PromptLayer
PromptLayer: A mature prompt CMS for teams managing versions, evaluations, releases, and observability. Ranked #4 of 26 in Prompt Management Software by our editors (9.1/10); pricing: Free plan; best for mature prompt registries and release workflows.
At a glance
- Editor score9.1 / 10
- PricingFree plan
- Best forMature prompt registries and release workflows
- Free planYes
- Paid from$49/mo
- Prompt versioningYes
- Facts checked20 Sep 2026
Where it wins
- Versioning includes diffs, comments, notes, and rollback
- Regression testing, evaluations, human review, and automated graders
- Supports web, API, self-hosted, and major AI providers
Where it doesn't
- Pro starts at $49 per month
- Free is limited to 5 users and 2.5k monthly requests
- Advanced controls such as RBAC and approvals require Enterprise
Our verdict on PromptLayer
PromptLayer is an AI engineering platform for managing prompts and agent workflows outside application code. Its visual prompt CMS and central registry are designed for engineers and domain experts who need shared prompt management across development and production. Teams can store prompt versions, compare changes, apply release labels, and retrieve prompts through SDKs or APIs. The product supports web, API, and self-hosted deployments, with integrations for OpenAI, Anthropic, Google, and xAI.
The strongest fit is for teams that need more than a prompt library. PromptLayer combines version history with diffs, comments, notes, rollback, automated regression testing, dataset-backed tests, human review, automated graders, and A/B testing. Its observability features cover cost, latency, tokens, and request logs, while webhooks can respond to prompt, dataset, evaluation, workflow, and skill events. These capabilities make it suited to release workflows where prompt changes need evaluation and monitoring before wider use.
Pricing starts with a Free plan at $0 per month for 5 users, 2.5k monthly requests, 1 workspace, 250 monthly evaluation cell executions, and a 10MB maximum dataset size. Pro costs $49 per month and adds unlimited playgrounds, unlimited workspaces, and a 150MB maximum dataset size. Team costs $500 per month and includes 25 users, 100k+ monthly requests, 7.5k+ monthly evaluation cell executions, a 1GB maximum dataset size, and webhooks. Enterprise adds custom limits, role-based access controls, deployment approvals, HIPAA with BAA, flexible hosting, and dedicated support. PromptLayer suits mature prompt operations; teams wanting only a lightweight prompt repository may find its testing and release focus unnecessary.
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PromptLayer pricing
All 4 PromptLayer plans and prices →
PromptLayer fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $49/mo |
| Prompt versioning | Yes |
| Prompt testing | Yes |
| Prompt templates | Yes |
| Approval workflows | Yes |
| Access controls | Yes |
| API or SDK access | Yes |
| Model provider support | Provider-agnostic |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Compliance & security | SOC 2, GDPR, HIPAA |
| Support | Email, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 4 integrations: OpenAI, Anthropic, Google, xAI |
| Pricing | Free plan (source) |
| Website | promptlayer.com |
| Facts checked | 20 Sep 2026 |
PromptLayer integrations
PromptLayer lists 4 integrations on its own site.
- OpenAI
- Anthropic
- xAI
Alternatives to PromptLayer
- PromptHubA full prompt-operations workspace for teams managing versions, testing, approvals, and APIs.9.4
- AgentaA flexible prompt operations workspace with open-source and hosted deployment options.9.3
- LangfuseA broad LLM operations platform for tracing, prompt evaluation, experiments, and cost tracking.9.2
See all PromptLayer alternatives →
PromptLayer vs the competition
- PromptLayer vs PromptHub
- PromptLayer vs Agenta
- PromptLayer vs Prompt Assay
- PromptLayer vs ProofHound
- PromptLayer vs PromptMetrics
- PromptLayer vs PromptVersions
Compare PromptLayer with any tool side by side →
Also Ranked In
PromptLayer is ranked in 7 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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