Tool overview
PromptLayer is listed under AI Governance Safety & Evaluation AI tools.
What is PromptLayer?
PromptLayer provides a shared prompt registry, visual evaluations, datasets, workflows, request logs, traces, and release labels. Teams can manage and deploy prompts through a web workspace, REST API, Python and JavaScript SDKs, MCP, and enterprise hosting options.
Best for
Cross-functional AI teams managing prompts, evaluations, and production traces
Who is it for?
Decision note
Rebuilt from the original export under the complete V411 factual-source-verification workflow. Preview only. Apply remains blocked until Failures = 0, Warnings = 0, Unmapped = 0, Missing = 0, all explicit clears are reviewed, image import is disabled or V380 accepts the asset, one representative WordPress edit screen is compared with the export and proposed row, and a post-Apply zero-change Preview is completed.
Key features
Prompt registry and release labels
Visual evaluations and reusable datasets
Workflows, request logs, and traces
REST API, SDKs, MCP, and webhooks
Use cases
Version prompts outside code
Run regression and backtesting workflows
Trace model requests and costs
Deploy approved prompts by environment
Pros
- Free plan supports five users
- Public Pro and Team pricing
- Enterprise self-hosted and single-tenant options
Limitations
Prompt and trace data can contain sensitive customer information and require retention and access controls.
Evaluation scores can be misleading when datasets, graders, or historical traces are not representative.
Pricing details
Billing options
Pricing note
Free supports five users and 2,500 monthly requests. Pro is $49 per month with $0.003 transaction overage. Team is $500 per month with $0.002 transaction overage. Enterprise is custom.
Supported languages
- English
Integrations
OpenAI
Anthropic
Model providers
OpenTelemetry
Webhooks
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