Softwr

Automation Integration · head to head

Relevance AI vs Windmill

Relevance AI logo

Relevance AI

Automation Integration

Specialist AI Agents for Every Task

From
On request
Rated
-
Full reviewWebsite
Windmill logo

Windmill

Automation Integration

Open-source developer platform for building scripts, workflows, and internal apps

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Windmill has a free tier, so it costs nothing to try first.
  • Each has a real cost: Relevance AI no published standard pricing tiers or plans; Windmill free self-hosted tier caps SSO users at 10 and workspaces at 3, requiring Enterprise for larger teams.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Relevance AI and Windmill actually diverge.

Attributes where Relevance AI and Windmill differ
AttributeRelevance AIWindmill
Starting priceOn requestFree
Pricing modelusage-basedopen-source
Free tierNoYes
PlatformsWebweb, api, linux, windows, mac

Identical on both: user rating (Not yet rated), category (Automation Integration).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Relevance AI

Nothing recorded that Windmill does not also cover.

Only in Windmill

  • Script-to-workflow engine
  • Auto-generated UIs
  • Self-hosted deployment
  • Git sync
  • SSO support
  • Audit logs

What people use each for

The jobs each tool is most often brought in to do.

Relevance AI

  • AI agent platform for automating business processes with LLMsnot Windmill
  • Low-code automation and workflow orchestration using language modelsnot Windmill

Windmill

  • Turning ad-hoc scripts into scheduled jobs and APIsnot Relevance AI
  • Building internal tools from existing Python/TypeScript codenot Relevance AI
  • Self-hosted automation for engineering teamsnot Relevance AI
  • Orchestrating multi-language workflowsnot Relevance AI

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Relevance AI

  • No published standard pricing tiers or plans
  • Pay-per-task model pricing varies significantly by AI model selection
  • Enterprise quotes require direct contact with sales
  • Task costs range from 0.01 to 0.11 USD depending on model used

Windmill

  • Free self-hosted tier caps SSO users at 10 and workspaces at 3, requiring Enterprise for larger teams.
  • Compute unit and seat-based pricing (developer vs. operator seats, worker compute units) adds pricing complexity beyond a flat monthly fee.
  • Email triggers are capped at 100/day on the free tier, limiting event-driven use cases without upgrading.
  • Smaller ecosystem of pre-built integrations compared to more established automation tools like n8n.

Pricing, plan by plan

Relevance AI

On request

No published plan breakdown. See the Relevance AI review.

Windmill

Free
  • Free / Open-sourceFree
    • Unlimited executions
    • Self-hosted deployment
    • Max 10 users with SSO
  • Enterprise$120/month
    • Unlimited executions and workspaces
    • Uncapped SSO seats
    • 24/7 priority support (3-hour response)

Which should you pick?

Choose Relevance AI if

Nothing in the data separates Relevance AI from Windmill on the points above - pick on price and on how each one feels to use.

Relevance AI review

Choose Windmill if

  • You need script-to-workflow engine.
  • You want to start without paying.
  • You work on web, api, linux, windows, mac.
  • You also want auto-generated uis.
Windmill review

Questions people ask

Is Relevance AI or Windmill better?
Neither clearly leads. Relevance AI starts at On request and Windmill at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Relevance AI or Windmill?
Windmill has a free tier; the other does not. Paid plans start at On request for Relevance AI and Free for Windmill.
Does Relevance AI or Windmill run on more platforms?
Relevance AI runs on Web. Windmill runs on web, api, linux, windows, mac.
Can I use Windmill for free?
Yes. Windmill has a free tier, so you can try it without paying. Relevance AI starts at On request.
What is Relevance AI best used for?
Relevance AI is most often used for ai agent platform for automating business processes with llms, low-code automation and workflow orchestration using language models. Of those, ai agent platform for automating business processes with llms and low-code automation and workflow orchestration using language models are not what Windmill is typically brought in for.
What can Relevance AI do that Windmill cannot?
Windmill covers Script-to-workflow engine, Auto-generated UIs, Self-hosted deployment, Git sync.

Answered from the vendors’ own pages

Relevance AI: What is Relevance AI's pricing model?

Relevance AI uses a pay-per-task model where costs vary by AI model selected. Average cost per task is approximately 0.09 USD, with actual costs ranging from 0.01 to 0.11 USD depending on which model the system routes to. The platform automatically selects the lowest-cost model that meets performance requirements.

Source
Windmill: What does Windmill cost?

Windmill's Free and Open-source edition is $0/month for self-hosted use with unlimited executions, while Enterprise starts at $120/month with unlimited workspaces and uncapped SSO seats, priced further by developer/operator seats and compute units.

Source
Relevance AI: How much do Relevance AI tasks cost?

Task costs depend on model selection. Example usage shows customers spending 11800 USD monthly while processing 1.24 million tasks. For enterprise custom pricing, users must book a demo or contact the sales team.

Source
Windmill: Is there a free plan and what are its limits?

The free self-hosted plan supports unlimited executions but caps SSO at 10 users, workspaces at 3, groups/permissions at 4, and email triggers at 100 per day.

Source
Windmill: How is usage metered on Windmill Enterprise?

Enterprise usage is metered through seats (developer seats at $20/month, operator seats at $10/month) and compute units, e.g. $100/month for 2 standard-worker compute units.

Source
Windmill: What happens to a self-hosted Windmill deployment if the company shuts down?

The pricing page addresses this directly as an FAQ topic, noting that self-hosted applications built on the open-source edition can continue running independently of Windmill the company.

Source
Share

Related pages

More on Relevance AI

More on Windmill

Keep looking

Other head to heads