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OpenTrain vs Scale AI

Scale AI is a large data labeling platform with proprietary tooling. OpenTrain is a talent network that integrates with any labeling tool. Here's how they compare.
Feature Comparison

Side-by-Side Comparison

Feature OpenTrain Scale AI
Pricing Model Transparent: 15% marketplace fee or 20% managed fee. No per-task software charges. Custom enterprise pricing. Per-task fees bundled with platform access.
Tooling Tool-agnostic. Work happens in your tools (Label Studio, CVAT, Labelbox, custom). Proprietary platform. Data processed inside Scale's infrastructure.
Data Ownership Full ownership. Your data stays in your accounts. OpenTrain never hosts datasets. Data processed on Scale's servers. Contractual data controls vary.
Talent Access Direct access to 100,000+ pre-vetted specialists. You hire and manage them. Managed workforce. Limited visibility into individual contributors.
Minimum Commitment No minimums. No contracts. Pay as you go. Enterprise contracts with minimum commitments typical.
Specializations PhD-level domain experts across 70+ languages and 100+ domains. Broad coverage with emphasis on autonomous driving and GenAI.
Self-Service Option Yes. Post a job and manage independently. Primarily managed service model.
Setup Time Qualified candidates within days. No platform migration required. Onboarding and pipeline setup typically takes weeks.
Why OpenTrain

Key Differences

You Own the Relationship
With OpenTrain, you hire talent directly and they work in your environment. You control the workflow, set the rates, and own the team relationship. With traditional vendors, a managed layer sits between you and the people doing the work.
No Vendor Lock-In
OpenTrain integrates with whatever tools you already use. There's no proprietary platform to migrate into or out of. Switch tools, scale up, scale down — your talent stays the same.
Transparent, Predictable Costs
One flat percentage fee. No per-task charges, no software markups, no surprise invoices. You see exactly what talent costs and what OpenTrain charges.
When to Choose

Which Is Right for You?

Choose OpenTrain when:
  • You want to use your own annotation tools (Label Studio, CVAT, Labelbox, or custom)
  • You need transparent, predictable pricing without enterprise contracts
  • You want to hire and manage specialists directly
  • You need domain experts (medical, legal, multilingual) for LLM evaluation or RLHF
  • Data sovereignty is a priority and you need data to stay in your infrastructure
Try OpenTrain Free
Consider Scale AI when:
  • You need a fully managed, end-to-end data labeling solution with proprietary tooling
  • You are working primarily in autonomous driving or computer vision at massive scale
  • You prefer a single vendor for both tooling and workforce
  • Your organization requires enterprise-grade SLAs with dedicated account management
FAQ

Frequently Asked Questions

Yes. Since OpenTrain works with your existing tools, switching is straightforward. Post a job on OpenTrain, hire pre-vetted talent, and invite them into the annotation tools you already use. There's no data migration needed because OpenTrain doesn't host your data.

OpenTrain's pricing is transparent: a flat 15% marketplace fee on self-service projects or 20% on managed projects. There are no per-task software fees or platform charges. For many teams, especially those already using their own tools, this results in lower total cost. But pricing depends on your specific requirements — we recommend getting a quote to compare.

Yes. OpenTrain's network includes specialists in point cloud annotation, 3D bounding boxes, and sensor fusion labeling. They can work in tools like CVAT, Supervisely, or your custom pipeline. For large-scale AV projects, our managed service handles recruitment and quality assurance.

With OpenTrain, your data never leaves your infrastructure. Talent works directly in your tool accounts, using your access controls and security policies. OpenTrain provides the talent layer; you control the data layer.

Ready to Try OpenTrain?

Post a job for free. Receive a curated shortlist of pre-vetted specialists within days. No contracts, no commitments.
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.