🚀 Quick Verdict
Relay solves the biggest fear in automation: AI hallucinating or sending something wrong to a client. The ability to pause a workflow for a manual thumbs-up is remarkably smooth. We found it much easier to build complex logic here than in traditional legacy platforms.
| Overall Score | 9.2/10 |
| Best For | Teams needing human oversight |
| Tested Plan | Starter ($18/mo) |
| Testing Period | 14 days |
| Biggest Strength | Human-in-the-loop controls |
| Biggest Weakness | Smaller integration library |
| Best Alternative | Zapier |
🤔 What Is Relay?
Relay is a workflow automation tool designed specifically for teams that want to use AI without losing control. Founded by Jacob Bank, former product lead at Google, it focuses on making automation feel like hiring a smart junior staff member rather than wiring complex circuits.
The platform stands out by allowing you to insert manual steps into any automated path. It combines high-end AI models like Claude and GPT-4 directly into the builder, so you don’t need to manage separate API keys or complicated technical setups.
⚙️ How We Tested Relay
We used the Starter plan at $18 per month for two weeks to manage real business operations. Our testing focused on three founder-led tasks: drafting personalized LinkedIn replies from email leads, auto-logging Etsy orders into Tables, and setting up an approval gate for high-value Stripe refunds.
✨ Key Features (What Actually Stood Out)
Relay changes the game by treating humans as a necessary part of the automation process rather than an afterthought.
- Human-in-the-Loop — We set a rule to pause any email draft. The system sent us a notification, let us edit the text, and only then sent it to the recipient.
- Built-in AI Agents — You don’t need OpenAI keys. We just picked Claude 3.5 Sonnet from a dropdown and it started summarizing long Slack threads immediately.
- Native Tables — Instead of connecting a messy Google Sheet, we used internal tables. They felt much faster and kept our data organized within the workflow.
- Collaborative Editing — Two people on our team edited the same workflow at once. It worked just like a Google Doc without any version conflicts.
- MCP Server support — This is great for technical founders. It lets you turn Relay workflows into tools that other AI apps can trigger.
💰 Relay Pricing — Is It Worth It?
Relay’s pricing is aggressive because it charges per user rather than per automation run. This is a massive relief for anyone who has been hit with a huge bill from competitors for running high-volume productivity workflows.
| Plan | Price | Best For | Watch Out For |
| Free | $0 | Solo experimenters | 200 automation steps limit |
| Starter | $18/mo | Small biz founders | Limited to 2 users |
| Team | $69/mo (annually) | Growing agencies | Seat-based pricing applies |
Our pick: Starter — For $18, you get unlimited automations for two people, which is significantly cheaper than similar tiers elsewhere.
🧪 What We Found During Testing
Building a workflow felt surprisingly fast. When we integrated Shopify, the data fields appeared instantly without us having to “test” the trigger twenty times to find the right variables. The chat-based builder is more than a gimmick; we described a workflow in plain English and it actually mapped out 80% of the logic correctly.
A founder in our community who runs a client onboarding agency told us that the human review step finally made them comfortable enough to automate their client-facing update emails.
⚠️ Limitations We Found
- Smaller Integration Pool — As of early 2025, they don’t have thousands of apps like Zapier. If you use a niche CRM, it might not be there yet.
- Template Capping — Some specific use cases like Reddit moderation have template limits that might frustrate power users.
- Mobile Experience — Building complex logic on a phone is still difficult compared to the desktop visual editor.
⚔️ Relay vs Competitors
Relay sits between the simplicity of Zapier and the technical power of Make, but with a unique focus on AI safety.
| Competitor | Pick it instead of Relay if… |
| Zapier | You need to connect to 6,000+ obscure legacy apps. |
| Make | You want total control over every raw API call and data transformation. |
| n8n | You prefer to self-host your data on your own servers. |
👍 Pros & Cons
| ✅ Pros | ❌ Cons |
🎯 Who Should Use Relay (And Who Shouldn’t)
✅ Use it if you:
- Are a non-technical founder who wants to build AI agents without coding.
- Need to review drafts or approvals before they go live.
- Are tired of paying high monthly fees for volume-based automation.
❌ Skip it if you:
- Need an enterprise tool for a massive company with strict procurement rules.
- Require a self-hosted, open-source solution like n8n.
- Only use one or two apps that aren’t in their current integration library.
❓ Frequently Asked Questions
Does Relay require separate API keys for OpenAI or Claude?
No, Relay has built-in AI credits. You can use GPT-4, Claude, and Gemini without setting up your own developer accounts.
How does the human-in-the-loop feature work?
You add a “Review” step. The automation pauses, sends you a message, and waits for your edit or approval before moving to the next step.
Is Relay cheaper than Zapier?
Generally yes, because Relay charges per user for unlimited runs, whereas Zapier charges more as your volume of tasks increases.
Can I build an AI agent that speaks?
Yes, we tested the Cartesia integration which allows you to convert text summaries into natural-sounding audio briefings.
What are Relay Tables?
They are internal databases built into the app. They act like a faster, more reliable version of a Google Sheet for storing your automation data.
Can I use Relay for Reddit moderation?
Yes, there is a specialized version of the app for Reddit moderators to automate stickied posts and announcements.
Looking for more tools like this? See all automation tools we’ve reviewed →
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