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

# Prompt Hub

> Manage, iterate, and deploy your prompts in one place

## What is Prompt Hub?

Prompt Hub is a centralized repository for teams to manage, iterate, and deploy prompt templates. It's a collaborative workspace to version control templates and use them across playground, tasks, APIs, and experiments.

<Info>
  Access our Prompt Hub [API reference here](/docs/api-clients/python/version-7/prompt-hub-api)
</Info>

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  <img src="https://storage.googleapis.com/arize-phoenix-assets/assets/images/prompt-hub.gif" alt="" />
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## Why Use the Arize Prompt Hub?

The Arize Prompt Hub transforms prompt management from scattered code snippets into a rigorous engineering discipline. It serves as a centralized, search-friendly repository for your entire ecosystem of prompts, allowing you to track their evolution through immutable version control.

* **Unified Prompt Ecosystem**\
  Stop hunting through slack messages or codebase comments. Store every "Prompt Object", including template variables, model parameters, and tool definitions, in a single, searchable repository that tracks past, present, and future versions of your assets.
* **Immutable Version Control**\
  Treat prompts with the same rigor as code. Every refinement creates an immutable, hashed version, allowing you to safely rollback changes, reproduce past results, and tag specific versions (e.g., prod-v1.2) for deployment without ambiguity.
* **Rapid Experimentation & Comparison**\
  Close the iteration loop by loading any prompt version directly into the Playground. Test changes against real-world spans or golden datasets, and use **side-by-side comparison** to visually diff outputs and verify improvements before merging.
* **Compatible, Easy-to-Use SDK**\
  Seamlessly push and load prompts in code, allowing easy use within your applications.
* **Automated Prompt Optimization**\
  Move beyond manual tweaking. **Optimize** **underperforming prompts** into to let the system leverage feedback loops and meta-prompting, automatically generating and ranking better variations for you.

## What is a Prompt Object?

At Arize, we expand the definition of a prompt to a **Prompt Object**, which consists of everything a complete prompt entails.

* Prompt Template - system, user, and assistant messages that make up the LLM's context
* Invocation Parameters - temperature, frequency penalty, top p/k, etc.
* Tools/Functions - specific APIs, programmatic functions, or outside functionality
* Response Format (aka output schema) -> configure specific JSON output

Prompt Hub stores Prompt Objects, going further than just simple prompt templates. This makes it easy to load

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## Get Started

<CardGroup cols={2}>
  <Card title="Create a Prompt" href="/docs/ax/prompts/prompt-hub/create-a-prompt" icon="plus" />

  <Card title="Version Control" href="/docs/ax/prompts/prompt-hub/version-control" icon="pen" />
</CardGroup>