
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. supermemory records 156,579 monthly visits with -7.7% growth and Contact for Pricing pricing.

A memory and continual-learning engine that gives any AI agent persistent context
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | prolific.com | supermemory.ai |
| Pricing Model | Paid | Contact for Pricing |
| Monthly Visits | 18.7M (18,697,671) | 156.58K (156,579) |
| MoM Traffic Delta |
| -352.04K (-1.8%) |
| -12.98K (-7.7%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇺🇸 United States (46.2%) |
|---|
| Direct Visits / mo | 12.98M | 71.16K |
|---|
| User Rating | 4.6 | 4.5 |
|---|
| 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.

A memory and continual-learning engine that gives any AI agent persistent context
A dedicated model extracts, merges, infers and forgets across stored context so the memory graph keeps improving instead of simply accumulating.
Learnings link to the entities, sources and moments around them, storing not just content but a time-aware map of how facts relate.
Memory lives outside model providers and is used through APIs, SDKs, plugins and MCP, so context carries across models and tools.
Relevant memories are injected as tokens into the prompt at request time, giving agents relevant context without unbounded transcripts.

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

SpecialistFocuses on tool integrations and authentication for agents, complementing memory engines rather than storing cross-session context.
#2
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
#3
Enterprise-grade data annotation and AI alignment workforce, but less self-serve for academic study recruitment and casual surveys.


Free / Open-sourceOne open-source AI gateway for 100+ LLM providers


SpecialistAI data infrastructure for building production-grade models

SpecialistThe universal context engine connecting agents to data, tools, and models

SpecialistSpecializes in video-based consumer interviews and AI qualitative analysis, but less focused on quantitative academic survey panels.

SpecialistOffers enterprise-grade scalable vector search and RAG storage, but lacks supermemory's automated agent memory graph abstractions.

SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.

SpecialistAI gateway, observability and guardrails for production LLM apps
Free / Open-sourceProvides open-source persistent user modelling for stateful agents, but focuses more on conversational psychology than universal vector graphs.
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
SpecialistFocuses on tool integrations and authentication for agents, complementing memory engines rather than storing cross-session context.
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
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.
SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.