PromptLayer

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Score6.8

Rank#12 of 29

From$49/mo

Free planYes

Runs onAPI, Self-hosted, Web

Summary

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 0.00 USD per month; Pro is 49.00 USD per month and Team is 500.00 USD per month. Enterprise pricing is custom.

Who it is for

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.

What is 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.

What to know first

Free plan is limited to 10 prompts.
Free plan allows 10 playground runs per day.
Webhooks are limited to Team and Enterprise.
Pro costs 49.00 USD per month.

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.

PromptLayer plans and pricing

All plans

Free Free per month 5 users · 2.5k requests/month · 1 workspace · 250 eval cell executions/month · 10MB max per dataset promptlayer.com · 30 Sept 2026

Pro $49/mo per month 5 users · 2.5k+/month requests · unlimited workspaces and playgrounds · 150MB max per dataset · $0.003 per txn overage promptlayer.com · 30 Sept 2026

Team $500/mo per 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 promptlayer.com · 30 Sept 2026

Enterprise Not published Custom Custom limits · RBAC · deployment approvals · HIPAA with BAA · flexible hosting · dedicated support · data retention control promptlayer.com · 30 Sept 2026

Compared on AI prompt generators

Free plan: Yespromptlayer.com
Paid from: $49/mopromptlayer.com

Facts

Product: PromptLayer combines a prompt registry and visual prompt CMS with LLM evaluations, observability, and agent tracing.promptlayer.com · 30 Sept 2026
Prompt management: Teams can visually edit, version, test, and deploy prompts without waiting for an application redeploy.promptlayer.com · 30 Sept 2026
Collaboration: The visual workflow is designed to let domain experts and non-technical stakeholders edit prompts alongside engineers.promptlayer.com · 30 Sept 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.promptlayer.com · 30 Sept 2026
Observability: PromptLayer tracks requests, traces, cost, latency, token usage, scores, and custom metadata, with OpenTelemetry span support.promptlayer.com · 30 Sept 2026
Integrations: The OpenAI integration supports versioned prompts, release labels, request observability, evaluations, and model comparisons.promptlayer.com · 30 Sept 2026
Security and compliance: PromptLayer states that it maintains SOC 2 Type 2, HIPAA, and GDPR compliance; its pricing FAQ also lists CCPA certification.promptlayer.com · 30 Sept 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.promptlayer.com · 30 Sept 2026
Support: The pricing comparison lists basic support for Free, Pro, and Team, and dedicated support for Enterprise.promptlayer.com · 30 Sept 2026
Notable limits: Free includes 10 prompts and 10 playground runs per day, while webhooks are available on Team and Enterprise plans.promptlayer.com · 30 Sept 2026
Intended users: PromptLayer describes its platform as serving engineers and domain experts who build and improve AI products together.promptlayer.com · 30 Sept 2026