Compare Relay.app and Zapier side by side. Both are tools in the Workflow Automation category.
Choose Relay.app if unique Human-In-The-Loop functionality for critical approval workflows and compliance needs.
Choose Zapier if largest app ecosystem with 7,000+ integrations, far exceeding competitors.
Want to compare Relay.app and Zapier on your own traffic?
Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 250+ models through one gateway. Free tier covers 10K traces per month. Setup in 5 minutes, no credit card.
| Category | Workflow Automation | Workflow Automation |
| Pricing | — | Freemium |
| Best For | — | Non-technical teams who need to connect apps and automate repetitive tasks |
| Website | relay.app | zapier.com |
| Key Features | — |
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Key criteria to evaluate when comparing Workflow Automation solutions:
Relay.app is an AI-powered workflow automation platform that helps teams connect their everyday tools and automate repetitive work without code, while maintaining human oversight through unique Human-In-The-Loop capabilities. Founded in 2021 by Jacob Bank and headquartered in San Francisco, Relay.app distinguishes itself in the market by allowing companies to add intermediate manual approval steps that incorporate human judgment, context, and perspective into automated workflows. The platform pauses workflow execution until designated assignees provide approval, reject, or give feedback, ensuring critical decisions remain under human control. Relay.app connects with 100+ tools including Gmail, Slack, Notion, HubSpot, Airtable, and Google Workspace to build seamless cross-platform automations. All plans include monthly free AI credits for performing AI actions with popular models like GPT-4o, Claude 3.5 Sonnet, and Google Gemini 1.5 Pro. The platform was awarded Best for Operations & Compliance Teams Award for AI Workflow Automation in Winter 2026 and maintains a 100% uptime record.
Zapier is the undisputed leader in no-code workflow automation, offering over 7,000 app integrations to help businesses of all sizes improve productivity by connecting and automating workflows between popular software applications. Founded in 2011, Zapier has evolved into a comprehensive automation platform that now includes Tables, Forms, and AI capabilities like Zapier Copilot, which lets users describe workflows in plain English to automatically generate automations. The platform features a library of over 250 AI app integrations and built-in AI actions for tasks like summarizing text and classifying data. With Zapier MCP (Model Context Protocol), the platform serves as a complete orchestration layer for AI-powered workflows, combining data management, custom forms, workflow automation, and AI actions in a single unified package. The platform is used globally by teams ranging from small businesses to large enterprises seeking to eliminate manual work without requiring technical expertise.
Platforms for building multi-step AI-powered automations that connect apps, APIs, and agents into repeatable business workflows.
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