Prices side by side
| Tool | Free plan | Pricing |
|---|---|---|
| Lindy | No | From $29.99/user/mo · no free tier (7-day trial only) |
| CrewAI | Yes | Free · enterprise pricing on request |
| Gumloop | Trial | 14-day Pro trial · from $37/mo |
Is there a free AI to build an AI agent?
CrewAI's open-source framework is free to self-host with no execution cap; you pay only your own model API costs.
When is Lindy the wrong choice?
Anything where a wrong action is expensive to undo.
Deciding between these
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