Prompt & EvalCommercial✦ Free Tier

PromptLayer

Prompt versioning, logging, and A/B testing

App Infrastructure
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About

Log every LLM request, version prompts, and run A/B tests. Provides a visual interface for prompt engineering teams to iterate collaboratively.

Choose PromptLayer when…

  • •You want prompt versioning and request logging
  • •Prompt history, replay, and A/B testing matter
  • •You need visibility into what prompts are running in production

Builder Slot

How do you know it's working?Optional for most stacks

Tests, evals, and experiment tracking to measure and improve your AI output quality

Dev Tools
Not applicable
App Infra
Recommended
Hybrid
Optional

Other tools in this slot:

PromptFooDeepEvalRAGASVellumAgentaTruLensHumanloopInspect

Stack Genome Detection

AIchitect's Genome scanner detects PromptLayer in your project via these signals:

pip packages
promptlayer
env vars
PROMPTLAYER_API_KEY

Alternatives to consider (2)

Langfusecompare →Humanloopcompare →

Pricing

✦ Free tier available
ProPaid

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PromptLayer on AIchitect[![PromptLayer](https://aichitect.dev/badge/tool/promptlayer)](https://aichitect.dev/tool/promptlayer)

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