PromptLayer
PromptLayer is a platform for teams that build and improve AI products.
What PromptLayer is
PromptLayer is a platform for teams that build and improve AI products. It combines a prompt registry and visual prompt CMS with evaluations, observability, and agent tracing. Teams can edit, version, test, and deploy prompts through a visual workflow without waiting for an application redeploy, making it possible for domain experts and non-technical stakeholders to work alongside engineers. Evaluations can run when a prompt version changes, through the API, or on demand in the UI; they include historical backtests and side-by-side model comparisons. PromptLayer tracks requests, traces, cost, latency, token use, scores, and custom metadata, and supports OpenTelemetry spans. Its OpenAI integration includes versioned prompts, release labels, evaluations, observability, and model comparisons. Free, Pro, and Team plans are hosted in the US; Enterprise offers self-hosting on GCP, AWS, or Azure, EU cloud hosting, or single-tenant cloud hosting. Free costs nothing; Pro is $49 a month and Team is $500 a month. Enterprise pricing is custom.
Good
- Edit and deploy prompts without an application redeploy.
- Run evaluations through the API or UI.
- Track cost, latency, token use, and traces.
- Enterprise offers flexible hosting options.
- Provider-agnostic, with prompt versioning and approval workflows.
Watch out
- Free plan is limited to 10 prompts.
- Free plan allows 10 playground runs per day.
- Webhooks are limited to Team and Enterprise.
- Pro costs $49 a month.
Who it suits
PromptLayer suits engineers and domain experts who need to manage prompts and evaluate AI products together. Its enterprise hosting and access-control options may suit teams with specific deployment or governance needs.
Verdict
PromptLayer brings prompt editing, evaluation, and runtime observability into one workflow for AI teams. The Free plan has usage limits, while Enterprise offers custom limits and flexible hosting.
Plans and prices
From PromptLayer's own pricing page, checked 30 Sep 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 5 users · 2.5k requests/month · 1 workspace · 250 eval cell executions/month · 10MB max per dataset · per month |
| Pro | $49 a month | 5 users · 2.5k+/month requests · unlimited workspaces and playgrounds · 150MB max per dataset · $0.003 per txn overage · per month |
| Team | $500 a month | 25 users · 100k+/month requests · 7.5k+/month eval cell executions · unlimited workspaces and playgrounds · 1GB max per dataset · $0.002 per txn overage · per month |
| Enterprise | Priced on request | Custom limits · RBAC · deployment approvals · HIPAA with BAA · flexible hosting · dedicated support · data retention control · Custom |
The facts
Each one read from PromptLayer's own pages, with the date it was checked.
What it does
- Collaboration
- The visual workflow is designed to let domain experts and non-technical stakeholders edit prompts alongside engineers.checked 30 Sep 2026
- Evaluation
- Evaluations can be triggered on new prompt versions, through the API, or ad hoc in the UI, and include historical backtests and side-by-side model comparisons.checked 30 Sep 2026
- Hosting
- Free, Pro, and Team are cloud-hosted in the US; Enterprise offers self-hosting on GCP, AWS, or Azure, EU cloud hosting, or cloud-hosted single tenancy.checked 30 Sep 2026
- Integrations
- The LangChain integration exports traces through OpenTelemetry and supports cost and latency analytics, searchable metadata, and turning traces into evaluation datasets.checked 30 Sep 2026
- Intended users
- PromptLayer describes its platform as serving engineers and domain experts who build and improve AI products together.checked 30 Sep 2026
- Notable limits
- Free includes 10 prompts and 10 playground runs per day, while webhooks are available on Team and Enterprise plans.checked 30 Sep 2026
- Observability
- PromptLayer tracks requests, traces, cost, latency, token usage, scores, and custom metadata, with OpenTelemetry span support.checked 30 Sep 2026
- Product
- PromptLayer combines a prompt registry and visual prompt CMS with LLM evaluations, observability, and agent tracing.checked 30 Sep 2026
- Prompt management
- Teams can visually edit, version, test, and deploy prompts without waiting for an application redeploy.checked 30 Sep 2026
- Security and compliance
- PromptLayer states that it maintains SOC 2 Type 2, HIPAA, and GDPR compliance; its pricing FAQ also lists CCPA certification.checked 30 Sep 2026
- Support
- The pricing comparison lists basic support for Free, Pro, and Team, and dedicated support for Enterprise.checked 30 Sep 2026
The company
- Headquarters
- PromptLayer says it is located in New York City.checked 30 Sep 2026
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