Kastle vs Prolific
How the two compare for AI training work, using pay and job counts from listings that are open right now.
 Prolific | ||
|---|---|---|
| Open jobs here | 1 | 591 |
| Median pay | $30/hr | $30/hr |
| Typical range | $30–$30/hr | $23–$115/hr |
| Highest posted | $30/hr | $200/hr |
| Rating | 0.0 | 0.0 |
| Would recommend | 0% | 0% |
| Hires most for | AI Expert - Customer Success & Support | Data Annotation & Labeling, Linguistic Annotation, AI Expert - Clinical & Medical |
| Founded | 2024 | 2014 |
| Country limits | None listed | None listed |
About Kastle
YC S24 startup building AI voice agents for mortgage servicing: payments, escrow, loss mitigation. Founded 2024, SF, team of 10, $2.8M raised. Hiring, but roles are SF in-person, not remote.
Kastle pay, process, and 1 open jobsAbout Prolific
Trusted research platform connecting participants with academic and commercial studies.
Prolific pay, process, and 591 open jobsCommon questions
Does Kastle or Prolific pay more?
Based on live listings, Kastle pays more: a median of $30/hr against $30/hr at Prolific.
Which has more open jobs, Kastle or Prolific?
Prolific has 591 open AI training jobs here, compared with 1 at Kastle.
Can I work for both Kastle and Prolific?
Usually, yes. Most AI training work is freelance or contract, and many people work on several platforms to keep a steady flow of tasks. Check each contract for exclusivity terms.