How much does Vellum cost in 2026?
Quick Answer: Vellum offers a free Developer tier with limited requests, paid Pro plans at approximately $500/month, and custom Enterprise pricing as of April 2026.
Vellum Pricing in 2026
Vellum publishes a tiered structure on its public pricing page (April 2026). Plans are billed monthly with annual discounts available on Pro and Enterprise.
Developer (Free)
The free tier provides access to the Prompt IDE, a small monthly request quota, and basic evaluation runs. It is intended for individual developers prototyping LLM features. Storage of test cases and deployment versioning are limited.
Pro (Approximately $500/month)
Pro adds higher request quotas, the full Evaluations suite for regression testing, the Workflows visual builder for chaining LLM calls, and team collaboration with role-based access control. Most early-stage startups shipping a single AI feature land on this tier.
Enterprise (Custom)
Enterprise pricing is quoted based on usage volume and adds SSO, audit logs, on-prem or VPC deployment options, dedicated support, and custom SLAs. Pricing typically starts in the low five figures per month for large LLM applications.
Cost Considerations
Vellum charges a platform fee on top of the underlying LLM API costs (OpenAI, Anthropic, etc.), which the customer pays directly to model providers. Total cost for a production application is the Vellum subscription plus model token spend, which can dominate the bill for high-volume features.
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