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Meridial for AI trainers

The expert network built for frontier AI training

meridial.ai
Open jobs
489
Median pay
$37/hr
Typical pay
$5–65/hr
32 reviews
1.5

About Meridial

Meridial is the expert marketplace of Invisible Technologies, an AI company that started in 2015. It hires lawyers, doctors, engineers, coders, linguists, and other experts as independent contractors. They write and rank AI answers, red-team models, and build training environments for AI labs and companies. Invisible says it has trained over 80% of the leading AI models. Most Meridial roles are posted as "Freelance AI Trainer Project" jobs, and the same role is often posted once per country.

Founded
2015 (Invisible Technologies)
Founder
Francis Pedraza (CEO: Matt Fitzpatrick)
Headquarters
San Francisco, USA
Funding
$100M at a valuation over $2B (2025)
Workers
Independent contractors
Payment
Payment provider, every two weeks

How hiring works

  1. Create a profile on meridial.ai, list your skills, and confirm your identity with your camera. You need clear written English and a computer with 8GB of RAM.
  2. Apply to open projects and take the skills tests. Reviewers say some tests watch your camera, microphone, and screen.
  3. Meridial compares your profile with its projects and contacts you when one fits. Joining does not guarantee work.
  4. Sign a Statement of Work that shows the rate and the expected length. Some projects also need a background check.

What workers say

Good

  • You see the rate and the expected length of a project before you sign.
  • Meridial says all time on a project is paid, every two weeks.
  • Many open roles in law, coding, science, finance, and over 100 languages.

Watch out for

  • 91% of Trustpilot reviews are 1 star. Many say they did unpaid tests and then got no work.
  • Some applicants were stuck at address verification, and support replies can take weeks.
  • During some tasks, Meridial can record your screen and use your camera to check that you are present.

Open jobs at Meridial

Open jobs

489 jobs

  • Civil Engineering Specialist

    Structural Analysis+7

    $6–65/hr

    🇺🇸 US

  • Art History Specialist

    Visual AnalysisIconography+6

    $6–65/hr

    🇺🇸 US

  • Anthropology Specialist

    Cultural Anthropology+7

    $6–65/hr

    🇺🇸 US

  • Actuarial Science Specialist

    Probability Theory+7

    $6–65/hr

    🇺🇸 US

  • Neuroscience Specialist

    NeuroanatomyNeurophysiology+6

    $6–65/hr

    🇺🇸 US

  • Medic/Doctor

    Internal Medicine+7

    $6–65/hr

    🌍 Australia and US

  • Bash Coding Specialist

    BashAlgorithms+6

    $8–65/hr

    🌍 India and US

  • HTML Coding Specialist

    HTMLJavaScriptTypeScript+5

    $6–65/hr

    🌍 India and US

  • SQL Coding Specialist

    SQLAlgorithms+6

    $8–65/hr

    🌍 India and US

  • C# Coding Specialist

    C#Algorithms+6

    $8–65/hr

    🌍 India and US

  • Java Coding Specialist

    JavaAlgorithms+6

    $8–65/hr

    🌍 India and US

  • JavaScript Coding Specialist

    JavaScriptAlgorithms+6

    $8–65/hr

    🌍 India and US

  • Python Coding Specialist

    PythonAlgorithms+6

    $8–65/hr

    🌍 Worldwide

  • Synthetic Chemistry Specialist

    Organic Synthesis+7

    $8–65/hr

    🇵🇭 Philippines

  • Structural Engineering Specialist

    Structural Analysis+7

    $8–65/hr

    🇵🇭 Philippines

  • Radiological Health

    Radiation Protection+7

    $8–65/hr

    🇵🇭 Philippines

  • Radiochemistry/Nuclear Chemistry Specialist

    Radioisotope Production+7

    $8–65/hr

    🇵🇭 Philippines

  • Organic/Inorganic Chemistry Specialist

    Reaction Mechanisms+7

    $8–65/hr

    🇵🇭 Philippines

  • Nuclear Physics Specialist

    Nuclear Structure+7

    $8–65/hr

    🇵🇭 Philippines

  • Nuclear Engineering Specialist

    Reactor Physics+7

    $8–65/hr

    🇵🇭 Philippines

  • Mechanical Engineering Specialist

    Thermodynamics+7

    $8–65/hr

    🇵🇭 Philippines

  • Materials Science/Engineering Specialist

    Crystallography+7

    $8–65/hr

    🇵🇭 Philippines

  • Environmental Science Specialist

    Climate Science+7

    $8–65/hr

    🇵🇭 Philippines

  • Electrical Engineering Specialist

    Circuit Design+7

    $8–65/hr

    🇵🇭 Philippines

  • Analytical Chemistry Specialist

    Analytical Chemistry+7

    $8–65/hr

    🌍 Worldwide

  • Drug Discovery Specialist

    Medicinal Chemistry+7

    $8–65/hr

    🇵🇭 Philippines

  • Sound Engineering Specialist

    Live Sound Reinforcement+7

    $8–65/hr

    🌍 North America and UK

  • Video Production Specialist

    CinematographyLighting+6

    $8–65/hr

    🌍 Canada, UK and US

  • Coding Specialist

    Software Engineering+7

    $8–65/hr

    🇺🇸 US

  • Malayalam Language Specialist

    Malayalam GrammarSyntax+6

    $8–65/hr

    🌍 Worldwide

  • Odia Language Specialist

    Odia GrammarSyntax+6

    $8–65/hr

    🇮🇳 India

  • Electrical Engineering Specialist

    Circuit Design+7

    $6–65/hr

    🇺🇸 US

  • Danish Language Specialist

    Danish GrammarSyntax+6

    $8–65/hr

    🌍 Europe and US

  • Web Development Specialist

    ReactNext.jsUI/UX Design+5

    $8–65/hr

    🇺🇸 US

  • Chemical Engineering Specialist

    Thermodynamics+7

    $8–65/hr

    🇺🇸 US

  • Environmental Physics Specialist

    Atmospheric Dynamics+7

    $8–65/hr

    🇺🇸 US

  • Explosive Engineering Specialist

    Energetic Materials+7

    $8–65/hr

    🇺🇸 US

  • Audio Editing Specialist

    Sound Design+7

    $8–65/hr

    🌍 Europe and North America

  • Visual & Digital Arts Specialist

    IllustrationGraphic Design+6

    $8–65/hr

    🇺🇸 US

  • Punjabi (Gurumukhi) Language Specialist

    Punjabi Grammar+7

    $8–65/hr

    🇮🇳 India

  • Kannada Language Specialist

    Kannada GrammarSyntax+5

    $6–65/hr

    🇮🇳 India

  • Gujarati Language Specialist

    Gujarati GrammarSyntax+5

    $6–65/hr

    🇮🇳 India

  • Video Editing Specialist

    Video Editing+7

    $8–65/hr

    🇺🇸 US

  • Turkish Language Specialist

    Turkish Linguistics+7

    $6–65/hr

    🇹🇷 Türkiye

  • Thai Language Specialist

    Thai LinguisticsPhonetics+6

    $6–65/hr

    🇹🇭 Thailand

  • Bengali Language Specialist

    BengaliGrammarSyntax+5

    $6–65/hr

    🌍 South Asia

  • Marathi Language Specialist

    Marathi GrammarSyntax+5

    $6–65/hr

    🇮🇳 India

  • Tamil Language Specialist

    Tamil LinguisticsPhonetics+6

    $6–65/hr

    🇮🇳 India

  • Telugu Language Specialist

    TeluguPhoneticsSyntax+5

    $6–65/hr

    🇮🇳 India

  • Vietnamese Language Specialist

    VietnamesePhonology+6

    $6–65/hr

    🇻🇳 Vietnam

Open jobs by category

  1. Languages221 open jobs
  2. STEM85 open jobs
  3. Coding57 open jobs
  4. Voice & Video52 open jobs
  5. Generalist31 open jobs
  6. Medical19 open jobs
  7. Finance11 open jobs
  8. Creative10 open jobs
  9. Legal3 open jobs

Hourly pay of open jobs

  1. Under $2527 open jobs
  2. $25–50445 open jobs
  3. $50–7513 open jobs
  4. $75–1001 open jobs
  5. $100–1502 open jobs
  6. $150–2000 open jobs
  7. $200 or more1 open jobs

Frequently Asked Questions about Meridial

How much does Meridial pay?

Meridial has 489 open jobs on this site. The median pay is $37/hr, and most jobs pay $5–65/hr. Each job page shows its own rate.

How does Meridial pay workers?

Meridial pays every two weeks to the payment account in your profile, through a third-party payment provider. Each project has a Statement of Work with the rate, set before you start, and Meridial says all time on a project is paid. Many job posts give a range such as $8 to $65 an hour, and the exact rate depends on your experience, skills, and country. To pay you, Meridial can ask for a government ID and a tax ID. You pay your own taxes.

How do I get hired at Meridial?

1. Create a profile on meridial.ai, list your skills, and confirm your identity with your camera. You need clear written English and a computer with 8GB of RAM. 2. Apply to open projects and take the skills tests. Reviewers say some tests watch your camera, microphone, and screen. 3. Meridial compares your profile with its projects and contacts you when one fits. Joining does not guarantee work. 4. Sign a Statement of Work that shows the rate and the expected length. Some projects also need a background check.

Is Meridial legit?

Meridial is a real company. It belongs to Invisible Technologies, a San Francisco company founded in 2015 that raised $100M at a valuation over $2B in 2025. Invisible's customers include Microsoft and AWS. Meridial says it pays every two weeks. But it has 1.5 of 5 on Trustpilot from 32 reviews, and many reviewers say they did unpaid tests and then got no work.

How are Meridial and Invisible Technologies related?

Meridial is the expert marketplace of Invisible Technologies. Invisible sells AI training data and AI software to companies, and Meridial finds the experts who do the work. You work as an independent contractor, not as an employee of Meridial or Invisible. Meridial job posts are on Greenhouse under the name "agency", and some emails come from the invisible.email domain.

What is an AI trainer job?

AI trainers help companies improve AI models. You review and rate model answers, write example answers, find mistakes, or record voice and video data. Experts in law, medicine, coding, languages, and other fields teach models how a professional thinks. Most of this work is remote, flexible, and paid by the hour.

Are AI trainer jobs remote?

Yes. Every job on this site is remote, and most have flexible hours. Some jobs accept people from certain countries only, so check the 🌍 location on each job before you apply.

What skills or degrees do I need?

It depends on the job. Generalist jobs need clear writing and attention to detail. Expert jobs usually ask for a degree or work experience in the field, such as a law license or medical training. Language jobs need native or fluent skill in that language. Coding jobs need real programming experience.