Vellum
Low-code platform for prompts, workflows, evaluations and deployments with environment management for product teams.
| Category | Prompt Management |
| Open source | No |
| Self-hostable | No |
| Pricing model | freemium |
| Pricing notes | Free tier; reported paid plans from ~$25/mo, enterprise custom |
| Framework integrations | openai-sdk, anthropic |
| Funding / ownership | YC W23; $5M seed, later Series A |
Pricing/feature source: https://www.vellum.ai/pricing
Frequently asked questions
Is Vellum open source?
No — Vellum is a proprietary/commercial product.
Can I self-host Vellum?
No — Vellum is cloud-only; there is no self-hosted deployment.
How much does Vellum cost?
Freemium. Free tier; reported paid plans from ~$25/mo, enterprise custom