Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. TextSight records 51,453 monthly visits with +35.8% growth and Freemium pricing.
High-quality human data for AI training, evaluation, and research
Detect AI writing, humanize the flagged sentences, then recheck in the same tab
| Dimension / Metric | | |
|---|---|---|
| Official Domain | prolific.com | textsight.ai |
| Pricing Model | Paid | Freemium |
| Monthly Visits | 18.7M (18,697,671) | 51.45K (51,453) |
| MoM Traffic Delta | -352.04K (-1.8%) | +13.56K (+35.8%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇺🇸 United States (22.8%) |
| Direct Visits / mo | 12.98M | 9.64K |
| User Rating | 4.6 | 3.9 |
| 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.
Detect AI writing, humanize the flagged sentences, then recheck in the same tab
Every sentence gets its own AI confidence score and colour code inside your text, so you can see which lines to fix instead of reacting to one blunt overall verdict. Sentence-level detail starts on the Starter plan.
A 0–100 score that rises as your writing becomes more natural, recomputed on every scan so you can watch the number move as you edit.
The humanizer rewrites only the passages that read as AI-written, keeping your meaning and tone. Free accounts get around 260 words per rewrite; paid plans add thousands of words a month plus Advanced, Business and Casual modes.
Detection, rewriting and re-scoring happen in one window. After a humanize pass you recheck the same text and compare the before-and-after AI percentage side by side.
Paraphrase, proofread and summarize text with an AI writing workspace
Paraphrase, proofread and summarize text with an AI writing workspace
AI content detection and a full writing toolkit in one place
AI content detection and a full writing toolkit in one place
SpecialistFree browser AI humanizer that rewrites AI text to read naturally
SpecialistFree browser AI humanizer that rewrites AI text to read naturally
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
SpecialistHumanize AI text and check how human it reads
SpecialistHumanize AI text and check how human it reads
AI detector, plagiarism and content-quality checks in one scan
AI detector, plagiarism and content-quality checks in one scan
SpecialistMultilingual AI detector with sentence-level insight
SpecialistMultilingual AI detector with sentence-level insight
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
Humanize AI text and detect it — one clean, all-in-one writing suite
Humanize AI text and detect it — one clean, all-in-one writing suite
Enterprise-grade data annotation and AI alignment workforce, but less self-serve for academic study recruitment and casual surveys.
SpecialistFree AI detector with sentence-level insight and a humanizer
SpecialistFree AI detector with sentence-level insight and a humanizer
Turn AI-generated text into natural, human-sounding writing
Turn AI-generated text into natural, human-sounding writing
