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OpenTrainMaster's

Math Specialist for AI Training

Help improve AI systems’ mathematical reasoning by writing challenging questions and reviewing their answers.

Field
Math & statistics
Where
United States
Hours
up to 5/week
Asks for
Master's
Posted
3 days ago

Pay data for your profession: Math AI trainer jobs

How this pay compares

At $50/hr, this role pays more than 27% of the 54 open math & statistics roles with a listed pay range, below the median of $83.

Open math & statistics roles that ask for a Master's have a median of $70/hr (15 roles).

Among platforms with 10 or more priced math & statistics roles, Alignerr has the highest median ($185/hr across 23 roles) and OpenTrain AI the lowest ($49/hr across 26).

OpenTrain AI roles that closed since late October stayed listed a median of 31 days (122 roles). OpenTrain AI posted this one 3 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

$50/hr

Per week, before tax

$250

Per month, if the work is steady

$1,083

Tax
Contract pay arrives with no tax withheld. A US contractor at this rate and these hours would set aside about $274 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 math & statistics 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
Alignerr23$185/hrApplied Formal Methods Researcher (Lean 4)$170-200/hr
Mercor4$88/hr4 pricedMathematics Domain Expert$90-140/hr
OpenTrain AIthis role26$49/hrResearch Scientist: Formal Methods, Computational Science$135/hr
Handshake AI6up to $75/hrMath ExpertUp to $75/hr

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

All 60 open math & statistics roles →

The full listing

As posted on OpenTrain AI. See the original

The work

Help improve AI systems’ mathematical reasoning by writing challenging questions and reviewing their answers.

  • Create questions grounded in mathematical reasoning and formal logic.
  • Check AI-generated responses for accuracy, consistency, and rigor.
  • Assess whether proofs and technical solutions use sound reasoning.
  • Give clear feedback that identifies logical gaps and incorrect conclusions.

What it pays and takes

  • Pay: Up to $50 per hour.
  • Schedule: Flexible, asynchronous work with no minimum hour requirement. Contributors typically work about 5–20 hours per week when a project is active.
  • Location: Remote; open to candidates in the United States.
  • Language: Fluency in English.
  • Education: A master's degree, current master's enrollment, or graduate-level training in mathematics or a closely related field.
  • Skills: Strong mathematical reasoning and formal logic, experience writing proofs and assessing mathematical arguments, and careful judgment about correctness.

How it works

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

About AI training work

AI training uses human-written examples and expert reviews to help AI systems produce better answers. OpenTrain is a platform where people can find AI training and data-labeling work, build a profile, and apply; creating an account is free. This project draws on mathematical expertise to assess reasoning, proofs, and technical accuracy.

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 $50/hr since Nov 10, 2026 with no change.

Across OpenTrain AI's math & statistics roles, the median listed pay was $25/hr on Nov 1, 2026 (18 roles) and is $49/hr as of Nov 11, 2026 (26 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 math & statistics roles

All 60 math & statistics roles →