PromptLayer

Prompt registry, versioning and request logging for LLM apps.

Freemium Prompt Management & Testing promptlayer.com

About PromptLayer

PromptLayer treats prompts as first-class objects: a visual registry, version history, and logs of every request so you can see what changed.

Friendly for teams where non-engineers edit prompts.

FAQ

What is PromptLayer?

Prompt registry, versioning and request logging for LLM apps.

Is PromptLayer free?

PromptLayer has a free tier, with paid plans for more usage or features.

What are some alternatives to PromptLayer?

Agenta, Arize Phoenix, Braintrust, DeepEval, Google AI Studio.

Alternatives to PromptLayer

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Agenta

Open Source

Open-source platform for prompt management, evaluation and observability.

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Arize Phoenix

Open Source

Open-source tracing, evaluation and prompt playground for LLM apps.

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Braintrust

Freemium

Prompt management combined with evaluation and tracing.

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DeepEval

Open Source

Open-source framework for unit-testing LLM outputs.

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Google AI Studio

Free

Google’s free playground for writing and testing prompts with Gemini.

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Helicone

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Open-source LLM observability with prompt versioning and cost tracking.

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Langfuse

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Open-source LLM engineering platform with prompt management, tracing and evals.

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LangSmith

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LangChain’s platform for tracing, evaluating and managing prompts.

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Latitude

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Open-source platform for prompt engineering and AI agents.

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Lunary

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Open-source monitoring and prompt management for AI apps.

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Maxim AI

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End-to-end platform for prompt experimentation, evaluation and observability.

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MLflow Prompt Registry

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Open-source MLOps platform with GenAI tracing, evaluation and a prompt registry.

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