TubeLens scores YouTube videos 0-10 on quality using transcripts and 28 signals. Free Reader tier; Editor from US$ 20/mo. See features and pricing.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
TubeLens is a web-based analysis tool that rates YouTube videos on quality rather than popularity. A user pastes a video URL and receives a score from 0 to 10, a set of detected signals and a justification that cites excerpts from the transcript. The company describes itself as an editorial newsroom that uses AI to challenge popularity as a yardstick, and states that no engagement metric enters the score.
The product is made by INOSX, an American company founded in 2024 and led by founder Mario Mayerle Filho. TubeLens is not affiliated with YouTube or Google. It presents itself as a second opinion, not a replacement for YouTube, and bases its reading only on what the video says, using public criteria described in its methodology.
The workflow has three steps. You paste any YouTube link, whether long-form, Short or live. TubeLens pulls the full transcript and the AI analyzes it sentence by sentence. You then receive a verdict with a composite score, detected signals and a final seal. Analyses typically take 5 to 15 seconds.
The score covers four dimensions: information density (30%), clarity (30%), credibility (30%) and originality (10%). Alongside it, TubeLens detects up to 28 signals. Each has an intensity from 1 to 5, a timestamp and a justification quoting the excerpt that triggered it, so a reader can check why a video was flagged.
Results are cached globally by video ID, so videos analyzed before respond instantly. Because the analysis depends only on text, a video needs captions, either manual or auto-generated. Without them, TubeLens shows a message instead of an analysis.
Every analysis includes the TLR system. The Lupometer summarizes aggregate quality in four states, from Certified Lens to Red Lens. The Suggested Age tier has five levels derived from 12 content signals such as violence, drugs and predatory monetization. The Editorial Seal reflects sponsorship disclosure, source citation and opinion/fact separation.
The 28 signals include positive patterns such as well-sourced, balanced, didactic, original and transparent, and problem patterns such as pseudo-scientific, conspiracy theorist, sensationalist, clickbait and alarmist. Public rankings group channels by category and use a Bayesian average, so a channel with two perfect videos does not automatically beat one with many strong ones.
Paid tiers add an annotated transcript with an evidence map by timestamp, side-by-side and batch comparison, watchlists with alerts, private analyses, CSV/JSON export, a Chrome extension overlay and a credit-based API.
TubeLens is a web tool that rates YouTube videos on quality instead of popularity. It reads a video's transcript and returns a 0-10 score, detected signals with cited excerpts, and a TLR classification. It is made by INOSX and is not affiliated with YouTube or Google.
It scores the transcript across four dimensions: information density (30%), clarity (30%), credibility (30%) and originality (10%). It also detects up to 28 signals, each with an intensity from 1 to 5 and a transcript excerpt as evidence. No engagement metric enters the score.
Reader is free. Editor is listed at US$ 20 per month or US$ 200 per year. Founding Editor is a US$ 1,000 one-time lifetime payment limited to 200 seats. Editor offers a 7-day full refund and Founding Editor a 14-day full refund.
Yes. The Reader tier is free, needs no credit card, and includes full TLR classification, one new analysis per day, unlimited access to the global cache and a weekly digest. There is no paid trial of Editor.
Not yet. The analysis relies on the text transcript, so the channel must have captions enabled, either manual or YouTube auto-captions. If none are available, TubeLens shows a message instead of producing an analysis.
Typically 5 to 15 seconds after the URL is submitted. Videos already analyzed by any user are cached globally by video ID and return instantly.
TLR gives each video three classifications: the Lupometer (four quality states, from Certified Lens to Red Lens), a Suggested Age tier with five levels, and an Editorial Seal covering disclosure and sourcing standards. TubeLens says it is independent of IARC, the FCC and the FTC.
Yes. TubeLens lists school products: Vetted at $20 per teacher per month, Classroom at $199 per classroom per year, Districts at $1,999 to $9,999 per year, and a Badge at $499 per channel per year. The site says these are on a waitlist.