Best AI training platforms for math and STEM experts (2026)
The best AI training platforms for math and STEM experts right now are AfterQuery Experts, Mercor and Braintrust. AfterQuery Experts ranks first out of the 16 platforms that fit, and advertises $40–250/hr. The ranking rule is under the table; no platform pays to be listed.
Ranked list
How it's ranked: Platforms with math, science or STEM projects, ranked by advertised pay ceiling, then by payout reliability. Grades last checked November 6, 2026. Apply opens the platform's own sign-up page. Showing the top 12 of 16; see all platforms.
| # | Platform | Typical top rate | Getting in | Pays reliably? | Why it's here, and the catch | Apply |
|---|---|---|---|---|---|---|
| 1 |  AfterQuery | No public job listPlatform says $40–250/hr | Hard to get in | Some delays | Runs math and science projects.Watch out: Applications with no update for weeks or months | Apply on AfterQuery Experts |
| 2 |  Mercor364 open jobs | $90/hrPlatform says $20–200/hr | Some screening | Pays on time | Runs math and science projects. Best for grad degree holders.Watch out: Long waits with no offer after passing the interview | Apply on Mercor |
| 3 |  Braintrust58 open jobs | $31/hrPlatform says $20–200/hr | Some screening | Pays on time | Runs math and science projects.Watch out: Fewer AI training listings than the big platforms | Apply on Braintrust |
| 4 |  Alignerr450 open jobs | $75/hrPlatform says $15–150/hr | Hard to get in | Some delays | Runs math and science projects. Best for math, medical and law experts.Watch out: Long gaps with no project after passing | Apply on Alignerr |
| 5 |  DataAnnotation104 open jobs | $125/hrPlatform says $20–150/hr | Hard to get in | Pays on time | Runs math and science projects.Watch out: Accounts deactivated without explanation, sometimes with unpaid balances reported | Apply on DataAnnotation |
| 6 |  micro1347 open jobs | $90/hrPlatform says $15–135/hr | Some screening | Some delays | Runs math and science projects. Best for STEM and domain experts.Watch out: Weeks of silence after the AI interview | Apply on micro1 |
| 7 |  SME Careers264 open jobs | $50/hrPlatform says $20–130/hr | Some screening | Pays on time | Runs math and science projects. Best for STEM grad degree holders.Watch out: Matching can take weeks | Apply on SME Careers |
| 8 |  Handshake AI3 open jobs | Too few pricedPlatform says $30–125/hr | Some screening | Pays on time | Runs math and science projects. Best for US grad students and PhDs.Watch out: Proposed class action (filed July 2026, N.D. Cal.) alleges contractor misclassification and unpaid onboarding; allegations only so far | Apply on Handshake AI |
| 9 |  Remo | No public job listPlatform says $25–105/hr | Some screening | Some delays | Runs math and science projects.Watch out: Monthly payouts | Apply on Remo Experts (Rex) |
| 10 |  xAI5 open jobs | Too few pricedPlatform says $35–100/hr | Hard to get in | Pays on time | Runs math and science projects.Watch out: About 500 generalist tutors were laid off in September 2025 shortly after being asked to take specialty tests | Apply on xAI AI Tutor |
| 11 |  Snorkel AI | No public job listPlatform says $10–100/task | Hard to get in | Some delays | Runs math and science projects. Best for US-based PhDs and master's holders.Watch out: Submitted work marked not accepted and left unpaid | Apply on Snorkel AI Expert Community |
| 12 |  Mindrift36 open jobs | $31/hrPlatform says $15–90/hr | Some screening | Pays on time | Runs math and science projects.Watch out: Work droughts between projects | Apply on Mindrift |
Where to go next
- Open math AI training jobs
- Open science AI training jobs
- What is RLHF? Reinforcement learning from human feedback, explained simply
- Find my platformFour questions, one shortlist
- New this weekOnly the freshest listings
- Pay calculatorWhat a rate means per month
- AfterQuery Experts vs MercorSide by side
Other lists
Questions about this list
How did Rubric rank the best AI training platforms for math and STEM experts?
Platforms with math, science or STEM projects, ranked by advertised pay ceiling, then by payout reliability. Ratings are Rubric's 1–5 grades from platform terms, help pages and worker reports, last checked 2026-11-06. No platform pays to be listed or ranked. Full methodology.
Which of these is easiest to get into?
Mercor, with an entry-difficulty grade of 3/5 (application: ~30 min: resume upload + 20-min AI interview).
Which pays the most?
AfterQuery Experts has the highest advertised ceiling on this list at $40–250/hr. Top rates usually go to experienced specialists; new workers start lower.
Which pays most reliably?
Mercor has the best payout-reliability grade here (4/5), paying weekly, every wednesday via Stripe (Wise in a few countries).