LLM & Agent Solutions / Supervised Fine-Tuning

Find and Hire Supervised Fine-Tuning Experts

Post a job and hire instruction data writers, domain SMEs, and QA reviewers who work inside your existing tools. 70+ languages and experts in coding, law, medicine, finance, and more. 100,000+ pre-vetted AI Trainers.

Post an SFT Job Large Project? → Managed Service

OpenTrain project dashboard for supervised fine-tuning showing pending and approved payouts with hired AI trainers specializing in coding documentation, creative writing, and customer support instruction data.

Why Top AI Teams Choose OpenTrain for Supervised Fine-Tuning

Writers to Domain SMEs

Instruction data writers, subject matter experts, and QA reviewers for any SFT project

Use Any Tool

AI Trainers work inside any annotation platform or custom internal environment you provide

Any Domain or Language

Coding, law, medicine, finance, and more across 70+ languages

All-In-One

One Place to Hire & Manage Your Supervised Fine-Tuning Team

Everything you need to build a team that delivers high-quality training examples, expert-verified gold answers, and production-ready SFT datasets that shape your model's behavior.

Post an SFT Job Large Project? → Managed Service

The #1 Network for SFT Talent

Instruction data writers, domain SMEs, and QA reviewers across 70+ languages. Coding, law, medicine, finance, and more. Find the right people for any SFT project.

Post an SFT Job

OpenTrain shortlist showing vetted supervised fine-tuning experts specializing in legal, medical, and finance instruction data available for hire with hourly rates.

Invite Hires Into Any Annotation Platform

AI Trainers work inside any labeling tool or your internal environment. You control access and permissions. Your data never leaves your systems.

Post an SFT Job

OpenTrain workspace showing shortlisted supervised fine-tuning experts from the US and Australia specializing in coding documentation, marketing content, and educational dialogues ready to invite into Argilla or your custom tool.

Communication and Project Hub

Built-in chat, instruction editor, and everything you need to coordinate SFT across distributed teams. Share rubrics, run calibration sets, and manage QA in one place.

Post an SFT Job

OpenTrain project hub for supervised fine-tuning showing shared instructions editor and team chat channel with 55 members.

Secure Global Payments and Transparent Pricing

Pay AI Trainers in any country from a single dashboard. You set the rates, we add a small fixed fee on top. No hidden costs, no chasing invoices.

Post an SFT Job

OpenTrain escrow payment interface showing funded milestone for supervised fine-tuning hours with hourly pricing and Stripe release button.

OpenTrain job posting interface for supervised fine-tuning showing tool selection and option to invite all qualified AI trainers.

Why OpenTrain

Hire AI Trainers for Any Supervised Fine-Tuning Domain

Post a job and get a shortlist of qualified instruction data writers, domain SMEs, and QA reviewers ready to work in any annotation platform or internal environment. Hire for:

Coding and software engineering across Python, JavaScript, SQL, and dozens of other languages

Legal and compliance for contract review, policy Q&A, and regulatory workflows

Medical and healthcare for clinical terminology, patient communication, and diagnostic reasoning

Finance and accounting for analyst workflows, financial reporting, and risk assessment

Creative writing, marketing, and content for style-matched outputs and brand voice

Post an SFT Job Large Project? → Managed Service

How It Works

How OpenTrain Works for Supervised Fine-Tuning

Create your account, post a job, and hire AI Trainers who work inside your existing tooling.

Post an SFT Job & Receive Pre-Vetted Applicants

Describe your project and the skills you need. Receive proposals from instruction data writers, domain SMEs, and QA reviewers with proven experience in your domain.

Hire and Add to Any Annotation Platform

Review candidates, make your hires, and invite them to any labeling tool or your internal environment.

Communicate and Pay in One Place

Share rubrics and style guides, message your team, and handle global payments from a single dashboard.

Post Your Supervised Fine-Tuning Job Now

Create an account and post your first job in minutes.

Post an SFT Job

Large Project? We Can Help.

Get a dedicated team managed end-to-end for large SFT projects.

Get a Managed Service Quote

Get Started

Start Building Your Supervised Fine-Tuning Team Today

Post your first job and connect with instruction data writers, domain SMEs, and QA reviewers who work inside any annotation platform or your own internal environment.

Post an SFT Job Large Project? → Managed Service

OpenTrain workspace dashboard for supervised fine-tuning showing 83 hired AI trainers, 24 completed projects, and team members specializing in API documentation, medical Q&A, and legal compliance responses.

Abstract visualization of orbital paths with glowing nodes representing data flow and model training iterations.

Metrics

Where AI Labs Hire for Supervised Fine-Tuning at Scale

The largest network of instruction data writers, domain SMEs, and QA reviewers, ready to work in any annotation platform or custom environment.

100K+

pre-vetted AI training specialists

50+

domains and specializations

24 hrs

avg. time from job post to production start

FAQ

FAQs about Hiring for Supervised Fine-Tuning

Quick answers to common questions about SFT data creation and AI Trainer hiring on OpenTrain.

What types of AI Trainers can I hire for supervised fine-tuning on OpenTrain?

You can hire instruction data writers who create high-quality prompt-response pairs and multi-turn conversations, domain SMEs who verify correctness in specialized fields like coding, law, medicine, and finance, and QA reviewers who enforce rubrics and maintain consistency across your dataset. Post a job describing your needs and receive proposals from AI Trainers with relevant experience.

What domains and languages do you cover?

Our network includes domain experts across coding, law, medicine, finance, creative writing, marketing, and more. We also have native speakers in 70+ languages for multilingual SFT projects. Specify your domain and language requirements in your job post to receive proposals from qualified AI Trainers.

Can AI Trainers verify and edit synthetic data?

Yes. Many teams use AI Trainers to verify, filter, and improve model-generated drafts rather than writing from scratch. Our network includes experienced reviewers who can judge correctness, fix errors, and ensure synthetic outputs meet your quality bar before they become training data.

How do AI Trainers access my annotation platform?

AI Trainers work inside your environment. You control access by inviting them to your annotation tool or internal platform. OpenTrain does not require access to your data or systems. Most teams use project-based permissions, and AI Trainers can sign NDAs or complete security reviews before onboarding.

How much does it cost to hire AI Trainers for SFT on OpenTrain?

You set your own rates and negotiate directly with AI Trainers. Rates vary by domain expertise, task complexity, and language requirements. General instruction data writers typically charge less than specialized domain SMEs. OpenTrain charges a platform fee on top of what you pay AI Trainers. Contact us for volume pricing on large projects.

What if I need a fully managed SFT program?

Our managed service handles everything: team assembly, onboarding, rubric development, calibration sets, QA passes, and delivery of verified training examples. We manage the AI Trainers so you can focus on your models. Ideal for large-scale projects, tight deadlines, or teams without internal annotation ops. Contact us for a managed service quote.

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