Recruit 50 ideal participants
in 24 hours

Verified participants for any research — product, academic, or market. From $39.9/mo, no per-participant fees.

Live preview · sample results50+ matched · ranked by relevance
Profile
Match
Company
Title
Email
Country
Sarah ChenSarah Chen
94%
Linear
Senior PM, Growth
Check
🇺🇸US
Marcus WrightMarcus Wright
91%
Vercel
Director of Product Research
Check
🇬🇧GB
Aditi KumarAditi Kumar
89%
Ramp
UX Research Lead
Check
🇺🇸US
Tom FitzgeraldTom Fitzgerald
88%
Stripe
Senior Product Manager
Check
🇮🇪IE
Yuki NakamuraYuki Nakamura
86%
Notion
Staff UX Researcher
Check
🇯🇵JP
Emma MüllerEmma Müller
85%
Figma
Lead Product Researcher
Check
🇩🇪DE
David ParkDavid Park
83%
Loom
Principal UX Researcher
Check
🇰🇷KR

4 kinds of research, one search.

From research question to interview booked — in 4 steps

No panel signup. No screener approval. No waiting. Describe who, let AI do the rest.

1
Describe Who You Need

Natural language: by role, industry, geography, expertise, seniority — even niche signals like "shipped a feature in last 6 months" or "published in HCI journals."

2
AI Scans 100+ Sources

Lessie searches LinkedIn, company directories, professional databases, and verified networks — no panel signup, no screener approval, no waiting list.

3
Get Verified Contacts

Every result includes role, company, seniority, and a verified work email — with a relevance score. Direct outreach, no panel intermediary.

4
Run Your Study, Your Way

Send invites, book interviews via Calendly, run surveys, conduct usability tests — your tools, your incentives, your relationships. Lessie just brings the people.

Built for finding the right people — fast

Panels optimize for monetizing professional respondents. Lessie optimizes for your real problem: “find 10 specific people, fast” — whether for product, academic, or launch research.

🎯
Find the Right 0.1%

Prolific gives you students. Respondent.io gives you panel regulars. Lessie understands "fintech PMs who shipped in the last 6 months" or "HCI researchers at top-20 universities" — the niche populations panels can't reach.

  • Natural language: role, industry, expertise, recent activity
  • Multi-source fusion: LinkedIn + academic profiles + company data
  • Scored, ranked results — not a panel-ID dump
✉️
Direct Emails, Not Panel Handles

You contact participants directly through your own email — no panel platform sitting between you and them. Own the relationship, follow up, build a long-term research network.

  • 95%+ verified work emails
  • Send invites from your domain — better response rates
  • Build a private panel you own (not platform-locked)
Recruit in 60 Seconds, Not 6 Weeks

Stop waiting weeks for Respondent.io screener approval or Prolific to fill quotas. Type a query, get a ranked list of verified contacts in 60 seconds, send invites the same hour.

  • Under 60s from query to verified contact list
  • 1-click export to Calendly, Notion, Airtable, CSV
  • AI-drafted personalized invite emails included
💰
Flat $39.9/mo — Recruit Unlimited

Respondent.io: $50-100/participant. User Interviews: $30-75/session. Prolific: $0.50/participant + completion bonuses. Lessie: flat $39.9/mo, recruit 5 or 500 — same cost. Spend your budget on incentives, not platform fees.

  • No per-participant fees, ever
  • No quota limits or screener bottlenecks
  • You pay incentives directly — full budget goes to participants

Lessie vs. Respondent, User Interviews, and LinkedIn

Honest comparison against the tools researchers actually use today.

DimensionProlificRespondent.ioUser InterviewsLessie AI
Pricing$0.50/participant + completion bonuses$50-100/participant + screener fees$30-75/session + monthly feeFlat $39.9/mo, unlimited
Best forConsumer / student studiesConsumer panels, some B2BDesigner / UX panelsB2B + academic + niche industry
Time to first listHours (if quota fills)2-6 weeks (screener review)1-3 weeksUnder 60 seconds
Targeting precisionDemographic + basic prescreensDemographic filtersIndustry + role tagsNatural language, multi-criteria
Contact infoAnonymous panel handlesPanel-mediated, no direct emailSame — platform-mediatedVerified direct work emails
Relationship ownershipPlatform ownsPlatform owns participantsPlatform-mediatedYou own — direct contact

Explore Our Solutions

AI-powered solutions for every business need
🔎
Recruit Research Participants

Recruit 50 ideal B2B research participants in 24 hours — verified PMs, UX researchers, founders by role and industry.

🌟
Find Influencer

Discover and connect with influencers across YouTube, TikTok, Instagram, and more using AI-powered search.

🎯
Find Customer

Generate qualified B2B leads with AI — find decision-makers, verify contacts, and automate outreach.

💰
Find Investor

Scout investors that match your startup — search VCs, angels, and funds by stage, sector, and geography.

💼
Recruiting

Find top talent across LinkedIn, GitHub, and more — AI-powered candidate sourcing and outreach.

🤝
Find Partner

Identify and connect with strategic partners — co-marketing, integrations, and business development.

🏅
Find Coach

Find the right coach for your needs — business, career, executive, and life coaches matched by AI.

🚚
Find Distributor

Discover wholesale, food, and industry distributors — verify contacts and build partnerships with AI.

🌟
Find Influencers

AI influencer marketing platform — find creators across TikTok, Instagram, YouTube & LinkedIn with verified contacts.

🌎
Find Local Influencers

Find influencers by city and region — search creators in NYC, Miami, Chicago, or any location with verified contacts.

🇧🇷
Encontrar Influenciadores

Encontre criadores de conteúdo e influenciadores brasileiros — busque por nicho, cidade e plataforma com e-mails verificados.

🚀
Find Early Adopters

Find your first 100 ideal users — AI searches 50,000+ recently funded startups and their decision-makers in 30 seconds.

🔎
Encontrar Participantes (BR)

Encontre 50 contatos B2B qualificados em 60 segundos — emails verificados por cargo, setor e porte. Diferente de Opinion Box e MindMiners.

🇧🇷
Plataforma de Recrutamento e Seleção (BR)

Plataforma de recrutamento e seleção com IA — encontre candidatos em mais de 100 fontes, com e-mails verificados para contato direto.

💻
Recrutamento de TI (BR)

Recrutamento de TI com IA — encontre desenvolvedores e talentos tech no Brasil, com contatos verificados em minutos.

🏢
Find Property Leads

AI-powered real estate platform — find property leads, verify contacts, and run personalized email campaigns.

🔎
AI People Search

AI people search across LinkedIn, X, GitHub, and Crunchbase — find anyone, anywhere, with verified contact data.

🔍
B2B Market Research

AI-powered B2B market intelligence, competitor mapping, and ICP research in minutes.

📝
LinkedIn Resume Builder

AI-tailored LinkedIn resumes — ATS-optimized, industry templates, free downloads.

📊
B2B Data

Real-time, verified B2B data — firmographics, contacts, intent signals across 100+ sources.

📡
Sales Intelligence

AI sales intelligence platform — find decision-makers with verified contacts, firmographics, and intent signals across 100+ live sources.

🔍
B2B Lead Finder

AI-powered B2B lead finder — verified contacts across 100+ live sources in 2 minutes.

📝
AI Proposal Generator

AI-powered B2B proposal generator — personalized with real prospect intelligence in 30 seconds.

🛡
Background Check for Business

Verify B2B vendors, partners, and suppliers — public-source-only, real-time, no FCRA consumer data.

👤
LinkedIn Profile Optimizer

AI-powered LinkedIn profile audit and rewrite — benchmarked against top performers in your role.

🎬
Hire AI Video Creators

Find and contact AI video creators across TikTok, YouTube & Instagram — verified emails, AI-personalized outreach.

🎥
Hire Creative & Video Talent

Find YouTube video editors, 3D designers, thumbnail designers & social media designers — verified contacts, AI outreach.

Hire React Developers

Find and contact React engineers across GitHub, LinkedIn & more — verified emails, AI-personalized outreach.

🐍
Hire Python Developers

Find and contact Python developers across GitHub, LinkedIn & more — verified emails, AI-personalized outreach.

🐙
Hire PHP Developers

Find and contact PHP developers across GitHub, LinkedIn & more — verified emails, AI-personalized outreach.

🤖
Hire Android Developers

Find and contact Android developers across GitHub, LinkedIn & more — verified emails, AI-personalized outreach.

🖥
Hire Full-Stack Developers

Find and contact full-stack developers across GitHub, LinkedIn & more — verified emails, AI-personalized outreach.

Hire Java Developers

Find and contact Java developers across GitHub, LinkedIn & more — verified emails, AI-personalized outreach.

📑
Resume Database

Search millions of candidate profiles across 100+ live sources — no uploads, contacts verified in real time.

🎯
Skills-Based Hiring

Find candidates by skill, not job title — source talent on proven skills and real work across 100+ sources.

🌐
Diversity Recruiting

Source underrepresented talent at scale — widen your candidate pool with AI across 100+ live sources.

👥
Talent Pool Software

Build living talent pools that never go stale — AI keeps candidate contacts fresh across 100+ sources.

Recruitment Automation Tools

Automate sourcing and candidate outreach end to end — AI finds, verifies, and contacts talent.

📡
Buyer Intent Data

Find B2B accounts in-market now — Lessie AI reads real-time buyer intent signals and hands you verified contacts.

🤖
AI BDR

Autonomous AI BDR agent that finds prospects from live buying signals, verifies contacts, and sends outreach 24/7.

🤖
AI Sales Assistant

An ai sales assistant that finds prospects, verifies contacts, drafts outreach, and follows up automatically.

🎯
AI for Sales Prospecting

AI for sales prospecting that reads live buyer signals and hands you verified contacts to reach out to.

🤖
Automated Prospecting

An automated prospecting agent that finds accounts, verifies contacts, and refills your pipeline automatically.

🤖
Automated Recruiting

Automated recruiting that finds candidates, sends personalized outreach, and tracks pipeline status automatically — no manual busywork.

📡
Buying Signals

Monitor B2B buying signals across content, social, hiring, funding, and tech stack to know who to target and why now.

🔔
Candidate Sourcing Automation

AI-powered candidate sourcing automation that matches actively job-searching candidates to your open roles and automates outreach.

💬
Conversational Marketing

Engage prospects with conversational marketing that keeps every reply going through automatic, multi-turn dialogue.

💬
Intent-Based Marketing

Run intent based marketing with Lessie AI — target in-market accounts with real-time buying signals, not the whole TAM.

📡
Intent Signals

Read real-time intent signals across content, social, hiring, funding, and tech stack to find in-market accounts first.

💬
Lead Nurturing

AI-powered lead nurturing that adapts every touch to real signals until a lead is sales-ready.

👤
LinkedIn Prospecting

AI-powered LinkedIn prospecting that reads engagement, groups, and job changes to find and verify who is ready to talk.

🔄
People on the Move

Find people on the move — passive candidates showing job-change and movement signals before they ever apply.

🎯
Predictive Hiring

Predictive hiring scores candidate move-readiness with AI signals, so you reach the right hire before the req even goes live.

📡
Signal-Based Selling

Sell to the moment: prioritize outreach with signal based selling instead of a static contact list.

🔍
Talent Sourcing Automation

Talent sourcing automation that finds passive candidates via signals, before a req even opens.

🔌
Technographic Data

Spot accounts by technographic data — tools adopted, dropped, or mid-migration — and reach them with verified contacts.

🔥
Warm Leads

Turn cold prospect lists into warm leads by reaching contacts while they show real buying signals.

🔗
Affiliate Partner Finder

Describe your product and audience — Lessie AI surfaces creators, sites, and operators ready to promote you on revenue-share, with verified emails.

📦
Amazon Seller Finder

Find Amazon FBA sellers, private-label brands, and aggregators by category, revenue tier, and marketplace — with verified contacts.

👼
Angel Investor Finder

Describe your stage and thesis — Lessie AI surfaces angels who actively write checks in your space, with verified emails for warm intros.

✍️
B2B Content Creator Finder

Describe the operator audience you want — Lessie AI surfaces newsletter writers, B2B YouTubers, and LinkedIn voices with verified emails.

🪑
Board Advisor Finder

Describe the gap on your board — Lessie AI surfaces domain-expert advisors with operator credibility, plus verified emails.

🎨
Brand Creator Finder

Describe the audience you want — Lessie AI surfaces creators whose audience overlaps your ICP, with verified emails to pitch directly.

🩺
Clinical Advisor Finder

Describe the clinical or scientific question — Lessie AI surfaces physician advisors, KOLs, and researchers with verified emails.

🎤
Conference Speaker Finder

Describe the talk you want on stage — Lessie AI surfaces a shortlist of qualified speakers with verified emails, ready to invite.

💻
CTO Finder

Find CTOs, VP Engineering, and Heads of Platform by stack, scale, and architecture history — with verified emails.

🧑‍💻
Developer Advocate Finder

Describe the developer audience and tech stack — Lessie AI surfaces DevRel leaders, advocates, and community-builders with verified emails.

🔬
Due Diligence Expert Finder

Describe the diligence question — Lessie AI surfaces domain experts who actually know the market, with verified emails for paid expert calls.

🎪
Event Sponsor Finder

Describe your event and audience — Lessie AI surfaces brands likely to sponsor, with the right decision-maker email on every row.

👔
Fractional Executive Finder

Describe the leadership gap — Lessie AI surfaces fractional CMOs, CTOs, CFOs, and COOs with track records that match, plus verified emails.

🧩
Integration Partner Finder

Describe the integration you want to build — Lessie AI surfaces SaaS companies with API surface, customer overlap, and the right BD lead with a verified email.

🏛
Limited Partner Finder

Find LPs — family offices, endowments, fund-of-funds, and HNW allocators — who actually back funds at your stage and thesis.

📈
Marketing Agency Finder

Find marketing agencies by specialty, client portfolio, and geo — with verified founder and BD emails.

📧
Newsletter Sponsor Finder

Find brands that sponsor newsletters in your niche — with verified marketing-decision-maker emails.

📰
Newsletter Writer Finder

Find newsletter writers and operators by niche, audience size, and platform — with verified direct emails.

⚖️
Patent Attorney Finder

Describe the technology and filing strategy — Lessie AI surfaces patent attorneys with proven prosecution history in your space, plus verified emails.

🎙
Podcast Guest Finder

Describe the guest you want — Lessie AI surfaces a vetted shortlist with verified emails, ready to pitch.

🏪
Reseller Finder

Find resellers, distributors, and channel partners who already sell to your ICP — in plain English, with verified emails.

⚙️
RevOps Consultant Finder

Describe the revenue-ops gap — Lessie AI surfaces specialists in your CRM, motion, and stage with verified emails for direct hiring.

☁️
Salesforce Consultant Finder

Find certified Salesforce consultants and partners by cloud, industry, and certification — with verified emails.

🛒
Shopify Agency Finder

Find Shopify Plus partners and design/dev agencies by specialty, brand portfolio, and geo — with verified emails.

📑
Technical Writer Finder

Describe the docs or developer content you need — Lessie AI surfaces technical writers with proven samples in your stack, plus verified emails.

🎯
VP of Sales Finder

Find VPs of Sales, CROs, and Heads of Revenue by stage, ACV, and prior playbook — with verified emails.

📡
Intent Data Providers

Compare intent data providers on data sources, freshness, coverage, and compliance — Lessie AI reads live, people-level signals and hands you verified contacts.

🔢
Lead Prioritization

Prioritize leads and accounts on real buying signals — funding, hiring, tech stack, and job changes — not static firmographics, with verified contacts included.

🤖
Claude for Sales

Turn Claude into an AI sales agent — find verified buyers, enrich contacts, and send personalized outreach from Claude Code, Codex, or any MCP agent.

🖥
Codex for Sales

Turn OpenAI Codex into a sales agent — live buyer search, 95% verified emails, and per-prospect outreach drafts, all from your terminal.

📈
Find Sales Leads

Find, verify, and contact B2B sales leads across 100+ data sources with a plain-English search.

📍
Local Lead Generation

Find local business leads and decision-makers by location and niche, verify their contacts, and automate outreach.

📧
CFO Email List

Build a fresh, verified CFO email list — target finance leaders by industry, company size, and geo, with verified emails.

Personal Injury Lawyers Email List

Build a fresh, verified email list of personal injury attorneys and PI law firms, targeted by state and practice area.

HR Email List

Build a fresh, verified HR email list of CHROs, HR directors, and People Ops leaders by industry, company size, and geo.

📧
CTO Email List

Build a fresh, verified CTO email list — target CTOs and engineering leaders by tech stack, industry, size, and geography.

💸
Creator Monetization Platform

Register your profile and rates once — Lessie matches creators with brand deals automatically, no cold pitching required.

📧
Buy Email List

Build a fresh, verified B2B email list on demand — target by title, industry, and geo instead of buying a stale, resold list.

🍴
Find Food Influencers

Find and vet food, recipe & restaurant creators across TikTok, Instagram & YouTube with verified emails and AI outreach.

FAQ

Get answers to common questions about Lessie AI.

How does Lessie AI find user research participants?

Lessie AI uses an agentic search engine that scans 100+ data sources — LinkedIn, company websites, professional networks, and B2B databases. Describe your ideal participant in natural language (e.g. 'fintech PMs at companies with 50-200 employees'), and Lessie surfaces matched professionals with verified emails and direct contact info, ranked by relevance score.

Why use Lessie instead of Respondent.io or User Interviews?

Respondent.io and User Interviews charge $50-150 per recruited participant, plus screener fees. Lessie is a flat $39.9/mo with no per-participant fee — recruit 5 or 500, same cost. You also get verified emails (not just panel handles), so you can reach out via your own email or Calendly invite, control the relationship, and follow up directly.

What kinds of participants can I find?

Any B2B persona you can describe: SaaS founders, product managers, UX researchers, growth marketers, engineering leads, RevOps, sales reps, customer success, and more. Filter by role, seniority, industry, company size, geography, tech stack, or recent funding. Lessie handles complex multi-criteria queries that traditional research panels cannot.

Can I run incentivized interviews through Lessie?

Lessie provides the participant list with verified contacts. You handle the incentive payment yourself (gift cards, Stripe, etc.) — but because Lessie is flat-fee, you can spend 100% of your incentive budget on participants instead of platform fees. Many teams report saving $1,000+ per study.

How accurate are the participant emails?

Lessie verifies every email in real-time before delivery, with 95%+ deliverability. We prioritize direct work emails over generic ones. If a contact bounces, it is replaced automatically.

Can I export to my recruitment tool?

Yes. Export to CSV, or push directly to Calendly, Notion, HubSpot, or Airtable. You can also use Lessie's built-in outreach to send personalized invitations and book interviews directly.

Can I use Lessie for academic research?

Yes — and this is one of Lessie's strongest use cases. Prolific and MTurk skew toward students and general consumers, which doesn't fit B2B or industry-specific academic studies (e.g. studying fintech adoption among CIOs, or HCI research with senior PMs). Lessie indexes professionals by role, expertise, and industry signals, giving you direct verified emails for IRB-approved outreach. Many academic teams use Lessie alongside Prolific: Prolific for general consumer panels, Lessie for niche industry populations.

How does Lessie work for pre-launch product research?

Pre-launch research is Lessie's sweet spot. You typically have 2-4 weeks before launch to validate messaging, pricing, or positioning with your target persona — and panels need 4-6 weeks just to fill the quota. Describe your launch target (e.g. "growth marketers at SaaS companies running paid acquisition"), get 50-100 verified contacts in 60 seconds, run concept tests or interviews the same week. Many teams use Lessie for both pre-launch validation and post-launch onboarding research.

Ready to recruit your next 50 participants — for any research?