PromptLayer

Developer Toolspromptlayer.com

Prompt engineering and LLM observability

Developer ToolsOpen SourceFree tier
Rating
New
0 reviews
Saved
0
users saved
Pricing
Free tier; Pro at $150/month; Enterprise custom
Free tier available
Platform
Web · Python SDK
API available

Overview

PromptLayer — Prompt engineering and LLM observability

PromptLayer is a platform for prompt engineering and LLM observability. It tracks all API requests to LLM providers, enables prompt versioning and A/B testing, provides cost analytics, and includes visual prompt templates for non-technical teams to manage AI prompts.

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Prompt versioning and templates

LLM request tracking

Cost analytics

A/B testing for prompts

Features & capabilities

Everything it does, in plain English.

FeaturePrompt versioning and templatesIncluded
FeatureLLM request trackingIncluded
FeatureCost analyticsIncluded
FeatureA/B testing for promptsIncluded
FeatureVisual prompt editorIncluded
FeatureOpenAI and Anthropic supportIncluded
FeatureEvaluationsIncluded
API AccessProgrammatic access available for developers.Available
PlatformsWeb · Python SDK

The honest take

Where it shines, where it stumbles.

✓ Pros

  • ✓Easy prompt versioning
  • ✓Good for non-technical prompt editing
  • ✓Clear cost analytics
  • ✓Simple to integrate

! Watch-outs

  • !Less comprehensive than Langfuse
  • !Limited evaluation capabilities
  • !Smaller community

Who it's for

Where PromptLayer pays for itself fast.

— Use case
Prompt management and versioning
— Use case
LLM cost optimization
— Use case
Team prompt collaboration
— Use case
Production LLM monitoring

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