Meridial Review
Legit: Meridial is the expert marketplace Invisible Technologies runs, and it pays every two weeks to the account in your profile.
- Remote
- Profile, then apply to projects
- Paid every two weeks
Yes, Meridial is legit. It is the contractor marketplace Invisible Technologies runs for experts at marketplace.inv.tech, and it pays contractors for AI training work.
Below is how Meridial works, who it takes, how it pays, and what contributors on Reddit report. Everything comes from Invisible's and Meridial's own pages, read on 2026-10-12, plus a pass through recent Reddit threads.
Is Meridial Legit?
Invisible Technologies was founded in 2015 by Francis Pedraza. Matt Fitzpatrick, a former McKinsey senior partner, became CEO in early 2025, and the company lists a team of more than 250.
It lists offices in New York, San Francisco, Reston, Austin, London and Warsaw. It says it has trained over 80% of the world's leading AI models.
Meridial describes itself as an expert contractor marketplace powered by Invisible. Contributors are independent contractors, employed by neither Meridial nor Invisible.
Sources: Invisible about page, Invisible careers page, Meridial FAQ.
How Meridial Works
Meridial lists three steps from sign-up to first project.
- Create a profile, add your skills and complete a short confirmation step.
- Browse open projects and apply to the ones that fit.
- Sign a Statement of Work for the project, then work when it suits you.
The Statement of Work shows what the project involves, what it pays and how long it should last before you commit.
After you join, Meridial checks your expertise against current projects and contacts you if there is a match. If there is not, your profile stays on file. Meridial says plainly that joining does not guarantee work.
Its FAQ lists more than 700 engagements across 12 domains.
Sources: Meridial home, Meridial FAQ, Become an expert.
What the Work Involves
Meridial says its projects come straight from the labs building frontier AI. Its FAQ lists this work.
- Writing prompts and answering them.
- Evaluating and ranking AI responses.
- Improving step-by-step reasoning.
- Red-teaming.
- Building practice environments for AI agents, including checking their steps and setting reward signals.
Fields covered include languages, sciences, business, engineering, coding, medicine, finance and maths, creative writing, law and history.
Sources: Meridial FAQ, Meridial about page.
Who Gets In
Meridial lists what it looks for.
- Recognized expertise in your field.
- Clear written English, checked when you sign up.
- A laptop or desktop with a modern browser, 8GB of RAM and a stable connection of at least 10 Mbps.
A camera is needed for the identity check only, not during projects. Meridial also runs a page for college students and recent graduates.
Who gets matched depends on the client, the expertise needed and where you live. Meridial does not publish a country list.
Sources: Become an expert, Students page.
How Meridial Pays Contributors
Meridial pays every two weeks to the account in your profile. Each project sets its own rate, and Meridial says it publishes the rate range on every engagement.
It also says all time spent on a project is paid and that it takes no platform cut. You handle your own tax.
The only rate Meridial lists on its public pages today is on the students page:
| Project | Listed at | Where it is listed |
|---|---|---|
| Search results evaluation (college students and recent graduates) | $15 to $20 per hour | Meridial students page |
That is the rate shown on the listing, not a promise of income. Pay on other projects depends on the field and the work.
Sources: Meridial FAQ, Become an expert, Students page, 2026-10-12.
What Contributors Say on Reddit
Recent threads in r/Meridial and r/AiTraining_Annotation tell a mixed story.
- Several contributors say they were paid on the scheduled date.
- Others say their account was put under review just before payday and their pay was held until the review ended, often with no reason given.
- The address check during onboarding is a common sticking point. Several people report waiting weeks or failing it with no way to upload a new document.
- Some found project onboarding confusing, and time on at least one project was tracked with a Hubstaff timer.
- Project length varies. Some report one or two day projects; others say their work has been steady.
Trainers on Reddit give one piece of advice again and again: keep screenshots of your finished work and a record of every payout.
Reddit threads, read 2026-10-12: r/Meridial thread, r/Meridial thread, r/Meridial thread, r/Meridial thread, r/AiTraining_Annotation thread.
Meridial Compared With Ethos and Mercor
| Meridial (Invisible) | Ethos | Mercor | |
|---|---|---|---|
| How you join | Profile, a short confirmation step, then apply to projects | A recorded AI voice interview | A role-specific AI interview of about 20 minutes |
| Retakes | Not stated | Not stated | Up to three interview retakes, plus a free practice interview |
| How you are paid | Every two weeks to your profile account | Through Revolut or Wise | Every Wednesday for the previous week, through Stripe or Wise |
| DigiNo referral | Yes | Yes | Yes |
Mercor contracts are in US dollars, and the payout provider depends on your country. Ethos verifies identity through Persona and checks your country of residence against the countries its payment providers support.
If you want more than one place to apply, the AI Training Job Matcher asks two questions and points you to the platform that fits.
Want to compare it with the rest? Our list of AI training and data annotation companies covers every company we checked, with the work, who it hires and how to get in.
Sources: Mercor payments docs, Mercor AI interview docs, Ethos privacy policy.
Should You Apply to Meridial?
If you have real expertise and can wait for a match, joining Meridial costs nothing and the projects come from AI labs. Expect gaps: Meridial itself says work depends on project availability in your field.
Apply to a second platform in the same week so one quiet month does not stop your income. New to the work? Start with what an AI trainer does on our AI trainer guide, or read how we checked whether Outlier is legit.
Find the AI training platform that fits you
Chat with DigiNo Toucan. Two questions, no CV needed.
DigiNo earns a referral fee if you join Meridial, Ethos or Mercor through our links. We have no other deal with Invisible Technologies, and nobody paid for this review.
Meridial FAQ
Is Meridial legit?
Yes. Meridial is a marketplace run by Invisible Technologies, founded in 2015, that pays independent contractors for AI training projects. Contributors on Reddit confirm payments, though some report accounts held under review around payday.
How do I work for Meridial as an AI trainer?
Join the Meridial network, complete your profile and a short confirmation step, then apply to open projects. If you are matched, you sign a Statement of Work that shows the pay and expected length before you start.
How does Meridial pay contributors?
Meridial pays every two weeks to the account in your profile. Each project has its own rate, which Meridial says it shows before you commit.
What are the alternatives to Meridial?
Ethos and Mercor both take experts for AI training projects. The AI Training Job Matcher on DigiNo points you to the right one in two questions.
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