Mug vs n8n

n8n is an open-source workflow automation platform with 1,000+ integrations, a visual builder with code nodes, sub-workflows, and error handling. The LangChain-based AI agent builder supports tool use, memory, and multi-model routing — the most mature AI agent builder in visual automation.

Per-execution pricing is the fairest model in automation — a workflow run counts as one execution regardless of step count. Self-hosting gives you unlimited executions, full data control, and zero license fees. The open-source community and transparent development build real trust.

The trade-off is infrastructure ownership and what's bundled beyond the workflow engine. n8n Community Edition means running Docker on a VPS ($50-150/month), managing backups, security patches, and monitoring uptime. Cloud tiers have hard stops — workflows halt when you hit the execution cap with no overage option.

Data Tables provide 50MB total, no SQL, no joins, no API access. No email delivery, no SMS, no Slack apps, no portals. No multi-tenancy — each client needs a separate instance or shares a workspace.

Mug is fully managed with zero infrastructure. SQLite with cross-source JOINs, built-in email and SMS, headless surfaces, and per-workspace isolation with wholesale pricing for consultants.

Mug wins when you don't want to run infrastructure — no Docker, no VPS, no backups to manage. It's the better fit when you need a real SQL database instead of 50MB of basic tables, when results need to reach people via email, SMS, and Slack without logging in, and when multiple workspaces need to stay isolated with one-command deployment. If cloud n8n's hard execution cap is already a problem, Mug's flex overages keep workflows running.

Is n8n really free?

The Community Edition (self-hosted) is genuinely free with unlimited executions and all integrations. But you pay for infrastructure — a VPS, backups, and your time managing Docker. Cloud tiers cap executions and scale with usage. Mug is fully managed with 1,000,000 operations on Starter — no infrastructure to maintain.

What happens when n8n hits the execution limit?

On cloud tiers, workflows stop — they halt until the next billing cycle. No overage option on lower tiers. The self-hosted Business tier can buy additional executions but at a steep premium. Mug offers per-unit flex overages so workflows keep running.

Can AI agents build n8n workflows?

Partially. As of April 2026, n8n's MCP server can build workflows via TypeScript generation — a meaningful step forward. But it's a bridge pattern: AI generates code that calls the n8n API. Mug workspaces are TypeScript files that AI agents edit directly.

Does n8n have a database?

Data Tables (2025) provide basic storage backed by SQLite — but 50MB total, no SQL queries, no joins, no API access, documented race conditions. Mug includes full SQLite with cross-source JOINs starting at 250,000 records.