AI Tool Comparison
n8n vs Retell AI
A side-by-side breakdown to help you pick the right tool for your workflow.
n8n
Visually connect apps, APIs, and AI models into multi-step automations, free and self-hostable, or run on Cloud with per-execution pricing.
Retell AI
Power phone and chat agents that sound natural in conversation, assembled from any mix of LLM, voice, and telephony provider.
Bottom Line
Last reviewed: August 2026
n8n and Retell AI both sit in Automation, but they're built around different use cases within it. n8n carries the higher rating (4.7 vs 4.5), but a gap that size rarely overrides a real workflow fit on its own.
Choose n8n if…
Best for teams that want automation they can self-host and fully control, and its edge is free and self-hostable, with the same visual workflow builder as the paid competitors. The best choice when you want Zapier's flexibility without the recurring cost.
Choose Retell AI if…
Best for businesses that want phone-based voice agents handling calls at scale without piecing together the voice stack themselves, and its edge is a visual workflow builder handles call logic with no code, on top of a managed speech-to-text-to-LLM-to-speech pipeline. A genuine full-stack shortcut versus building from raw APIs, per-minute costs climb fast at real production volume.
| Attribute | n8n | Retell AI |
|---|---|---|
| Category | Automation | Automation |
| Pricing | freemium | freemium |
| Pricing Detail | Free (self-hosted) / €20/mo Cloud Starter / €50/mo Cloud Pro | Pay-as-you-go from $0.07-0.31/min / Enterprise custom |
| Rating |
Key Features
n8n
- 400+ integrations
- AI nodes (LangChain)
- Self-hosting option
- Code nodes (JavaScript/Python)
- Complex branching logic
- Natural-language AI Assistant for building workflows
Retell AI
- Inbound and outbound calling
- Visual call flow builder
- CRM integrations
- Call recording and transcripts
- Phone number provisioning
- Real-time analytics
Pros
n8n
- •Open source and self-hostable
- •More powerful than Zapier for technical users
- •AI nodes are excellent
- •Great value vs Zapier
Retell AI
- •Full-stack voice solution, less infrastructure than building from components
- •Visual workflow builder requires no code for call logic
- •Strong integrations with healthcare and real estate tools
Cons
n8n
- Higher technical bar than Zapier
- Self-hosting requires maintenance
- Debugging complex flows can be hard
Retell AI
- Per-minute costs scale quickly at production volume
- Less model flexibility than raw API alternatives