Vellum is listed under Workflow Automation, in the AI Agents & Automation category on Flocci AI Tools. Free builder tier with hosted agent apps, no card required. It is freemium — a usable free tier with paid plans above it, and it lives at vellum.ai.
Vellum is freemium: there is a free tier you can work in and paid plans above it. It is one of 391 freemium tools in the catalog, all labelled the same way so you are never surprised by a paywall.
Vellum does 3 things the catalog singles out: Free builder tier with hosted agent apps, no card required; prompt-engineering playground for side-by-side multi-model comparison; built-in evaluations framework with test banks and custom metrics for llm apps.
Langflow is the closest free alternative: it sits in the same Workflow Automation sub-category and is free. Windmill, Activepieces and Botpress also start free. The full list is on the alternatives page.
See the full list →