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OpenTrainPhD

AI And Machine Learning Researcher

You will create expert training data and evaluate AI-generated content using research knowledge in computer science, machine learning, and artificial intelligence. The work focuses on accuracy, relevance, research methods, and clear written feedback.

Field
Machine learning
Where
United States
Commitment
part time
Hours
up to 20/week
Asks for
PhD
Posted
6 days ago

Pay data for your profession: Data scientist AI trainer jobs · PhD AI trainer jobs

How this pay compares

At $75/hr, this role pays more than 36% of the 72 open machine learning roles with a listed pay range, below the median of $90.

Open machine learning roles that ask for a PhD have a median of $90/hr (16 roles).

Among platforms with 10 or more priced machine learning roles, Mercor has the highest median ($108/hr across 10 roles) and Alignerr the lowest ($63/hr across 13).

OpenTrain AI roles that closed since late October stayed listed a median of 31 days (122 roles). OpenTrain AI posted this one 6 days ago.

Computed from 2,746 open roles we track across Mercor, micro1, Handshake AI, Alignerr, Appen and OpenTrain AI, refreshed daily. Midpoints of listed ranges; “up to” ceilings are left out of medians.

What you would earn at this rate

Rate

$75/hr

Per week, before tax

$1,500

Per month, if the work is steady

$6,500

Tax
Contract pay arrives with no tax withheld. A US contractor at this rate and these hours would set aside about $1,643 a month for self-employment tax plus federal income tax at the 12% bracket (25%, before state tax). Outside the US, your own country's rules apply.

Assumes paid hours only; unpaid assessments, onboarding and gaps between projects lower the real figure. Full take-home calculator · Track what you actually earn

Open machine learning roles on each platform

The same kind of work, priced on every platform we track, with the best-paid open role on each.

PlatformOpenMedianBest-paid open role
Mercor10$108/hrMachine Learning Engineer Talent Network$70-250/hr
micro112$90/hrApplied Scientist$245-280/hr
OpenTrain AIthis role41$90/hrBioinformatics Machine Learning Expert$175/hr
Alignerr13$63/hrSoftware Engineer - Machine Learning$90-120/hr
Handshake AI3up to $75/hr3 pricedData ScientistUp to $120/hr

“Up to” rows list only ceilings, so their median is a maximum, not comparable with the range midpoints above them.

All 79 open machine learning roles →

The full listing

As posted on OpenTrain AI. See the original

The work

You will create expert training data and evaluate AI-generated content using research knowledge in computer science, machine learning, and artificial intelligence. The work focuses on accuracy, relevance, research methods, and clear written feedback.

This is independent, asynchronous, project-based work that can fit alongside other commitments.

  • Create expert-level training data based on computer science, machine learning, and artificial intelligence research.
  • Review AI-generated content and responses for accuracy, relevance, and sound research methods.
  • Use academic judgment to write precise, useful feedback.
  • Work independently and asynchronously with AI research teams.

What it pays and takes

This is a remote, part-time contract opportunity for candidates in the United States. The work is asynchronous and requires strong written communication, careful review, and independent judgment.

  • Pay: Up to $75 per hour.
  • Time commitment: 20+ hours per week.
  • Location: Open to candidates in the United States.
  • Education: PhD in computer science, machine learning, artificial intelligence, or a related field from a top 100 US university.
  • Experience: Research experience in machine learning or artificial intelligence.
  • Subject areas: Computer vision, natural language processing, neural and evolutionary computing, robotics, systems and control, or multiagent systems.
  • Knowledge: Familiarity with arXiv, especially the Computing Research Repository, also known as arXiv cs.
  • Skills: Strong written communication, attention to detail, and the ability to work independently.

How it works

Apply on OpenTrain with your resume, then complete the application on the hiring site.

About AI training work

AI training is the human work behind systems that generate and understand text, images, code, and other content. People review examples, rate model responses, and provide feedback so AI systems can become more accurate and useful.

Experienced researchers are paid for applying specialized knowledge and careful judgment to difficult technical evaluation tasks. OpenTrain is a platform where people find AI training projects, build a profile, and apply.

From applying to your first payment on OpenTrain AI

  1. 1

    Create a profile

    Create a free OpenTrain profile with your domains, languages and hourly rate.

  2. 2

    Apply

    Apply to the listing. Some listings hire through OpenTrain; others send you to the hiring platform.

  3. 3

    Funded milestones

    The client funds each milestone before work starts.

  4. 4

    First payment

    OpenTrain pays out to your connected payout method when the client approves the milestone. It doesn't publish a fixed payout schedule.

Sources: OpenTrain: AI training careers, OpenTrain docs: invoicing and payouts

Full OpenTrain AI profile: watch-outs and the public record →

Pay history

OpenTrain AI has listed this role at $75/hr since Nov 6, 2026 with no change.

Across OpenTrain AI's machine learning roles, the median listed pay was $90/hr on Nov 1, 2026 (25 roles) and is $90/hr as of Nov 11, 2026 (37 roles).

What workers report about OpenTrain AI

Anonymous reports from people who applied or worked there: whether they got work, what they were paid and how fast.

Other machine learning roles

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