n8n is a fair-code-licensed workflow automation platform combining a visual, node-based editor with the option to add custom code where needed, plus built-in LLM/AI-agent nodes for building AI-driven workflows. Its defining feature is execution-based billing: an entire multi-step workflow run counts as a single "execution" regardless of how many steps it contains, which tends to make it far cheaper than per-task competitors like Zapier for complex automations. It can be run entirely free via self-hosted Community Edition (open source, MIT-style fair-code license) or through n8n Cloud, priced (as of mid-2026) at roughly $20–24/month (Starter, ~2,500 executions), $50–60/month (Pro, ~10,000 executions), and a self-hosted Business plan around $800/month (SSO, Git version control, advanced permissions); Enterprise is custom-priced by execution volume.