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Community Notes - Wikipedia

reference
Wikipedia·en.wikipedia.org/wiki/Community_Notes

Credibility Rating

3/5
Good(3)

Good quality. Reputable source with community review or editorial standards, but less rigorous than peer-reviewed venues.

Rating inherited from publication venue: Wikipedia

Relevant to AI safety researchers interested in scalable human oversight mechanisms, collective epistemics, and governance models for managing misinformation—potential inspiration for AI content moderation or human-AI collaborative verification systems.

Metadata

Importance: 35/100wiki pagereference

Summary

Community Notes is a crowdsourced fact-checking and context-adding feature on X (formerly Twitter) that allows users to collaboratively add informational notes to potentially misleading posts. It uses a bridging-based ranking algorithm designed to surface notes that find consensus across politically diverse users, rather than majority-vote systems that could be captured by partisan groups. The system represents an approach to combating misinformation at scale through collective intelligence mechanisms.

Key Points

  • •Uses a 'bridging-based' algorithm that requires agreement from users with diverse viewpoints to approve notes, reducing partisan capture.
  • •Represents a public goods approach to content moderation, distributing fact-checking labor across the user base rather than relying solely on platform moderators.
  • •The algorithm and data are open-source, allowing external researchers to audit and study the system's effectiveness and biases.
  • •Relevant to AI safety as a case study in human oversight mechanisms, collective epistemics, and scalable content moderation infrastructure.
  • •Demonstrates tradeoffs between speed, accuracy, and consensus in information quality systems that may inform AI governance designs.

Cited by 2 pages

PageTypeQuality
X Community NotesProject54.0
AI-Era Epistemic InfrastructureApproach59.0

Cached Content Preview

HTTP 200Fetched Mar 20, 202698 KB
# Community Notes

Community Notes

Fact-checking feature on X

| Community Notes |
| --- |
| [![Community Notes](https://upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Community_Notes_logo.svg/500px-Community_Notes_logo.svg.png)](https://en.wikipedia.org/wiki/File:Community_Notes_logo.svg)<br>Logo of Community Notes on X |
| [![Rating a Community Note on X](https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/CommunityNotesRating.png/500px-CommunityNotesRating.png)](https://en.wikipedia.org/wiki/File:CommunityNotesRating.png)<br>Rating a Community Note on X |
| Other names | Birdwatch |
| [Original author](https://en.wikipedia.org/wiki/Programmer "Programmer") | [Twitter, Inc.](https://en.wikipedia.org/wiki/Twitter,_Inc. "Twitter, Inc.") |
| [Developer](https://en.wikipedia.org/wiki/Programmer "Programmer") | [X Corp.](https://en.wikipedia.org/wiki/X_Corp. "X Corp.") |
| Initial release | January 25, 2021 |
| Written in | [Python](https://en.wikipedia.org/wiki/Python_(programming_language) "Python (programming language)") |
| [Platform](https://en.wikipedia.org/wiki/Computing_platform "Computing platform") | [X](https://en.wikipedia.org/wiki/Twitter "Twitter") |
| [Type](https://en.wikipedia.org/wiki/Software_categories#Categorization_approaches "Software categories") | - [Crowdsourcing](https://en.wikipedia.org/wiki/Crowdsourcing "Crowdsourcing")<br>- [Fact-checking](https://en.wikipedia.org/wiki/Fact-checking "Fact-checking")<br>- [Content moderation](https://en.wikipedia.org/wiki/Content_moderation "Content moderation") |
| [License](https://en.wikipedia.org/wiki/Software_license "Software license") | [Apache-2.0 license](https://en.wikipedia.org/wiki/Apache_License "Apache License") |
| Website | [communitynotes.x.com](https://communitynotes.x.com/) |
| [Repository](https://en.wikipedia.org/wiki/Repository_(version_control) "Repository (version control)") | [github.com/twitter/communitynotes](https://github.com/twitter/communitynotes) |

**Community Notes** (formerly known as **Birdwatch**) is a [feature](https://en.wikipedia.org/wiki/Software_feature "Software feature") on [X (formerly Twitter)](https://en.wikipedia.org/wiki/Twitter "Twitter") where contributors can add [context](https://en.wikipedia.org/wiki/Context_(linguistics) "Context (linguistics)") such as [fact-checks](https://en.wikipedia.org/wiki/Fact-checking "Fact-checking") under a post, image or video. It is a community-driven [content moderation](https://en.wikipedia.org/wiki/Content_moderation "Content moderation") program, intended to provide helpful and informative context, based on a [crowd-sourced](https://en.wikipedia.org/wiki/Crowd-sourced "Crowd-sourced") system. Notes are applied to potentially [misleading](https://en.wikipedia.org/wiki/Misleading "Misleading") content by a [bridging-based algorithm](https://en.wikipedia.org/wiki/Bridging-based_algorithms "Bridging-based algorithms") not based on [majority rule](https://en.wikipedia.org/wiki/Majority_rule "Ma

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