Nanonets vs Windmill
A detailed comparison to help you choose between Nanonets and Windmill.
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Verdict: Windmill wins
Windmill scores 4.2/5, edging out Nanonets at 4.1/5. Engineering teams who want code-first internal tools, workflows and APIs on infrastructure they control, with no per-execution billing.
Nanonets Extract structured data from documents with AI-powered automation | Windmill Open-source workflow automation for developers | |
|---|---|---|
| Rating | 4.1 (1 review) | 4.2 (1 review) |
| Pricing Model | freemium | freemium |
| Starting Price | Free tier available | Free tier available |
| Best For | Finance and operations teams processing invoices, POs, receipts or forms at volume who want AI extraction wrapped in validation, routing and ERP export with usage-based pricing. | 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 | free tierapi accessteam features | open sourcefree tierapi access |
| Visit Nanonets → | Visit Windmill → |
Nanonets
Pros
- + Block-based pricing is the clearest cost model in the category: $0.02 simple / $0.10 standard AI / $0.30 complex AI per run — my four-block invoice test cost roughly $0.52 per document at list rates
- + $50 in free credits with no card makes real evaluation possible: I ran production-shaped documents before spending anything
- + Workflow layer with validation blocks catches extraction errors (a smudged quantity field in my test) before they reach downstream systems
- + Extraction handles the hard cases — multi-page invoices with line-item tables and nested fields — with only one field-level error on my messy sample
- + Breadth of ingestion: API, web upload, email forwarding, cloud storage connectors, and ERP/database integrations on Growth
Cons
- - Billing is per block run, not per page — workflows with many validation retries can multiply cost in ways per-page pricing would not
- - Growth and Enterprise pricing is quote-only, and the 'up to 40% volume discount' is negotiated rather than published
- - Starter caps at three users with community support and excludes premium blocks (classification, barcode/signature, generative AI, custom Python)
- - Fax-grade scans and handwriting still need human review; legible print-style annotation is the practical ceiling
- - Compliance features (HIPAA posture, regional data residency) are Enterprise conversations — not available self-serve
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, Nanonets or Windmill?▼
Windmill scores higher at 4.2/5 vs 4.1/5 for Nanonets, making it the better-rated option in our comparison.
What is the difference between Nanonets and Windmill?▼
Nanonets: Nanonets uses AI to pull data out of invoices, receipts and other documents and pushes the result into systems such as SAP and Salesforce, automating work like accounts payable. 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 Nanonets or Windmill more affordable?▼
Nanonets starts at €0/mo, Windmill starts at €0/mo. Check the comparison table above for current pricing.
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