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OpenTrain

AI Evaluation Specialist in Japan

You will review responses from conversational AI tools and judge how well they match a user's preferences. You will make careful comparisons and explain your decisions in clear Japanese.

Field
Generalist
Where
Japan
Commitment
part time
Hours
up to 20/week
Posted
3 days ago

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 $30/hr, this role pays more than 15% of the 206 open generalist roles with a listed pay range, below the median of $60.

Among platforms with 10 or more priced generalist roles, Alignerr has the highest median ($80/hr across 17 roles) and micro1 the lowest ($50/hr across 54).

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

$30/hr

Per week, before tax

$600

Per month, if the work is steady

$2,600

Tax
Contract pay arrives with no tax withheld. A US contractor at this rate and these hours would set aside about $657 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 generalist 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
Alignerr17$80/hrFrontier Data Lead – Client Success & AI Partnerships$85-120/hr
Mercor22$63/hrLuxury Automotive Strategy Expert$300-350/hr
OpenTrain AIthis role115$61/hrContract Manager and Negotiator (English)$150/hr
micro160$50/hrMember of Technical Staff, Enterprise AI$300k-700k/yr
Handshake AI24up to $88/hrIntelligence Expert (Bachelor's, Master's and PhDs) - AI TrainerUp to $200/hr

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

All 238 open generalist roles →

The full listing

As posted on OpenTrain AI. See the original

The work

You will review responses from conversational AI tools and judge how well they match a user's preferences. You will make careful comparisons and explain your decisions in clear Japanese.

This is independent, asynchronous work that you can complete remotely alongside other work.

  • Compare and rank alternative AI-generated responses, including responses with subtle differences.
  • Explain which response better fits a user's preferences and why.
  • Review tone, warmth, writing style, emoji use, and personalization.
  • Complete AI evaluation tasks using your experience with ChatGPT or a similar AI assistant.
  • Provide thoughtful written feedback in Japanese.

What it pays and takes

The role is designed for an individual contributor who can make nuanced judgments about conversational AI and explain those judgments clearly.

  • Pay: Up to $30 per hour.
  • Time: 20+ hours per week.
  • Location: Open to candidates in Japan; the work is remote and asynchronous.
  • Language: Fluent written and spoken Japanese, plus working English for platform instructions, training materials, and task guidance, ideally at B2 level.
  • Experience: Hands-on experience using ChatGPT or a similar AI chat assistant.
  • Requirement: Ability to form, explain, and defend nuanced preferences between AI responses.
  • Requirement: Comfort sharing eligible ChatGPT conversation history for research and product improvement, with at least 41 conversations remaining after personal content is removed.
  • Work style: Ability to work independently in a remote setting.

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 learn to produce useful responses. Contributors compare and rate outputs, explain what works, and help improve how AI handles tone, meaning, and user preferences.

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 $30/hr since Nov 10, 2026 with no change.

Across OpenTrain AI's generalist roles, the median listed pay was $40/hr on Nov 1, 2026 (50 roles) and is $61/hr as of Nov 11, 2026 (114 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 generalist roles

All 238 generalist roles →