Windmill vs Relevance AI

A detailed comparison to help you choose between Windmill and Relevance AI.

Windmill

Windmill

Open-source workflow automation for developers

Relevance AI

Relevance AI

Build and deploy AI agents without coding

Rating3.9 (550 reviews)4.7 (507 reviews)
Pricing Modelfreemiumfreemium
Starting PriceFree tier availableFree tier available
Best ForEngineering teams building internal tools and data pipelines with codeNon-technical teams and business operations looking to automate repetitive workflows with AI agents quickly.
Free Tier
API Access
Team Features
Open Source
Tags
open sourcefree tierapi access
no codeteam features
Visit Windmill →Visit Relevance AI →

Windmill

Pros

  • + Fully open-source
  • + Self-hostable
  • + Code-first with UI wrapper

Cons

  • - Developer-focused — not no-code
  • - Setup required
View full Windmillreview →

Relevance AI

Pros

  • + Deploy agents without writing code using drag-and-drop builder
  • + Connect to external APIs and tools directly within agent workflows
  • + Monitor agent performance and execution logs in real-time
  • + Use pre-built templates to accelerate agent creation

Cons

  • - Limited customization for complex logic compared to code-based frameworks
  • - Pricing scales with agent executions, which can add up for high-volume use cases
View full Relevance AIreview →

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Windmill vs Relevance AI — Comparison 2026 | ToolSpotter