Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. Solarch records 742 monthly visits with +286.5% growth and Freemium pricing.
High-quality human data for AI training, evaluation, and research
Draw the architecture; Solarch writes the code that matches it
| Dimension / Metric | | |
|---|---|---|
| Official Domain | prolific.com | solarch.dev |
| Pricing Model | Paid | Freemium |
| Monthly Visits | 18.7M (18,697,671) | 742 (742) |
| MoM Traffic Delta | -352.04K (-1.8%) | +550 (+286.5%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇺🇸 United States (100%) |
| Direct Visits / mo | 12.98M | 219 |
| User Rating | 4.6 | 4.3 |
| 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.
Draw the architecture; Solarch writes the code that matches it
Model the whole backend — controllers, services, repositories, tables, DTOs and queues — on one surface with 16 semantic edge types across 8 families.
An illegal connection such as wiring a controller straight to a table is rejected the instant you draw it, based on 7 anti-patterns and 3 conditional checks.
Stage one compiles the graph deterministically into skeletons with zero tokens; stage two uses surgical AI to fill only the empty function bodies.
A LangGraph-powered architect grounds every plan in a vector-indexed library of canonical patterns instead of autocompleting from scratch.
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.
A spec-driven AI IDE and agent platform that plans, builds, reviews, and verifies real engineering work.
A spec-driven AI IDE and agent platform that plans, builds, reviews, and verifies real engineering work.
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.
AI diagrams and technical design docs built from your code and systems
AI diagrams and technical design docs built from your code and systems
Free / Open-sourceReactive TypeScript backend with database, functions and AI gateway
Free / Open-sourceReactive TypeScript backend with database, functions and AI gateway
SpecialistAI data infrastructure for building production-grade models
SpecialistAI data infrastructure for building production-grade models
Agent orchestration platform for your whole software development lifecycle
Agent orchestration platform for your whole software development lifecycle
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.
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.
SpecialistAI-led customer interviews and research insights at scale
SpecialistAI-led customer interviews and research insights at scale
