Braintrust · STEM & research
Biology PhD Expert - AI Annotation
Listed on Braintrust as “Biology PhD Expert - AI Annotation”
How this rate compares
This listing
$40–$90 per hour
Typical in STEM & research
$40–$65 per hour
Within the typical range
Typical: the middle of the lowest and highest rates posted by 193 listings in this category on MantaWork, in US dollars.
What this actually is
You design problems that stump current AI models, evaluate AI reasoning against the correct answer, write rubrics, and provide expert feedback. Often the highest-paid category because the expertise pool is small. The platform title (Biology PhD Expert - AI Annotation) reflects the rate band and the expertise required, not the day-to-day work.
Original posting from Braintrust
Work location: United States; Canada; Europe; France; Poland; Portugal; Romania; Spain; United Kingdom
Employer: Leading AI Lab, listed through Braintrust.
Pay: $40 to $90 an hour, as the Braintrust listing states it.
Quoted from Braintrust's public listing on 2026-11-15. We don't edit platform copy; honest framing is in the title and the “what this actually is” block above.
Related AI training jobs
Anyone AI · STEM & research
Mathematics Expert (Netherlands)
$40/hr · Remote · USD
Anyone AI · STEM & research
Computer Science PhD (Germany)
$150/hr · Remote · USD
Anyone AI · STEM & research
Biology Expert - AI Trainer (Turkey)
$40/hr · Remote · USD
Anyone AI · STEM & research
Computer Science PhD (Finland)
$150/hr · Remote · USD
More on this platform
About Braintrust
A talent marketplace that re-lists contract roles from other companies. Only AI training and data roles are shown here. Each listing names the employer.
See all AI training jobs
Browse by category and compare across all eight platforms we cover.