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Compare AI training platforms, head to head

Deciding between two platforms? Each comparison lays out real hourly pay, how hard each is to join, the work it hires for, how it pays out, and how many roles are open right now, so you can pick the one worth your time. All 65 platforms also have their own full review.

Outlier (Scale AI) vs DataAnnotation

up to ~$31/hr · $15–$100+/hr

Outlier (Scale AI) vs Remotasks

up to ~$31/hr · $3–$15/hr; specialist tasks $15–$50/hr

Outlier (Scale AI) vs Mercor

up to ~$31/hr · $55–$150/hr

Outlier (Scale AI) vs Prolific

up to ~$31/hr · $8–$150/hr

Outlier (Scale AI) vs Appen

up to ~$31/hr · $2.50–$14/hr micro; $20–$40/hr evaluators

Outlier (Scale AI) vs Alignerr

up to ~$31/hr · $35–$130/hr

Outlier (Scale AI) vs Clickworker

up to ~$31/hr · Per task, cents to a few dollars; ~$6–$15/hr effective

DataAnnotation vs Remotasks

$15–$100+/hr · $3–$15/hr; specialist tasks $15–$50/hr

DataAnnotation vs Mercor

$15–$100+/hr · $55–$150/hr

DataAnnotation vs Prolific

$15–$100+/hr · $8–$150/hr

DataAnnotation vs Appen

$15–$100+/hr · $2.50–$14/hr micro; $20–$40/hr evaluators

DataAnnotation vs Alignerr

$15–$100+/hr · $35–$130/hr

DataAnnotation vs Clickworker

$15–$100+/hr · Per task, cents to a few dollars; ~$6–$15/hr effective

Remotasks vs Mercor

$3–$15/hr; specialist tasks $15–$50/hr · $55–$150/hr

Remotasks vs Prolific

$3–$15/hr; specialist tasks $15–$50/hr · $8–$150/hr

Remotasks vs Appen

$3–$15/hr; specialist tasks $15–$50/hr · $2.50–$14/hr micro; $20–$40/hr evaluators

Remotasks vs Alignerr

$3–$15/hr; specialist tasks $15–$50/hr · $35–$130/hr

Remotasks vs Clickworker

$3–$15/hr; specialist tasks $15–$50/hr · Per task, cents to a few dollars; ~$6–$15/hr effective

Mercor vs Prolific

$55–$150/hr · $8–$150/hr

Mercor vs Appen

$55–$150/hr · $2.50–$14/hr micro; $20–$40/hr evaluators

Mercor vs Alignerr

$55–$150/hr · $35–$130/hr

Mercor vs Clickworker

$55–$150/hr · Per task, cents to a few dollars; ~$6–$15/hr effective

Prolific vs Appen

$8–$150/hr · $2.50–$14/hr micro; $20–$40/hr evaluators

Prolific vs Alignerr

$8–$150/hr · $35–$130/hr

Prolific vs Clickworker

$8–$150/hr · Per task, cents to a few dollars; ~$6–$15/hr effective

Appen vs Alignerr

$2.50–$14/hr micro; $20–$40/hr evaluators · $35–$130/hr

Appen vs Clickworker

$2.50–$14/hr micro; $20–$40/hr evaluators · Per task, cents to a few dollars; ~$6–$15/hr effective

Alignerr vs Clickworker

$35–$130/hr · Per task, cents to a few dollars; ~$6–$15/hr effective

micro1 vs Mercor

$50–$270/hr · $55–$150/hr

micro1 vs Outlier (Scale AI)

$50–$270/hr · up to ~$31/hr

micro1 vs AfterQuery

$50–$270/hr · $50–$125/hr

AfterQuery vs Mercor

$50–$125/hr · $55–$150/hr

AfterQuery vs Handshake AI

$50–$125/hr · $55–$150/hr

AfterQuery vs Alignerr

$50–$125/hr · $35–$130/hr

OpenTrain AI vs micro1

$15–$60/hr · $50–$270/hr

OpenTrain AI vs Outlier (Scale AI)

$15–$60/hr · up to ~$31/hr

OpenTrain AI vs Alignerr

$15–$60/hr · $35–$130/hr

Handshake AI vs Mercor

$55–$150/hr · $55–$150/hr

Handshake AI vs Outlier (Scale AI)

$55–$150/hr · up to ~$31/hr

Handshake AI vs Alignerr

$55–$150/hr · $35–$130/hr

xAI (SpaceXAI) vs Outlier (Scale AI)

$40–$65/hr · up to ~$31/hr

xAI (SpaceXAI) vs DataAnnotation

$40–$65/hr · $15–$100+/hr

xAI (SpaceXAI) vs micro1

$40–$65/hr · $50–$270/hr

xAI (SpaceXAI) vs OpenTrain AI

$40–$65/hr · $15–$60/hr

Terac vs Mercor

$55–$105/hr · $55–$150/hr

Terac vs Prolific

$55–$105/hr · $8–$150/hr

Terac vs micro1

$55–$105/hr · $50–$270/hr

Sigma AI vs Appen

~$19–$51/hr · $2.50–$14/hr micro; $20–$40/hr evaluators

Sigma AI vs TELUS Digital AI

~$19–$51/hr · $8–$18/hr; US raters ~$17/hr

Sigma AI vs Clickworker

~$19–$51/hr · Per task, cents to a few dollars; ~$6–$15/hr effective

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