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OpenTrainPhDMaster's

Physics Expert for AI Evaluation

You will help improve AI systems by applying practical knowledge of computational, physical, or theoretical physics. Your work will focus on creating expert-level problems, reviewing model responses, and explaining what would make those responses more accurate and useful to…

Field
Physics
Where
United States
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 $125/hr, this role pays more than 76% of the 43 open physics roles with a listed pay range, above 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

$125/hr

Per week, before tax

$2,500

Per month, if the work is steady

$10,833

Tax
Contract pay arrives with no tax withheld. A US contractor at this rate and these hours would set aside about $2,739 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 practical knowledge of computational, physical, or theoretical physics. Your work will focus on creating expert-level problems, reviewing model responses, and explaining what would make those responses more accurate and useful to physicists.

  • Create physics problems and scenarios based on simulation, modeling, and computational workflows.
  • Evaluate AI-generated responses for technical accuracy, numerical rigor, and fit with real physics workflows.
  • Write structured feedback that helps improve AI model performance.
  • Explain complex physics concepts clearly and pay close attention to detail.
  • Complete project tasks independently in a remote, asynchronous setting.

What it pays and takes

This is ongoing, project-based contract work that can be done alongside another role. The opportunity is intended for people with advanced physics training or closely related experience.

  • Pay: Up to $125 per hour for eligible work.
  • Schedule: Part time, with a 20+ hour per week time requirement and no set schedule stated.
  • Location: Remote and open to candidates in the United States.
  • Education: A master's or PhD in physics or a related field.
  • Alternative qualification: A master's degree combined with relevant industry experience may also qualify.
  • Communication: Strong written communication and the ability to explain complex physics concepts clearly.
  • Work style: Ability to work independently in a remote, asynchronous environment.
  • Helpful background: Large-scale simulations on high-performance computing clusters, multiple scientific computing environments, lattice methods, or other specialized physics techniques.

How it works

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

About AI training work

AI training work uses human-written examples, reviews, and feedback to improve how artificial intelligence systems respond. Physics experts are valuable because they can judge technical reasoning, numerical accuracy, and whether an answer reflects real scientific practice. OpenTrain helps people find these projects, build a profile, and apply in minutes.

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 $125/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 →