Lindy AI vs Windmill
A detailed comparison to help you choose between Lindy AI and Windmill.
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Verdict: Windmill wins
Windmill scores 4.2/5, edging out Lindy AI at 3.7/5. Engineering teams who want code-first internal tools, workflows and APIs on infrastructure they control, with no per-execution billing.
Lindy AI Your AI employee for every workflow | Windmill Open-source workflow automation for developers | |
|---|---|---|
| Rating | 3.7 (1 review) | 4.2 (1 review) |
| Pricing Model | freemium | freemium |
| Starting Price | Free tier available | Free tier available |
| Best For | Founders and executives who want an AI assistant to own inbox triage, scheduling, meeting prep and follow-up drafts without building workflows themselves. | Engineering teams who want code-first internal tools, workflows and APIs on infrastructure they control, with no per-execution billing. |
| Free Tier | ||
| API Access | ||
| Team Features | ||
| Open Source | ||
| Tags | no codefree tier | open sourcefree tierapi access |
| Visit Lindy AI → | Visit Windmill → |
Lindy AI
Pros
- + Inbox triage matched my own sorting on roughly 4 of 5 messages in a week of real mail
- + SMS/iMessage access to a real pre-meeting digest worked well away from the desk
- + Credits pause instead of overaging when the pool runs out — no surprise bills, confirmed in docs and in my run
- + Calendar write actions landed correctly every time in my testing
- + Plain-English agent setup: a post-call follow-up flow built from a prompt in about 15 minutes
Cons
- - Credit consumption is hard to forecast before use; '3k credits/user/month' does not translate into meetings or emails
- - Lindy's own websites disagree on plan names, prices and credit allowances (Plus $29.99 vs $49.99; Free/Pro/Business vs Plus/Pro/Max)
- - Phone calls are English-only with a single concurrent call on entry tiers
- - Drafts on long CC-heavy or mixed-language threads were occasionally tone-deaf, so auto-send felt risky
- - Notion write actions needed an occasional retry in my runs
Windmill
Pros
- + Script-first model: typed functions become endpoints, jobs and flow steps with auto-generated UIs — my nightly pipeline was rebuilt in one Docker session
- + Free self-hosted tier carries unlimited executions, not a trial disguised as a plan
- + Rust execution engine kept orchestration overhead sub-second between flow steps in my tests
- + Worker-group model scales throughput with replicas and tag routing instead of redesigns
- + Transparent per-unit Enterprise pricing ($20/builder, $10/non-builder, $50/worker) with published SLA terms
Cons
- - Zero no-code path — teams without developers cannot use it at any price
- - Prebuilt Community Edition images bundle proprietary Windmill Labs terms (no resale/wrapping/modifying), separate from the AGPLv3 source build
- - Worker groups and role configuration have a real learning curve before the platform pays off
- - Small vendor (under twenty employees in 2024 reporting, ~$15M raised) relative to the incumbents it replaces
- - Flow durability is lighter than Temporal for mission-critical long-running orchestration
Frequently Asked Questions
Which is better, Lindy AI or Windmill?▼
Windmill scores higher at 4.2/5 vs 3.7/5 for Lindy AI, making it the better-rated option in our comparison.
What is the difference between Lindy AI and Windmill?▼
Lindy AI: Lindy builds AI assistants that connect to a company's tools and carry out recurring work such as email, scheduling and CRM updates. Windmill: Windmill is an open-source platform that turns scripts in Python, TypeScript, Go and other languages into workflows, internal apps and scheduled jobs. It is aimed at developers who prefer code over drag-and-drop builders.
Is Lindy AI or Windmill more affordable?▼
Lindy AI starts at €0/mo, Windmill starts at €0/mo. Check the comparison table above for current pricing.
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