> ## Documentation Index
> Fetch the complete documentation index at: https://promptlayer-1023-gorgias-docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Welcome to PromptLayer

> PromptLayer is the largest platform for prompt engineering

Building a Twitter demo is easy, we help you build real AI apps with robust monitoring, prompt versioning, cost analysis, and ways to evaluate the effectiveness of prompts.

Start logging, organizing, and evaluating your prompts with one line of code. PromptLayer is a product for the whole team, both software engineers and non-technical project managers.

Welcome to the PromptLayer docs. Explore guides and tutorials to monitor, observe, and evaluate your prompts using PromptLayer.

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">
    Get started in less than 5 minutes.
  </Card>

  <Card title="Tutorial" icon="rocket" href="/getting_started">
    Learn how to use PromptLayer and build your first project.
  </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-templates/prompt-registry">
    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>