OpenTrain AI

OpenTrain AI is a global marketplace connecting vetted human AI data experts with managed labeling services. It simplifies sourcing quality training data by offering direct hiring, flexible workflows, and secure payments worldwide.

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AI Jobs AI Recruiting Large Language Models (LLMs)

About OpenTrain AI

OpenTrain AI is an international freelance marketplace that connects users with vetted human data experts and integrates with any annotation tool. It enables organizations to hire specialized AI trainers directly, reducing costs and maintaining control over data workflows. The platform supports secure global payments, offers flexible project management, and provides a fully-managed service where in-house experts handle end-to-end AI data labeling projects. Whether sourcing freelance professionals or outsourcing entire projects, OpenTrain AI streamlines the process of building high-quality training datasets.

How to Use

Create an account on OpenTrain AI, then post your data annotation project, with options for anonymous posting. Receive proposals from vetted freelance AI trainers and outsourcing providers. Review and select suitable experts, assign tasks, and invite them to your preferred data labeling software. Fund projects via escrow with credit card or bank transfer, releasing payments upon approval. Alternatively, request a quote for the fully-managed service, where OpenTrain AI's team manages the entire data labeling process.

Features

Hire and manage vetted freelance human data experts directly

Secure global payments with escrow and milestone funding

Seamless integration with your preferred data labeling tools

One platform for sourcing freelancers and outsourcing providers

Access to domain-specific AI trainers for diverse annotation needs

Option for fully-managed AI data labeling services

Global marketplace with over 40,000 vetted AI professionals across 110+ countries

Use Cases

Creating high-quality datasets for AI training

Video and image annotation tasks

3D point cloud data labeling

Time series data annotation

Medical and healthcare data labeling

Reinforcement learning from human feedback (RLHF)

Reasoning, planning, and complex data annotation

Preparing data for fine-tuning AI models

Generating training data for large language models and generative AI

Geospatial and mapping data labeling

Coding and STEM data annotation

Robotics sensor data labeling

Image and visual data annotation

Best For

AI and machine learning teamsOrganizations seeking cost-effective data labelingData scientists and AI researchersProject managers overseeing AI data projectsAI startups and enterprises needing quality training dataCompanies developing AI modelsResearch institutions and developers

Pros

Significant cost savings, up to 60% or more compared to other providers

Access to a global pool of over 40,000 vetted AI trainers across 110+ countries

Flexible options for self-managed freelance hiring or fully-managed projects

Directly hire qualified experts at scale

Source domain-specific and native language annotators

Secure, flexible payments with escrow and milestone funding

Transparent pricing for managed services

Work with any data labeling software, maintaining workflow control

Frequently Asked Questions

Find answers to common questions about OpenTrain AI

Is my data secure and confidential?

Data security and confidentiality are prioritized; details are provided upon project setup.

What is the pricing structure?

Posting a project is free. Costs vary based on project scope, with transparent pricing for managed services and pay-per-task or hourly options.

Can I post projects anonymously?

Yes, you can choose to post anonymously and keep your contact or company details hidden.

How are payments handled?

Payments are processed via escrow with Stripe, held until project approval. Funding can be by milestone, task, hour, or fixed price.

What types of data can I label?

The platform supports a wide range of data types, including images, video, text, 3D point clouds, and geospatial data.

Is there support for specialized AI tasks?

Yes, the platform offers access to domain-specific trainers for tasks like medical annotation, NLP, robotics, and more.

Can I manage projects remotely?

Absolutely. You can oversee and manage your projects entirely online, with flexible collaboration options.

What are the benefits of using OpenTrain AI?

It offers cost savings, access to a global talent pool, flexible management options, and seamless integration with existing workflows.