About PromptLayer
PromptLayer is a platform for managing prompts, running evaluations and tracing AI agents. It is built so that domain experts can edit prompts without touching the application code.
What it does
PromptLayer keeps prompts in a registry with versions and a visual editor. Changes can be deployed without redeploying the app. Dataset-backed evaluations, human review and automated graders can run before a change goes live. Production traces are linked to the prompt versions that produced them, so teams can see cost, latency and token use. Regression sets help catch problems that an earlier version already solved.
Key features
- Version prompts and deploy changes without an app redeploy
- Visual editor for prompt changes
- Dataset-backed evaluations before changes ship
- Traces linked to prompt versions, with cost and latency
- Regression sets to catch repeated problems
Who it's for
The platform suits AI engineering teams that work with product managers or domain experts on prompts. A developer who keeps all prompts in code and never changes them may not need it.
Pricing and good to know
The site offers a free sign-up and a request-a-demo option. Teams that keep prompts outside the codebase should plan how they will test and roll back changes, since the registry becomes part of the release process.
Highlights
- Version prompts and deploy changes without an app redeploy
- Visual editor for prompt changes
- Dataset-backed evaluations before changes ship
- Traces linked to prompt versions, with cost and latency
- Regression sets to catch repeated problems
