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Compared as of October 2026

How Mantle compares with Ground News and AllSides

All three show how outlets across the political spectrum cover the news. Ground News groups coverage from a very large number of sources and rates them with the average of three outside raters. AllSides puts an article from the left, the center and the right side by side under a summary its staff writes, and rates outlets with its own methods. Mantle groups coverage from 88 outlets, rates them itself, and highlights the loaded words in that coverage.

Everything below about Ground News and AllSides comes from their own websites, help pages and app store listings, checked on . Prices are in US dollars and can change.

Mantle, Ground News and AllSides compared, as of October 2026
FeatureMantleGround NewsAllSides
For each storyOne page per story: how many of 88 outlets at each point of the spectrum cover it, a neutral headline and summary, key points with how widely each is reported, how each side frames it, and a link to every article.How many sources cover the story and the share on the left, center and right, with their headlines. A Bias Comparison tab summarizes how each side is reporting it.Selected stories, each with a summary and three articles side by side: from the left, the center and the right.
Where outlet ratings come fromMantle’s own judgement of each outlet’s news coverage: story selection, framing and sourcing, with independent published ratings consulted as one input. Each rating has a confidence level, a written note and a public history. How Mantle rates outletsThe average of three outside raters: AllSides, Ad Fontes Media and Media Bias/Fact Check. Its factuality score averages two of them; its ownership categories are its own research.Its own methods: multi-partisan editorial reviews, blind bias surveys, independent reviews and third-party data. Community feedback can prompt a review but does not set a rating.
Rating scaleFive points: Far Left, Left, Center, Right, Far Right.Seven points: Far Left, Left, Lean Left, Center, Lean Right, Right, Far Right.Five points: Left, Lean Left, Center, Lean Right, Right, plus a number on its Media Bias Meter.
Stories one side is missingHidden Echoes, free: stories one side covers far less than expected, given how much each side published that day. Readers can set it to the outlets they read.Blindspot: stories covered disproportionately by one side of the spectrum, in a feed and a Blindspot Report newsletter. Full access to the feed comes with its Premium plan.No regular feature of this kind found on its site.
Loaded languageHighlights loaded words in the headlines and excerpts on every story page, says why each one carries a judgement and gives a neutral alternative. The full word list (364 entries) is public.No highlighting of loaded words found on its site.A guide to 16 types of media bias, and Bias Checker, an AI tool that marks potentially biased text in an article you submit. Paid plans include 50 to 150 checks a month.
SummariesWritten by AI (Claude, made by Anthropic) under published rules, rewritten if it uses a word on Mantle’s list, and held back if the rewrite still does.Written with AI, which it says works under human oversight.Written by its staff. It says everything it publishes is written by people.
PriceFree to read, with no account needed. Optional membership: $5 a month or $50 a year.A free version. Paid plans (Pro, Premium, Vantage) cost $0.99 to $9.99 a month on the US App Store; factuality and ownership details need one.Free to read. Paid memberships cost $4.99, $9.99 or $14.99 a month, or $49, $99 or $149 a year.
AdsFunded primarily by readers, with limited ads. No political ads.None on its own platform, it says.Ads on the free version; a paid membership removes them.
AppsA website made for phones and computers. No app in the app stores yet.iPhone, iPad, Mac and Android apps, and a browser extension for Chrome, Firefox and Edge.iPhone and Android apps.

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Services change, and this page should describe each one as it is. If something here is wrong or out of date, about Mantle or about either service, tell us and we will correct it.

Mantle is not affiliated with Ground News or AllSides. Their names are used only to compare.

Sources, checked 30 October 2026