OpenTrain AI
Solutions / LLM & Agents

The #1 Network for Hiring AI Trainers

Browse our LLM & agent solutions below and post a job to hire from 124,000+ pre-vetted AI trainers — for RLHF, evaluation, red teaming, code review, and more.

LLM & Agent Solutions

Hire domain experts for every stage of LLM development — from training data creation to evaluation, red teaming, and agent testing.

LLM Evaluation

Golden datasets, pairwise ranking, rubric scoring, judge validation, and more

Accuracy Scoring
Rubric-Based Rating
Factuality Checks
Safety Evaluation

Red Teaming

Jailbreaks, prompt injection, policy bypass, data leakage, and more

Adversarial Prompts
Jailbreak Testing
Bias Probing
Safety Boundary Testing

Hallucination Audits

Claim verification, citation checking, severity scoring, and more

Factual Verification
Citation Checking
Grounding Audits
Consistency Review

RLHF & Preference Data

Pairwise ranking, multi-criteria scoring, rewrites, failure tagging, and more

Pairwise Comparisons
Likert Scoring
Reward Modeling
Preference Ranking

Supervised Fine-Tuning

Instruction data creation, domain verification, synthetic data QA, and more

Instruction Writing
Response Drafting
Multi-Turn Dialogues
Domain-Specific SFT

Code Generation Review

Verification, RLHF ranking, bug detection, security review, and more

Code Review
Bug Detection
Test Authoring
Refactoring QA

Function Calling

Tool selection, argument annotation, multi-step traces, error recovery, and more

Tool Use Evaluation
API Schema Authoring
Parameter Validation
Multi-Tool Chains

Computer Use Agent Training

Trajectory data and evaluation for browser and desktop agents

UI Navigation Tasks
Screenshot Annotation
Action Sequencing
Error Recovery Flows

Reasoning Step Verification

Step-level correctness labels for training process reward models

Chain-of-Thought Review
Logic Validation
Step Accuracy
Error Identification

Multilingual AI Training

Native-speaker RLHF, evaluation, prompt writing, and more across 100+ languages

Translation QA
Cross-Lingual Eval
Cultural Adaptation
Language-Specific SFT

Reasoning Problem Creation

Original problems with step-by-step solutions in math, code, and more

Problem Authoring
Multi-Step Puzzles
Domain Scenarios
Difficulty Calibration

Agent Simulations

Scenario design, gold trajectories, rollout evaluation, failure tagging, and more

Environment Design
Reward Shaping
Multi-Agent Scenarios
Trajectory Labeling

RL Environment Design

Reward functions, training scenarios, and environment QA for RL agents

State Space Design
Reward Functions
Environment Validation
Scenario Authoring
How It Works

How AI Training Works on OpenTrain

Step 01

Define Your AI Training Requirements

Describe the task type, domain expertise needed, evaluation framework, and quality bar. Whether it’s RLHF preference ranking, code review, red teaming, or multilingual evaluation — published pricing means no negotiation.

Step 02

We Screen & Match AI Trainers

Every candidate passes live domain assessments in their field — math PhDs for reasoning, senior devs for code review, linguists for multilingual tasks. You receive a curated shortlist with verified expertise.

Step 03

Review & Hire Your Team

Browse matched AI trainers with verified domain expertise, evaluation scores, and language capabilities. Pick exactly who fits your project requirements and quality standards.

Step 04

Deploy Into Your Training Pipeline

AI trainers work directly in your tools and frameworks — no platform migrations, no onboarding delays. They start contributing to your training pipeline on day one.

The #1 Network for AI Training

Post an AI training job and get matched with pre-screened domain experts, or let us recruit and manage a dedicated AI training team for you.

Self-Service

Post Your AI Training Job

Describe your requirements and receive a curated shortlist of domain experts matched to your project. 15% flat fee, no hidden markups.

Most popular
Managed Service

Full-Service, End-to-End

  • Recruiting & live vetting
  • Onboarding & training
  • Daily management & QA
  • Dedicated program lead
Integrations

Works With Every AI Training Platform

124,000+

Pre-Vetted Experts

180+

Countries

110+

Languages

FAQ

LLM & Agent Training Questions

Common questions about hiring AI trainers through OpenTrain.