Glarity
Free browser extension that summarizes YouTube videos, PDFs and webpages and translates them side by side.
Glarity earns its install on the free tier alone: unlimited-duration YouTube summaries with timestamps, side-by-side immersion translation, ~300-page PDF handling and a multi-model chat with image generation, with no ads in the way. The $9.99/mo Plus tier is the honest upsell if you want a floor of 600 GPT-4 queries a month, at least 600 queries vs. a metered free tier, but note the vendor flags it as still in testing and says response speed may drop after the cap. Choose Glarity over ChatGPT for in-browser, unlimited-length summaries and over Google Translate's extension while its whole-page translation is in flux. Skip it if you need a headless API, offline processing or org-level admin.
Verified 5d ago · liveness 70/100 · cite: rightaichoice.com/tools/glarity
- Students and researchers summarizing long lectures, papers and PDFs
- Multilingual readers who want side-by-side translation instead of replaced text
- Professionals needing fast cross-language summaries of news, threads and reports
- Writers and customer-facing teams drafting emails and social replies in the browser
- Developers who need a standalone API or backend service to embed in their own app
- Anyone requiring offline summarization or local-only AI processing
- Enterprises needing SSO, admin controls and multi-seat management
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Skip Glarity if you need a headless API, offline local-only processing, or SSO and admin controls for a multi-seat team — the vendor states accounts are individual use only and multi-user access risks suspension.
Going past the 600 GPT-4 queries included in the $9.99/mo Plus Plan can slow responses and reduce quality — the pricing page warns of this explicitly, so heavy months feel worse than light ones.
Glarity sits at the cheap end of browser AI copilots: the free tier covers unlimited-duration summaries, side-by-side translation and a multi-model chat, and the $9.99/mo Plus Plan with a floor of 600 GPT-4 queries is well under what a general chatbot subscription or a per-seat enterprise reading tool costs. It fits individual readers, students and freelancers; teams needing shared seats and admin controls will need to look at per-seat platforms instead.
In short
Glarity — Free browser extension that summarizes YouTube videos, PDFs and webpages and translates them side by side. Best for Students and researchers summarizing long lectures, papers and PDFs, Multilingual readers who want side-by-side translation instead of replaced text, Professionals needing fast cross-language summaries of news, threads and reports. Free to start; paid plans from $9.99/mo.
What's new in Glarity
Checked 5 days agoAcross the latest 5 updates: 3 feature updates and 2 news mentions.
Glarity compares 10 Google Translate extension alternatives for Chrome
Glarity's blog surveys ten Chrome translation extensions following Google's removal of whole-page translation, positioning its own immersion translation against the field.
Glarity adds MiMo-V2.6-Pro custom model support
A setup guide for connecting Xiaomi's MiMo-V2.6-Pro through the Custom Model setting for omni-modal page and video summarization plus translation.
Glarity adds MiMo-V2.6-Flash custom model support
A companion guide covers the low-cost MiMo-V2.6-Flash, wired into Custom Model for lower-cost translation and summaries.
Glarity: MiMo-V2.6-Pro-UltraSpeed works via Custom Model setting
Glarity documents connecting Xiaomi's MiMo-V2.6-Pro-UltraSpeed through Custom Model for page and YouTube summaries.
Glarity explains why Jev can't be used as a custom model
Glarity clarifies that Jev is a typed-decision engine rather than a chat model, so it cannot be plugged into the Custom Model setting.
What people actually say about Glarity — is it worth it?
We ran a structured research pass across product reviews, community discussions, and post-purchase forum threads to surface the patterns vendors won't publish themselves. Below: the recurring strengths, the hidden costs people mention most, and the cohort that consistently regrets adopting this tool.
7 mentions across 1 source (App Store) · researched Jul 3, 2026.
Average across the 1 source that answered — each source counts once, not each post.
- +Free tier with unlimited YouTube summaries for Chrome users.
- +Works with multiple AI models: ChatGPT, GPT-4o, Claude 3.5, Gemini Pro.
- +Generates timestamped YouTube highlights and FAQ summaries.
- +Immersive side-by-side translation supports up to 10 parallel streams.
- +Very low API cost with GPT-3.5-turbo (~$0.10 per day according to users).
- −Does not work reliably on Safari for Mac or iOS.
- −GPT-4 integration fails on iOS – endless loading loop.
- −Some users wasted API credits due to unresponsive loading.
- −No dedicated mobile app; only browser extension.
- −Positive reviews are mostly Chrome-specific; cross-platform experience is poor.
- • API key usage costs can accumulate if summaries don't complete – you pay for failures.
- • Pro features require a paid API key (e.g., OpenAI) – no flat subscription covers all model costs.
Viability Score
How well maintained and how widely used is Glarity? Built from what the vendor actually publishes (docs, changelog, tutorials, integrations, pricing), whether the site is live, and how much real users discuss it. How we calculate this
Last calculated: October 2026
How we score →Key Features
- Summarize YouTube videos of unlimited duration with timestamped key moments
- Generate FAQs and translate subtitles for YouTube videos
- Ask questions about a YouTube video to extract specific content
- Summarize Google search results and AI search answers
- Summarize news articles, Twitter threads and any webpage
- Summarize and chat with PDFs up to roughly 300 pages via AI Reader
- Side-by-side immersive full-page translation
- Translate selected text in webpages and PDFs
- Translate images within the browser
- Up to 10x parallel translation streams per second (pricing page)
- AI Chat with 10+ models and a 200k context window
- Unlimited image generation inside AI Chat
- Custom Model setting for bringing your own API key, including Xiaomi MiMo-V2.6-Pro and MiMo-V2.6-Flash
- AI writing assistant for articles, emails and social replies
- Gmail quick reply with privacy protection
About Glarity
Glarity is a free, ad-free browser extension from Felo Inc. that turns the page you are already reading into a summarizing, translating and chatting workspace, without sending you to a separate chatbot tab. It installs on Chrome, Edge, Safari, Firefox and Opera and the homepage reports more than 1,000,000 users. The feature set splits into four buckets. Summarization covers YouTube videos of unlimited duration (with timestamped key moments, generated FAQs and subtitles), Google search and AI search, news articles, Twitter threads, PDFs of roughly 300 pages, and any general webpage via custom prompts. Translation is side-by-side and immersive: full-page, selected text in pages and PDFs, and text inside images, with the pricing page claiming up to 10x parallel translation streams per second against ChatGPT's single stream. AI Reader is a reading assistant for PDFs and webpages that summarizes, translates and answers questions with no length limit on the questions. AI Chat sits on the free side with 10+ models, a 200k context window and unlimited image generation. There is also an AI writing assistant for articles, emails and social replies, plus a Gmail quick-reply helper that keeps the reply in the mail client. Model access is deliberately open. The extension ships with GPT-4o, Claude 3.5 Sonnet and Gemini 1.5 Pro, and a Custom Model setting lets you bring your own key — as of late September 2026 Glarity published setup guides for Xiaomi's MiMo-V2.6-Pro and MiMo-V2.6-Flash, including the low-cost MiMo-V2.6-Pro-UltraSpeed variant, for omni-modal page and video summarization and translation. The company positions Glarity less against dedicated summarizers and more against the habit of pasting content into ChatGPT: its comparison table leans on unlimited-length video and page summaries where ChatGPT's default model is bounded, and PDF handling that goes past four pages. Two caveats are worth knowing before you install. The Plus Plan guarantees at least 600 GPT-4 queries per month but the pricing page warns that response speed and quality may drop after you reach that limit, and the vendor states the plan is still in testing. Accounts are also explicitly for individual use: the pricing page says non-human or multi-user access can lead to suspension.
Behind the Verdict
Glarity's real product decision is location. Almost everything it does can be done by pasting text into ChatGPT, and the extension's bet is that you will not do that — you want the summary next to the video, the translation overlaid on the article, the PDF answer inside the reader. That bet holds up in the details: video summaries come with timestamped key moments rather than a wall of prose, translation is side-by-side rather than a replacement page, and Gmail quick replies are composed in the mail client with the vendor claiming full privacy protection for that flow. Strengths. The free tier is unusually complete — unlimited-duration YouTube summaries, news/Twitter/any-page summaries, PDF handling to roughly 300 pages, side-by-side and immersive translation including text in images, AI Chat with 10+ models and a 200k context window, unlimited image generation, and a writing assistant. The Custom Model setting is the standout feature for anyone who already pays a model provider: you plug in your own key. Glarity has kept that door open through 2026, publishing setup guides in late September for Xiaomi's MiMo-V2.6-Pro and MiMo-V2.6-Flash (including the low-cost MiMo-V2.6-Pro-UltraSpeed), which makes the tool feel maintained rather than frozen. The five-browser footprint (Chrome, Edge, Safari, Firefox, Opera) is broader than most competitors manage. Weaknesses. The paid tier is the softest part. Plus is $9.99/mo, guarantees at least 600 GPT-4 queries, and the pricing page itself says response speed and quality may be reduced after the limit — a metered ceiling dressed as a guarantee. The vendor also states the plan is in testing and may evolve, so you are buying an unfinished SKU. Accounts are individual-use only and multi-user access risks suspension, which rules out shared logins for small teams. There is no evidence in what we reviewed of SSO, admin controls or seat management, so treat it as a personal tool rather than a team deployment. Where it fits. Students and researchers who read long PDFs and lecture videos; multilingual readers who want the original visible beside the translation; professionals skimming international news and threads; writers and customer-facing staff drafting replies in Gmail; and tinkerers who want a browser copilot wired to their own model key. Where it does not: developers who need a backend API to embed, anyone with offline or local-only processing requirements, and enterprise buyers whose procurement needs SSO and audit logs.
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Real-world workflow fit
Concrete scenarios for the personas Glarity actually fits — and what changes day-one when you adopt it.
Opens a two-hour recorded lecture on YouTube, runs Glarity's video summary, jumps to the timestamped key moments and asks follow-up questions about the sections that matter.
Outcome: Gets the gist and the timestamps in one pass, then reads only the parts the summary flagged instead of watching end to end.
Loads a Japanese news article in Chrome, turns on side-by-side immersion translation, then uses AI Reader to ask what the piece claims about the specific companies mentioned.
Outcome: Reads the original and the translation in the same view and pulls out the entities without opening a second tab.
Opens a ~300-page PDF in the browser, uses AI Reader to summarize it and generate a FAQ, then asks detailed questions with no question-length cap.
Outcome: Arrives at the meeting with a summary, a FAQ and answers to the specific questions leadership asked, without reading the report cover to cover.
Use Cases
- Summarize a 2-hour lecture video on YouTube with key timestamps
- Translate an entire Japanese news article side-by-side while preserving layout
- Generate a quick FAQ from a dense academic paper PDF to prep for a presentation
- Compose professional email replies in Gmail with context-aware suggestions
- Chat with any webpage to extract specific data without reading the whole page
- Get instant summaries of Twitter threads without scrolling
- Wire your own Xiaomi MiMo-V2.6 key into Custom Model for low-cost translation
- Summarize a Google search results page to triage sources before reading
Models Under the Hood
as of 2026-09-24
Limitations
- The Plus Plan is in testing and may evolve.
- The vendor states it guarantees at least 600 GPT-4 queries per month but that response speed and quality may be reduced after reaching that limit.
- Accounts are intended for individual use only, and non-human or multi-user access may lead to suspension.
- Work happens in the browser, so content you summarize is sent to a cloud model provider unless you supply your own key.
as of 2026-10-03
Verification history
We have re-verified Glarity 8 times since . Each pass re-reads the vendor's own pages and re-checks every listed field against that evidence; passes where nothing had changed are marked as such.
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-checked, vendor evidence unchanged
- — re-checked, vendor evidence unchanged
Showing the 6 most recent of 8 verification passes.
Free to cite with attribution — this page re-verifies continuously.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published Glarity tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Free
$0/mo
Ideal for
Students, researchers and casual readers who want unlimited-duration YouTube and webpage summaries plus side-by-side translation without paying.
What this tier adds
Starting tier, $0/mo — includes summary, translation, AI Reader, AI Chat with 10+ models and Gmail quick reply.
Plus
$9.99/mo
Ideal for
Heavy daily readers who want faster, more reliable model access and a floor of 600 GPT-4 queries a month rather than variable free-tier access.
What this tier adds
Adds at least 600 GPT-4 queries per month, more reliable GPT-4o/Claude 3.5 Sonnet/Gemini 1.5 Pro access, up to 10x parallel translation and no question-length limit.
Where the pricing makes sense
The company stage and team size where Glarity's pricing actually pencils out — and where peers do it cheaper.
Glarity sits at the cheap end of browser AI copilots: the free tier covers unlimited-duration summaries, side-by-side translation and a multi-model chat, and the $9.99/mo Plus Plan with a floor of 600 GPT-4 queries is well under what a general chatbot subscription or a per-seat enterprise reading tool costs. It fits individual readers, students and freelancers; teams needing shared seats and admin controls will need to look at per-seat platforms instead.
Setup time & first value
How long it actually takes to get something useful out of Glarity — broken out by persona, not the marketing-page minute.
Install from the Chrome, Edge, Safari, Firefox or Opera store and you get a summary button on YouTube, search results and any page in under five minutes. Wiring a ChatGPT/OpenAI key for the free tier or a Xiaomi MiMo-V2.6 key through Custom Model takes another five to ten minutes if you already have the key; budgeting a key from scratch adds the provider's own signup time.
Switching to or from Glarity
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From ChatGPT copy-paste: install the extension and summarize the page or video where it lives instead of pasting text into a chat tab.
- →From Google Translate extension: switch on side-by-side immersion translation and keep the source text visible beside the translation.
- →From a PDF summarizer: route long documents into AI Reader, which handles PDFs up to roughly 300 pages.
- →From a paid model subscription: keep your existing key and plug it into Custom Model rather than paying for a second chat subscription.
- ↗To ChatGPT: you lose in-page summarization and unlimited-duration video summaries, and default-model contexts are bounded.
- ↗To Google Translate extension: you gain a familiar translator but lose summaries, AI Chat and PDF reading assistance.
- ↗To a dedicated PDF tool: you keep document chat but lose YouTube, search and webpage summarization in the same extension.
- ↗To a per-seat enterprise reading platform: you gain SSO, admin controls and shared seats that Glarity's individual-use accounts do not offer.
Integrations
Resources & Guides
Tutorials & Learning
YouTube returned 6 videos for “Glarity”, and we withheld 6: 6 could not be judged, because “Glarity” is a single word that other videos use for other things. We are showing none, because we could not prove any of them are about Glarity.
Official links
Tools that pair well with Glarity
Common stack mates teams adopt alongside Glarity, with the specific reason each pairing earns its keep.
Kagi
Kagi is a paid, ad-free private search engine with a private AI assistant grounded in its own results.
Immersive Translate
Free bilingual browser extension that translates webpages, PDFs, ebooks, video subtitles and images side-by-side in 100+ language pairs.
Quillbot
AI paraphrasing tool and writing suite for rewriting, grammar checks, and originality scans.
Featured Head-to-Head Comparisons
Glarity vs Semantic Scholar
Choose Glarity if you need to summarize videos, pages, and PDFs with translation and AI writing help. Pick Semantic Scholar for deep scientific paper discovery and API access. They serve different needs — one is a browser AI assistant, the other a specialized research search engine.
Glarity vs Praktika
Buy Praktika if you're serious about improving spoken fluency in a foreign language via AI conversation practice. Choose Glarity if you need a versatile browser copilot for summarizing and translating web content instantly. They serve entirely different workflows—language learning vs. productivity—so your choice depends on which pain point is more urgent.
Glarity vs Surge Ai
Glarity and Surge AI serve completely different markets. Glarity is ideal for individual users seeking a free, browser-based summarization and translation copilot. Surge AI is a specialized human-feedback platform for training and evaluating frontier AI models, used by leading labs like Microsoft. Choose Glarity for everyday productivity, Surge for advanced AI alignment needs.
Alternatives to Glarity
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Kagi
Kagi is a paid, ad-free private search engine with a private AI assistant grounded in its own results.
Immersive Translate
Free bilingual browser extension that translates webpages, PDFs, ebooks, video subtitles and images side-by-side in 100+ language pairs.
Frequently Asked Questions
Best-of guides
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