
Delivers broader real-time grammar and tone correction across web apps, but lacks Scribbr's deep academic focus and citation formatting.
#1Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. Scribbr records 7,530,803 monthly visits with +14.6% growth and Freemium pricing.

Academic proofreading, plagiarism checking and AI-powered writing tools in one place
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | prolific.com | scribbr.com |
| Pricing Model | Paid | Freemium |
| Monthly Visits | 18.7M (18,697,671) | 7.53M (7,530,803) |
| MoM Traffic Delta | -352.04K (-1.8%) |
| +957.01K (+14.6%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇺🇸 United States (32.1%) |
|---|
| Direct Visits / mo | 12.98M | 2.47M |
|---|
| User Rating | 4.6 | 4.4 |
|---|
| Supported Platforms | Website | Website |
|---|
High-quality human data for AI training, evaluation, and research
Filter participants by detailed demographic, professional, and behavioural criteria and reach narrow or representative samples rather than a generic crowd.
Collect human preference data for model fine-tuning, run safety evaluations and red-teaming, and use a feedback API to plug humans into automated pipelines.
Attention checks, honesty screening, and approval workflows help filter out careless or fraudulent responses before you analyse results.
Publish a study and begin collecting responses quickly, with tooling that supports screening, quotas, and longitudinal designs.

Academic proofreading, plagiarism checking and AI-powered writing tools in one place
A vetted academic editor reviews your paper within hours and returns tracked changes, comments and an explanation letter.
Scans your document against a large web and publication database to surface potentially unoriginal passages before submission.
Flags text likely generated by large language models and offers a rewriting mode aimed at making AI-assisted drafts sound more natural.
Creates and verifies references in APA, MLA, Chicago, AMA, IEEE and ACS styles from a URL, DOI or title search.

Delivers broader real-time grammar and tone correction across web apps, but lacks Scribbr's deep academic focus and citation formatting.
#1Provides robust paraphrasing and citation tools, but focuses less on comprehensive academic proofreading and human editing.
SpecialistAI content detection and a full writing toolkit in one place
SpecialistFocuses specifically on AI content detection and writing verification for educators, but lacks academic editing and proofreading workflows.

SpecialistAI grammar, spelling and style checker for 30+ languages

Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.

SpecialistProvides enterprise-grade AI detection and plagiarism checking, but does not offer human academic proofreading or citation generation.
Offers specialized academic writing assistance and AI citation generation, but lacks Scribbr's human proofreading and formal editing services.

SpecialistThe environments frontier AI trains on, and the agents that do the recurring work

Enterprise-grade data annotation and AI alignment workforce, but less self-serve for academic study recruitment and casual surveys.

SpecialistAI data infrastructure for building production-grade models

SpecialistExpress yourself with confidence — rewrite, proofread and summarize in one click
Delivers broader real-time grammar and tone correction across web apps, but lacks Scribbr's deep academic focus and citation formatting.
Provides robust paraphrasing and citation tools, but focuses less on comprehensive academic proofreading and human editing.
SpecialistAI content detection and a full writing toolkit in one place
SpecialistFocuses specifically on AI content detection and writing verification for educators, but lacks academic editing and proofreading workflows.
SpecialistAI grammar, spelling and style checker for 30+ languages
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
SpecialistProvides enterprise-grade AI detection and plagiarism checking, but does not offer human academic proofreading or citation generation.
Offers specialized academic writing assistance and AI citation generation, but lacks Scribbr's human proofreading and formal editing services.
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
SpecialistAI data infrastructure for building production-grade models
SpecialistExpress yourself with confidence — rewrite, proofread and summarize in one click