Compare tools
Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
⇄ Comparison dimension — pick the market you're actually shopping in
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Labelbox
✓ verifiedFreemium
Data-labeling and RL data platform supplying training data, environments and evaluation for frontier AI labs and enterprises.
1.1M visits/mo
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Outlier AI
✓ verifiedFree
Outlier is a platform where experts earn freelance income training and evaluating AI by writing prompts, rubrics and rating answers.
12M visits/mo
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Wirestock
✓ verifiedPaid
Marketplace pairing AI labs with ethically sourced, creator-made image and video datasets, alongside freelance content gigs.
290K visits/mo
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OpenTrain AI
✓ verifiedFreemium
Talent marketplace linking AI labs with 257,000+ vetted data labelers and trainers for RLHF, red-teaming and evaluation.
574K visits/mo
Pricing
No public pricing
No public pricing
No public pricing
Self-Service: 10% marketplace fee + $9.95 contract initiation fee
Managed Service: 20% management fee
Core features
- ✦Data labeling across modalities
- ✦RL environments and reward signals
- ✦Custom model evaluations and benchmarks
- ✦Human preference/annotation from an expert network
- ✦Recursion RL platform for enterprise agents
- ✦Robotics data (video, trajectories)
- ✦Remote AI-training gig work
- ✦Tasks: prompt writing, rubrics, rating answers
- ✦Flexible hours, work from anywhere
- ✦Weekly, quality-based pay
- ✦Roles across coding, STEM and languages
- ✦Free access to paid AI models
- ✦Large multimodal library spanning images, video, illustration, and vector art
- ✦Ethically sourced content cleared for AI training use
- ✦QA-reviewed datasets at scale
- ✦Custom dataset builds for specific structural needs
- ✦Freelance project matching based on creator skills
- ✦Creator earnings and progress dashboard
- ✦Network of 257,000+ pre-vetted AI data experts
- ✦AI-matched shortlists with skills tests and interviews
- ✦Bring talent into any annotation platform, no lock-in
- ✦Self-service or fully managed engagements
- ✦Job feed aggregating 20+ platforms for freelancers
Use cases
- →Building training and evaluation datasets
- →Post-training and RLHF for models
- →Benchmarking model capability
- →Training enterprise specialist agents
- →Earning side income as an AI trainer
- →Contributing expertise to improve AI
- →Flexible remote work for grads and experts
- →Gaining hands-on AI and prompt experience
- →Sourcing licensed visual data to train AI models
- →Requesting custom, structured multimodal datasets
- →Freelancers picking up paid photography, illustration, or design gigs
- →Tracking freelance income and project matches
- →Sourcing experts for RLHF and model evaluation
- →Staffing red-teaming and data-labeling projects
- →Scaling annotation teams into existing tools
- →Finding AI training gigs as a freelancer
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