What is a prompt registry?

A centralized repository for storing, versioning, and managing an organization's prompts. It acts as a single source of truth, allowing teams to discover, reuse, and collaborate on prompts.

Who uses one?

AI engineers managing and versioning production prompts

What does it cost?

Pricing varies. The cheapest provider in our Top 11 starts around $500/mo. See the cheapest providers ranked.

How do I pick one?

Read the full methodology for our 9.4-point scoring framework, then look at the canonical Vellum vs Humanloop vs PromptLayer: 11 Best Prompt Engineering & Prompt Management Tools 2026. If you want a slice of the ranking by price, fit, or compliance, jump to: cheapest · highest-rated · fastest onboarding.

Source: Top 11 Vellum vs Humanloop vs PromptLayer: 11 Best Prompt Engineering & Prompt Management Tools 2026, verified May 31, 2026.