What is Vellum used for?

Vellum is an AI company whose listing describes a platform for building and testing LLM prompts and workflows, while its current site presents a personal AI assistant with persistent memory. It is a good fit for delegating routine personal and work tasks, and keeping an assistant that remembers preferences.

Yes. Vellum has a free plan, and paid plans start at $30 per month. A free trial is also available.

Is Vellum open source?

No. Vellum is proprietary (closed-source) software. Open-source alternatives to Vellum include Dify, Langflow and Langfuse.

Can I self-host Vellum?

Yes. Although Vellum is closed source, it can be self-hosted on your own servers, and the vendor also offers a hosted version.

What are some alternatives to Vellum?

Vellum competes with LangSmith, Braintrust and Portkey. For open-source options, see Enlisted's ranked list of open-source Vellum alternatives.

Vellum: features, pricing and alternatives

About Vellum

Vellum is listed as a platform for building, testing and monitoring LLM prompts and workflows, which is how it was historically known to AI developers. Its current homepage, however, presents something different: a personal AI assistant that learns a user's preferences and takes on routine tasks.

According to the site, the assistant is meant to be shaped by its user, to remember people, preferences and work across conversations, and to be reachable on any device or browser with the same identity, schedules and chats. Its memory and credentials vault can live locally on the user's machine or in the cloud, and the vendor says data is not accessible to it unless the user opts in. The assistant asks permission before tasks that carry security risks until they are marked as trusted.

Vellum is a proprietary commercial product with downloads, a pricing page and community resources. Because the homepage and listing describe different products, check the vendor's site for the current offering before relying on this entry.

Key features

Personal AI assistant with persistent memory
Customizable personality and behavior
Available across devices and browsers
Local or cloud storage of memory and credentials
Permission prompts for risky tasks

Good fit for

→Delegating routine personal and work tasks
→Keeping an assistant that remembers preferences

Tags: ai-assistant; llm; agents; memory; personal-assistant; prompt-engineering; workflows; ai-infrastructure

Vellum: questions and answers

What is Vellum used for?: Vellum is an AI company whose listing describes a platform for building and testing LLM prompts and workflows, while its current site presents a personal AI assistant with persistent memory. It is a good fit for delegating routine personal and work tasks, and keeping an assistant that remembers preferences.
Is Vellum free?: Yes. Vellum has a free plan, and paid plans start at $30 per month. A free trial is also available.
Is Vellum open source?: No. Vellum is proprietary (closed-source) software. Open-source alternatives to Vellum include Dify, Langflow and Langfuse.
Can I self-host Vellum?: Yes. Although Vellum is closed source, it can be self-hosted on your own servers, and the vendor also offers a hosted version.
What are some alternatives to Vellum?: Vellum competes with LangSmith, Braintrust and Portkey. For open-source options, see Enlisted's ranked list of open-source Vellum alternatives.