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LLM & Agent Solutions / LLM Evaluation

The Talent Layer for LLM Evaluation

Post a job and find domain experts from our network of 100,000+ across medicine, law, finance, code, science, and more. Native speakers in dozens of languages for multilingual evaluation. Hire into any evaluation tooling.
OpenTrain dashboard for an LLM evaluation project showing hired AI trainers specializing in physics, finance, and biotech evaluation.
Where leading AI teams find expert raters for LLM evaluation.
Subject Matter Experts
Raters across medicine, law, finance, engineering, code, and more
Any Tooling
Work in your evaluation platform, internal tools, or custom workflows
Global Languages
Native speakers for multilingual and localized model evaluation
All-In-One

One Place to Hire and Manage Your LLM Evaluation Team

Everything you need to build a team that rates model outputs accurately and consistently, at any scale, in any evaluation tooling.

The #1 Network for LLM Evaluation Talent

Domain experts across medicine, law, finance, code, and more. Native speakers in dozens of languages. Find qualified raters for any evaluation project.
Post an LLM Evaluation Job
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Three LLM evaluation experts available for hire on OpenTrain with specializations in chemistry, engineering, and financial analysis.

Work Happens in Your Stack

AI Trainers work inside your evaluation platform or internal tooling. You control access and permissions. Your data stays where it is.
Post an LLM Evaluation Job
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OpenTrain workspace showing shortlisted LLM evaluation experts with credentials in accounting, engineering, and biology ready to invite to your tools.

Communicate and Manage Work

Built-in chat, instruction sharing, and everything you need to manage your team in one place. No separate apps required.
Post an LLM Evaluation Job
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OpenTrain project hub for LLM evaluation with live instruction editor and team chat channel for managing evaluators.

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 LLM Evaluation Job
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OpenTrain payment interface showing escrow funding and Stripe payout for LLM evaluation tasks.
OpenTrain job posting flow for LLM evaluation showing tool selection and option to invite AI trainers to your workspace.
Why OpenTrain

Scale LLM Evaluation With Domain Experts and Native Speakers

Post a job and get a shortlist of qualified AI Trainers ready to start working in your evaluation pipeline. Hire for:
Golden dataset creation with verified reference outputs
Pairwise preference ranking and A/B comparisons
Rubric-based scoring for helpfulness, accuracy, safety, and more
LLM-as-judge validation and calibration
Multilingual evaluation across dozens of languages
How It Works

How OpenTrain Works for LLM Evaluation

Create your account, post a job, and let our experts run inside your tools so you hit quality targets fast.
01
Post a Job and Receive Pre-Screened Applicants
Describe your evaluation criteria, required domains, and quality expectations. Receive proposals from AI Trainers with relevant expertise.
02
Hire and Add to Your Eval Tooling
Review candidates, make your hires, and invite them to your evaluation platform or internal workflows.
03
Communicate and Pay in One Place
Share guidelines, message your team, and handle global payments from a single dashboard.

Post Your LLM Evaluation Job Now

Create an account and post your first job in minutes.
Post an LLM Evaluation Job

Large Project? We Can Help.

Get a dedicated team managed end-to-end for large evaluation projects.
Get a Managed Service Quote
Get Started

Start Building Your LLM Evaluation Team Today

Post your first job and connect with domain experts who can deliver reliable, high-quality assessments of your model's outputs.
OpenTrain workspace for LLM evaluation showing hired domain experts in pharmacy and patent law, with project stats and management options.
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Metrics

Where Top AI Teams Scale LLM Evaluation

The largest network of AI training specialists, ready to work in any evaluation workflow.
100K+
pre-vetted AI training specialists
50+
professional domains covered
24 hrs
avg. time from job post to production start
FAQ

FAQs About Hiring for LLM Evaluation

Short answers to common questions about LLM evaluation on OpenTrain.

You can hire for golden dataset creation, pairwise preference ranking, rubric-based scoring, output quality review, LLM-as-judge validation, and more. Whether you need human baselines for benchmarks, preference data for model comparison, or ongoing quality monitoring, you can find experienced evaluators in our network.

Our network includes domain experts across medicine, law, finance, software engineering, science, creative writing, and more. For multilingual evaluation, we have native speakers in dozens of languages who can assess fluency, cultural accuracy, and localized quality.

AI Trainers work directly in your stack. This includes evaluation platforms, internal tooling, or any custom workflow you use. OpenTrain is tool-agnostic, so you invite hires to your own environment and maintain full control over access and data.

Quality control is managed by you and your team. Many clients establish calibration sets, run inter-rater reliability checks, and provide detailed rubrics before production work begins. OpenTrain gives you the tools to share guidelines, communicate feedback, and manage your team from one place.

Pricing is set between you and the AI Trainers you hire. Rates vary based on domain expertise, task complexity, and turnaround requirements. You can review proposals, compare rates, and negotiate directly. Payments are handled through OpenTrain with funds released upon your approval.

Direct hire gives you full control. You post a job, review proposals, hire AI Trainers, and manage the work yourself using OpenTrain's built-in tools. Managed service is for larger or ongoing projects where you want OpenTrain to handle recruiting, quality management, and delivery end-to-end.

Get Started

Join the #1 Platform for AI Training Talent

Where top AI builders and expert AI Trainers connect to build the future of AI.
Self-Service
Post a Job
Post your project and get a shortlist of qualified AI Trainers and Data Labelers. Hire and manage your team in the tools you already use.
Managed Service
For Large Projects
Done-for-You
We recruit, onboard, and manage a dedicated team inside your tools. End-to-end operations for large or complex projects.
For Freelancers
Join as an AI Trainer
Find AI training and data labeling projects across platforms, all in one place. One profile, one application process, more opportunities.