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

# Introduction

> OpenTrain AI connects employers with skilled AI trainers / data labelers worldwide.

OpenTrain AI is a hiring platform built specifically for AI training work: data labeling, annotation, RLHF, fine-tuning, and other tasks that go into building reliable AI systems.

If you need people to label your data, annotate your datasets, or train your models, you post a job. If you do that kind of work, you build a profile and apply.

## Who it's for

**Employers** are companies and teams that need AI training talent. You post jobs, review candidates, run AI-powered screening, and pay your hired AI trainers through the platform.

**AI trainers (data labelers)** are the people who do the work. You set up your profile, upload your resume, and apply to jobs that match your skills — whether you work independently or as part of an agency.

## How it works

1. **Sign up** at [app.opentrain.ai](https://app.opentrain.ai) and choose your account type.
2. **Set up your account** — employers complete a short profile; AI trainers go through a multi-step onboarding wizard that captures your experience, skills, education, and hourly rate.
3. **Post or apply** — employers publish job listings and receive candidate proposals; AI trainers browse matched jobs and submit applications.
4. **Work and get paid** — communicate through the built-in messaging system, track work via milestones, and receive payment to your connected bank account.

## Key features

* **AI-powered job matching** — the platform surfaces the most relevant candidates for each job based on skills, experience, and language capabilities.
* **Resume autofill** — AI trainers upload a resume and the platform auto-populates their profile fields, reducing manual data entry.
* **Structured AI screening** — employers configure interview questions; candidates answer them before submitting proposals, giving you structured data to review.
* **Agency onboarding** — teams of AI trainers can onboard as an agency, with company-level profiles covering headcount, security credentials, and pricing.
* **Milestone-based payments** — employers pay through milestones; AI trainers add a payout method through OpenTrain and receive payouts in [supported payout countries](/payments/payout-country-availability).
* **Integrated messaging** — proposal messages and job-channel conversations keep all communication in one place.

## Where to go next

<CardGroup cols={2}>
  <Card title="For employers" icon="briefcase" href="/employers/overview">
    Post jobs, review candidates, and manage your team.
  </Card>

  <Card title="For AI Trainers" icon="brain" href="/trainers/overview">
    Complete your profile, find projects, and get paid.
  </Card>
</CardGroup>