PromptLayer
Prompt management and evaluation platform for AI teams
- Freemium· from $49/month
- Web
- API Available
- Open Source

What is PromptLayer?
PromptLayer is a Prompt Management tool. Prompt management and evaluation platform for AI teams. PromptLayer is freemium: it has a free plan, and paid plans start at $49/month. It is available on Web App. It is aimed at ai teams, data scientists and developers.
PromptLayer is a platform for managing and evaluating AI prompts. It allows teams to track, debug, and replay prompts, run LLM evaluations, and monitor agents in production with tracing, logs, and regression sets. It supports versioning, cost tracking, and deployment through SDK and REST API.
Built for ai teams, data scientists and developers.
Features
Prompt Management
Manages and versions AI prompts for teams
LLM Evaluations
Agent Observability
Cost Tracking
Tracks cost, latency, and token usage
Prompt Deployment
Deploys prompts via SDK and REST API
AI Visual Editor
Prompt A/B Testing
Tests different prompts for performance
Prompt Versioning
Use cases
- Track and debug AI prompts
- Evaluate and test AI prompts
- Monitor AI agents in production
- Deploy prompts through SDK and REST API
- Version AI prompts for team collaboration
Who it's for
Pros & cons
Pros
- Free plan available
- Public API available
Cons
No documented limitations yet.
Pricing
Freemium — paid plans start at $49/month.
| Plan | Price |
|---|---|
| Free | Free |
| Pro | $49 / month |
| Team | $500 / month |
| Enterprise | $0 |
Developer & API
Public REST API available
- Webhooks
- Supported
Open source· Apache-2.0· 785 stars· 95 forks
Security & compliance
- SOC 2
- GDPR
- HIPAA
- Data deletion
As stated on PromptLayer's website — not independently verified by AiByts.
FAQ
What is PromptLayer?
PromptLayer is a Prompt Management tool. Prompt management and evaluation platform for AI teams. PromptLayer is a platform for managing and evaluating AI prompts. It allows teams to track, debug, and replay prompts, run LLM evaluations, and monitor agents in production with tracing, logs, and regression sets. It supports versioning, cost tracking, and deployment through SDK and REST API.
Is PromptLayer free?
PromptLayer has a free plan; advanced features require a paid plan.
How much does PromptLayer cost?
PromptLayer offers 4 plans: Free (Free), Pro ($49 / month), Team ($500 / month) and Enterprise ($0).
Does PromptLayer have an API?
Yes, PromptLayer offers a public REST API with webhooks for building custom integrations.
What platforms does PromptLayer support?
PromptLayer is available on Web App.
Who should use PromptLayer?
PromptLayer is built for ai teams, data scientists and developers. Common uses: track and debug AI prompts, evaluate and test AI prompts, monitor AI agents in production and deploy prompts through SDK and REST API.
Is PromptLayer open source?
Yes, PromptLayer is open source under the Apache-2.0 license.
What are the best alternatives to PromptLayer?
Similar tools on AiByts include HandyAI, manifest.build, Oracle AI, GPT4All and Kimi Business.
Details are compiled from PromptLayer's website and public sources, last verified Oct 3, 2026. Features and pricing change — confirm on the official site before you buy.
Try PromptLayer
Freemium · from $49/month
Tags
- Prompt Management
- Prompt Versioning
- LLM Observability
- Agent Observability
- Prompt Testing
Comments
Sign in to join the discussion.