Reviewed by the Softwares.com Editorial Team · Last updated June 2026 · How we rate
Key facts
- Vendor
- Vellum AI
- Pricing
- Subscription — Custom
- Free tier
- No
- Platforms
- Web, Api
- Best for
- Developers, Ai Engineers, Smb
- Editor rating
- 4.5 / 5
- Founded
- 2023
- Headquarters
- San Francisco, CA, USA
What is Vellum?
Vellum is a ai machine learning tool from Vellum AI. Vellum is a development platform for building, evaluating, and deploying LLM-powered features with prompt engineering, testing, and workflow tools.
Vellum uses subscription pricing. Custom.
It's best suited to developers, ai-engineers, smb and runs on Web, Api.
Standout strengths include end-to-end llm dev lifecycle, visual workflow builder, built-in evaluation and versioning. Worth weighing: pricing is contact-sales, aimed at teams over solo devs.
Vellum pricing
Pros
- End-to-end LLM dev lifecycle
- Visual workflow builder
- Built-in evaluation and versioning
Cons
- Pricing is contact-sales
- Aimed at teams over solo devs
Vellum vs alternatives
Ready to try Vellum?
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Frequently asked questions
What is Vellum?
Vellum is a development platform for building, evaluating, and deploying LLM-powered features with prompt engineering, testing, and workflow tools.
How much does Vellum cost?
Vellum is subscription-priced.
Does Vellum have a free trial?
Vellum does not advertise a free trial.
What platforms does Vellum support?
Vellum is available on Web, Api.