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AllSides Technologies Inc. is an American company that estimates the perceivedpolitical bias of content on online written news outlets. AllSides presents different versions of similar news stories from sources it rates as being on the politicalright,left, andcenter, with a mission to show readers news outside of theirfilter bubble and exposemedia bias.[1] AllSides was created by current owner and CEO John Gable.
Focusing on online publications, AllSides rates sources on a five-point scale. Each source is ranked by unpaid volunteer editors, overseen by two staff members holding political biases different from each other. These crowd-sourced reviews are augmented by editorial reviews performed by staff members. Reassessments may be made based onlike button results fromcrowd-sourced community feedback. AllSides uses these rankings to produce media bias charts listing popular sources.[2] As of 2025, AllSides provides media bias ratings for over 1,400 media outlets and writers.[3]
AllSides was founded in 2012 by John Gable, a formerRepublican political aide turned Silicon Valley manager working atNetscape, and Scott McDonald, a software developer.[4][5][6][7][8]
In 2016, AllSides partnered with activistJoan Blades to launch a classroom program, AllSides for Schools, and has partnered with other organizations to provide programs such as Mismatch, a platform to connect users who differ politically and geographically.[9][10]
AllSides staff self-report their political leanings.[2] In 2012, Gable stated that AllSides aims to highlightmedia bias in the United States and "show all the news from the left, center and right".[5] As of 2021, AllSides is funded through paid memberships, one-time donations,media literacy training, and online advertisements, operating both for profit and a stated public mission.[11][12]
AllSides focuses only on online written content (not TV, radio, or podcasts likeAd Fontes Media).[2][13] It rates sources on aleft–right scale that is then grouped into five categories (left,leans left, center,leans right, and right) instead of a gradient which the company acknowledged sacrifices precision in favor of simplicity.[2] AllSides posts these ratings alongside the articles it posts on its site.
AllSides partnered with Living Room Conversations, a nonprofit founded byprogressive entrepreneur and activistJoan Blades, on educational content through a related organization called AllSides for Schools. Gable, Blades, and their associated organizations have produced lesson plans for schools on how to navigate political conversations and helped create Mismatch, a platform to connect students who differ politically and geographically.[9][10][14]
Jake Sheridan from thePoynter Institute noted the controversy surrounding bias rating charts in general and recommended that readers consider the reliability of sources, as in the Ad Fontes algorithm, in addition to possible bias. He also quotedKelly McBride for acknowledging bias as an important factor, but not the most important, especially if the charts give a false sense of reliability. Sheridan quoted Tim Groeling as cautioning that while bias is important, charts are not something most consumers would navigate. Both Groeling and McBride praised the methodology of AllSides and Ad Fontes.[2]