OPEN SOURCE · 50+ COUNTRIES · 2M+ PARTICIPANTS
Hear everyone.
Find common ground.
Polis is an open-source platform that uses machine learning to surface consensus among thousands of participants — in real time. No moderators. No talking points. Just collective intelligence.
Trusted by governments, institutions, and communities worldwide
How it works
Three steps to collective intelligence
No moderators, no turn-taking, no shouting matches. Polis lets thousands of people think together — simultaneously.
Write statements
Participants contribute short, seed statements about the topic. Anyone can add their perspective — there's no character limit on ideas, just on individual statements.
Vote on everything
Each participant votes — agree, disagree, or pass — on statements written by others. The algorithm prioritizes the most informative statements for each voter.
See the consensus
Polis runs PCA on the vote matrix and clusters participants into opinion groups. The result: a real-time map of who agrees with whom — and the ideas everyone shares.
Capabilities
Built for real-world deliberation
Real-time clustering
Watch opinion groups form as participants vote. Polis uses PCA and k-means to reveal the hidden structure of a conversation — live, as votes stream in.
Consensus surfacing
Automatically identify the statements that bridge divides — the ideas that every group agrees on, even when they disagree on everything else.
Global scale
Deployed by governments and institutions in 50+ countries. From a class of 30 to a nation of millions — the math scales.
50+
Countries
2M+
Participants
10+
Years in production
100%
Open source
Case study
vTaiwan: from protest to policy
Born from the Sunflower Movement, vTaiwan used Polis to give 200,000+ citizens a direct voice in national policy. The result: legislation on ride-sharing, telemedicine, and online alcohol sales — shaped by collective intelligence, not lobbying.
More than a decade on, it's still running — and remains the longest-running national-scale deployment of Polis anywhere in the world.
View all case studies →Case study
Bowling Green: turning the tables on polarization
When national politics divided a Kentucky city, residents used Polis to find the local common ground that was there all along — then used the results to hold their officials accountable.
Around 2,000 of the city's 65,000 residents took part — a 3% turnout that's remarkably high for a city, and proof that polarization isn't the whole story.
Read the case study →For governments & institutions
Trusted by national governments.
Ready for yours.
Polis Pro offers LLM-powered reporting, EU data sovereignty, UI theme customization, flexible authentication, and on-prem deployment — everything you need for institutional-scale deliberation.
Try it
See Polis in action
Experience how collective intelligence works. This interactive demo lets you explore a real Polis conversation.
[ Interactive demo — coming in Phase 5 ]
Embedded Polis conversation or animated clustering visualization
Support open-source democracy
The Computational Democracy Project is a nonprofit. Your contribution keeps Polis free for everyone — from classrooms to countries.
Donate now