From $39 per user/month · Free plan🇺🇸
Prompt and Context Hub with versions, playground and AI chat, plus tracing and evals for LLM agents, in the cloud (US, EU) or self-hosted.
PromptLayer AI features, pricing and GDPR (October 2026)
Prompt registry from New York for editing and versioning prompts without a code release, with evaluations and monitoring.
FreemiumFree plan
from $49 per month
Pricing details
Free at $0 (5 users, 2,500 requests per month), Pro at $49 per month, Team at $500 per month, Enterprise on request with SSO, self-hosting and EU hosting.
What is PromptLayer?
PromptLayer is a platform for managing prompts as versioned assets, testing them and monitoring how they perform in production. It lets product, marketing or content experts change prompts without waiting for an engineering release.
PromptLayer is headquartered in New York City. Its prompt registry works like a content management system: prompts are edited visually, versioned and fetched by the application at runtime. Evaluations run dataset-backed tests, human reviews and automated grading before a change goes live, and observability links cost, latency and token usage to specific prompt versions. Agent tracing covers multi-step workflows. Integrations include OpenAI, Anthropic, Google Gemini, LangChain and LlamaIndex. PromptLayer lists SOC 2 Type 2 and HIPAA and GDPR compliance, and names customers such as DocuSign and Gorgias.
PromptLayer AI features and use cases
- Changes prompts without a releasePrompts live in the registry and the application requests the current version. Domain experts can adjust wording several times a day while engineers keep control of the code.
- Grades outputs before launchEvaluations run a new prompt version against a dataset and score the outputs automatically or with human reviewers. Teams see whether a change helps or hurts before customers do.
- Tracks cost per prompt versionProduction traces link each call to its prompt version with cost, latency and tokens. Teams spot expensive or slow prompts and roll back when needed.
What sets PromptLayer apart
- Designed for non-engineers to edit prompts in a visual editor.
- Enterprise customers can self-host on GCP, AWS or Azure or use a single-tenant deployment.
- EU hosting is offered as an Enterprise option.
Where PromptLayer is strongest
United States Available internationally
PromptLayer is headquartered in New York City.
Questions to ask before you buy PromptLayer
Production traces can contain user inputs, so decide what is logged and where it is stored. EU hosting, SSO and self-hosting are Enterprise features; smaller plans run in the US cloud. Check request and evaluation limits of the Free and Pro plans against your volume.
Using PromptLayer in the EU: GDPR and AI Act
- Data locationMultiple regions, EU region available (according to the vendor). Hosting regions: United States, EU.
- Data processing agreementNot published by the vendor: ask for one (Art. 28 GDPR).
- EU AI ActCheck whether the AI prepares decisions about people. If not, the high-risk rules usually do not apply. The high-risk obligations apply from December 2, 2027 (Digital Omnibus).
General information with sources, not legal advice.
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Questions about PromptLayer
Is there a free plan?
Yes. It includes 5 users, 2,500 requests and 250 evaluation cell executions per month.
Can data be hosted in the EU?
EU hosting is available for Enterprise customers as an alternative to the US cloud.
Which certifications does PromptLayer hold?
PromptLayer states SOC 2 Type 2 certification and HIPAA and GDPR compliance.
PromptLayer update historyno updates yet
No changes recorded for PromptLayer yet.
Changes the vendor made and confirmed user reports, each checked against the vendor's own pages. We review every tool monthly.
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