Dia Browser records 1,254,172 monthly visits with +108.4% month-over-month growth and Free pricing. Prolific records 18,697,671 monthly visits with -1.8% growth and Paid pricing.
The AI browser that reads between your tabs
High-quality human data for AI training, evaluation, and research
| Dimension / Metric | | |
|---|---|---|
| Official Domain | diabrowser.com | prolific.com |
| Pricing Model | Free | Paid |
| Monthly Visits | 1.25M (1,254,172) | 18.7M (18,697,671) |
| MoM Traffic Delta | +652.37K (+108.4%) | -352.04K (-1.8%) |
| Primary Market & Share | 🇺🇸 United States (29%) | 🇺🇸 United States (48.8%) |
| Direct Visits / mo | 740.36K | 12.98M |
| User Rating | 4.3 | 4.6 |
| Supported Platforms | Website | Website |
The AI browser that reads between your tabs
Starts the day with a consolidated view of your calendar, inbox and key links so you know what is coming before work begins.
Ask once and Dia searches open tabs along with connected Slack, Notion, Teams, GSuite and other tools to answer with full context.
Requests for a deck or a summary come back as presentable slides and shareable reports rather than raw chat text.
Surfaces where work is actually happening, like a specific pull request or spec draft, so one click lands you in the right place.
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.
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.
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
Enterprise-grade data annotation and AI alignment workforce, but less self-serve for academic study recruitment and casual surveys.
Free / Open-sourceProvides an open-source desktop AI workforce for browser and terminal tasks, though less polished as a daily web browser.
SpecialistAI data infrastructure for building production-grade models
SpecialistAI data infrastructure for building production-grade models
SpecialistSpecializes in video-based consumer interviews and AI qualitative analysis, but less focused on quantitative academic survey panels.
SpecialistSpecializes in video-based consumer interviews and AI qualitative analysis, but less focused on quantitative academic survey panels.
SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.
SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.
Combines local LLMs with web automation inside a private browser, though lacking Dia's native workspace integration.
Combines local LLMs with web automation inside a private browser, though lacking Dia's native workspace integration.
SpecialistOperates as a browser extension rather than a dedicated AI browser, excelling at page summarization and writing.
SpecialistOperates as a browser extension rather than a dedicated AI browser, excelling at page summarization and writing.
Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.
Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.
Integrates multi-model AI assistants for research automation, though with a different interface and navigation paradigm.
Integrates multi-model AI assistants for research automation, though with a different interface and navigation paradigm.
Provides an AI companion for page summarization and natural-language search within macOS, though in early alpha.
Provides an AI companion for page summarization and natural-language search within macOS, though in early alpha.
