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OpenTrainPhDMaster's

Physics Expert AI Evaluator (English)

You will help improve AI systems by applying expertise in computational, physical, or theoretical physics. The work focuses on creating difficult problems, reviewing model responses, and explaining where their reasoning needs improvement.

Field
Physics
Where
Mexico
Commitment
part time
Hours
up to 20/week
Asks for
PhD, Master's
Posted
6 days ago

Pay data for your profession: Science AI trainer jobs · PhD AI trainer jobs · Physics AI trainer jobs

How this pay compares

The title points to rating and reviewing ai output: judging a model's answers or code against guidelines, such as which of two is better or whether one is correct and safe. What each kind of AI training work pays

At $63/hr, this role pays more than 33% of the 43 open physics roles with a listed pay range, below the median of $75.

Open physics roles that ask for a PhD have a median of $100/hr (21 roles).

Among platforms with 10 or more priced physics roles, OpenTrain AI has the highest median ($95/hr across 20 roles) and Alignerr the lowest ($45/hr across 11).

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

$63/hr

Per week, before tax

$1,260

Per month, if the work is steady

$5,460

Tax
Contract pay arrives with no tax withheld. A US contractor at this rate and these hours would set aside about $1,380 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 physics 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
micro16$150/hrPrincipal Research Scientist (Computer Science / Computational Physics)$100-400/hr
OpenTrain AIthis role20$95/hrPrincipal Research Scientist: CS / Computational Physics$100-400/hr
Mercor6$78/hrPhysics Domain Expert$90-140/hr
Alignerr11$45/hrPhysicist, PhD$90-120/hr
Handshake AI6up to $63/hrPhysics ExpertUp to $125/hr

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

All 49 open physics roles →

The full listing

As posted on OpenTrain AI. See the original

The work

You will help improve AI systems by applying expertise in computational, physical, or theoretical physics. The work focuses on creating difficult problems, reviewing model responses, and explaining where their reasoning needs improvement.

  • Create expert-level physics problems based on real simulation, modeling, and computational workflows.
  • Review AI-generated responses for technical accuracy, numerical rigor, and practical physics reasoning.
  • Find weaknesses in model reasoning and provide clear, structured written feedback.
  • Use independent judgment to complete project tasks remotely.

What it pays and takes

This is an ongoing, project-based contract role with flexible part-time work.

  • Pay: Up to $63 per hour.
  • Time: 20 or more hours per week.
  • Schedule: No set schedule; complete work remotely and at your own pace.
  • Location: Open to candidates in Mexico.
  • Language: Fluent written and spoken English.
  • Education: Master's or PhD in physics or a related field, or an MS with relevant industry experience.
  • Skills: Strong written communication, close attention to technical detail, and the ability to explain complex physics concepts clearly.
  • Experience: Helpful background includes large-scale simulations on HPC clusters across multiple scientific computing environments.
  • Additional knowledge: Familiarity with lattice methods or other specialized techniques in a physics subfield.

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 modern AI systems, including writing problems, reviewing model answers, and giving feedback that helps models produce more useful and accurate results. OpenTrain helps people find this kind of work, build a profile, and grow a portfolio around their skills.

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 $63/hr since Nov 6, 2026 with no change.

Across OpenTrain AI's physics roles, the median listed pay was $75/hr on Nov 1, 2026 (11 roles) and is $95/hr as of Nov 11, 2026 (20 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 physics roles

All 49 physics roles →