# Source: https://docs.promptlayer.com/introduction.md

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.promptlayer.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Welcome to PromptLayer

> PromptLayer is the largest platform for prompt engineering

PromptLayer is the most popular platform for prompt management, collaboration, and evaluation.

Teams use PromptLayer to build AI applications with domain knowledge. Our users range from machine learning engineers to lawyers to non-technical content writers.

Create and manage prompts through our visual dashboard ([why use a prompt CMS?](/why-promptlayer/prompt-management)). Programmatically retrieve prompt templates. Log request history and enrich those requests with metadata.

Welcome to the PromptLayer docs. Happy prompting 🍰

Stay up to date by following us on [Twitter](https://twitter.com/promptlayer) and joining the [Discord](https://discord.gg/DBAhQbW39S).

## Getting Started

Install and use PromptLayer on the most popular platforms

<CardGroup cols={2}>
  <Card title="Quickstart" icon="flag-checkered" href="/quickstart">
    Learn how to use PromptLayer and build your first project.
  </Card>

  <Card title="Tutorial Videos" icon="video" href="/tutorial-videos">
    Watch tutorial videos to get started with PromptLayer.
  </Card>
</CardGroup>

## Getting help

The fastest way to ask questions is through [Discord](https://discord.gg/DBAhQbW39S).

You can also always contact us at [hello@promptlayer.com](mailto:hello@promptlayer.com) 👋

## Features

Learn about all the cool things PromptLayer can help you do

<CardGroup cols={2}>
  <Card title="Prompt Registry" icon="notebook" href="/features/prompt-registry/overview">
    Version and create prompt templates visually. Programmatically retrieve them.
  </Card>

  <Card title="Evaluate Prompts" icon="ranking-star" href="/features/evaluations/overview">
    Batch run prompts against sample input datasets. Build regression tests, one-off batches, or backtest new prompts.
  </Card>

  <Card title="Advanced Search" icon="magnifying-glass" href="/why-promptlayer/advanced-search">
    Learn how to find requests using metadata and tags on our dashboard.
  </Card>

  <Card title="Analytics" icon="chart-pie-simple" href="/why-promptlayer/analytics">
    Understand high-level analytics of your LLM usage.
  </Card>
</CardGroup>