n8n, Make.com, or Zapier? It's the question every automation builder faces. All three platforms have added AI capabilities, all claim to support "AI agents," and all have passionate communities arguing their case.
But here's what none of them will tell you upfront: none handles AI agent memory natively. Every AI node on every platform starts each run with a blank slate.
This article gives you an honest three-way comparison, including how to add real persistent memory to all of them.
Quick Overview
| Feature | n8n | Make.com | Zapier |
|---|---|---|---|
| Pricing model | Self-hosted free / Cloud from $20 | Operations-based, from $9 | Task-based, from $20 |
| AI nodes | AI Agent, OpenAI, Anthropic | OpenAI, Claude, HTTP | OpenAI, Anthropic, AI steps |
| Native memory | In-session only | None | None |
| Community nodes | Yes (npm) | Yes (app marketplace) | Yes (app directory) |
| Code support | JavaScript/Python | None (visual only) | JavaScript (Code by Zapier) |
| Persistent memory | Via retainr | Via retainr | Via retainr |
| retainr integration | Native community node | Native Make.com app | Webhooks by Zapier |
n8n's AI Agent: What's Actually There
n8n's AI Agent node is genuinely impressive. It supports:
- Multi-step reasoning with tool use
- Built-in conversation memory (within a session)
- Connection to dozens of tools and APIs
- Streaming output
The critical limitation: "within a session" means within one workflow execution. Trigger the workflow again tomorrow, and the agent has forgotten everything.
n8n has a "Memory Manager" node, but it stores data in volatile memory — not persistent. Close n8n, update the workflow, or trigger from a new session, and memory is gone.
Make.com's AI Capabilities
Make.com's AI story is different. There's no dedicated AI Agent concept — instead you compose modules:
- OpenAI module for GPT calls
- Claude module for Anthropic
- Text parser for structured extraction
- HTTP module for any other AI API
This is quite flexible, but it means there's no built-in memory mechanism at all. Every scenario run starts completely fresh.
Zapier's AI Features
Zapier's AI capabilities are simpler but growing fast:
- OpenAI and Anthropic actions — direct LLM calls
- AI by Zapier — built-in OpenAI actions in the Zap editor
- Code by Zapier — JavaScript for custom logic
Like the other platforms, Zapier has zero built-in memory persistence. Each Zap trigger starts fresh.
Head-to-Head: Building an AI Support Bot
Let's compare building the same thing on all three platforms.
The scenario: Customer sends a message, AI responds with context from past interactions
- Webhook trigger
- retainr Search Memory node — finds relevant past context (query = message, namespace = customer:alice, limit = 5)
- AI Agent node — with system prompt including memory context
- retainr Store Memory node — saves the interaction
- Respond to Webhook
Total nodes: 5 | Build time: ~20 minutes
The AI Agent node makes n8n the most powerful for multi-step reasoning — it can call tools, loop, and make decisions natively.
Where Each Platform Wins
n8n wins for:
Self-hosting: n8n can run on your own VPS for free. Complete data control. Make.com and Zapier are SaaS-only.
Developer flexibility: JavaScript/Python nodes for complex memory logic — custom scoring, filtering, re-ranking.
AI agent architecture: The built-in tool-use framework makes it easier to build agents that take actions based on AI decisions.
Cost at scale: Self-hosted n8n costs ~$10-20/month for the server, not per operation. Make.com and Zapier add up quickly at high volume.
Make.com wins for:
Visual clarity: Make.com's scenario builder is genuinely easier to read and debug. Complex n8n workflows can become spaghetti.
Non-technical builders: Make.com is accessible to people who've never written code. n8n has a steeper learning curve.
App ecosystem: Larger and more polished pre-built integrations.
Zapier wins for:
App breadth: 6,000+ app integrations, the broadest of any platform.
Reliability: Rock-solid uptime. Enterprise-grade SLA.
Ease of use: The most approachable platform for non-technical users.
Pre-built Zap templates: Large library of starting templates.
The Memory Verdict
For persistent AI memory, all three platforms need external storage. retainr works equally well on all of them:
- n8n: native community node (
n8n-nodes-retainr) - Make.com: native app in the marketplace
- Zapier: REST API via Webhooks by Zapier (native app coming)
Same capabilities across all platforms:
- Vector similarity search across all past memories
- User-level isolation
- Session and long-term memory types
- Tagging and filtering
- Automatic TTL expiration
The same API key works on all three — your agent's memory is platform-agnostic.
Which Should You Choose?
Choose n8n if:
- You care about data privacy and want self-hosting
- You'll build complex AI agents with multiple reasoning steps
- You want to write code when needed
- You're scaling to high volume and want to control costs
Choose Make.com if:
- Speed of building is most important
- You're working with non-technical teammates
- You want the most polished integration ecosystem
- Reliability guarantees matter more than cost
Choose Zapier if:
- You need connections to many different apps
- Your team is non-technical
- You want the largest pre-built template library
- You're already using Zapier for other automations
In practice: Most serious automation builders use multiple platforms — Make.com or Zapier for client-facing automations where polish matters, n8n for internal tools where flexibility matters.
The good news: your AI memory infrastructure (retainr) works the same on all of them, so switching platforms later doesn't mean rebuilding your agent's memory.
Give your AI agents a real memory
Free plan includes 1,000 memory operations/month. No credit card required.
Get persistent memory on any platform →Setting Up retainr on Each Platform
n8n: Settings → Community Nodes → Install: n8n-nodes-retainr
Make.com: Search "retainr" in the app marketplace. Connect with your API key.
Zapier: Use Webhooks by Zapier to call https://api.retainr.dev directly.
Frequently Asked Questions
Is there a cost difference for retainr across platforms? No. retainr pricing is based on memory operations, not which platform you use. Same plan covers all integrations.
Can I use retainr on multiple platforms simultaneously? Yes. The same API key and the same memory pool work across all platforms. An AI agent on n8n and another on Make.com can share the same user memories.
What happens if I switch platforms? Nothing changes on the memory side. Your retainr memories persist. Just connect your new platform with the same API key.
Which platform has the best support for AI loops/agents? n8n has the most sophisticated built-in AI Agent node with tool-use loops. Make.com and Zapier are better for linear AI flows.