Glarity
Free AI browser extension for summarizing and translating any webpage
Glarity's free tier is genuinely useful—unlimited summaries and translations with no ads, plus a multi-model chat that includes image generation. The Plus plan is a budget-friendly upgrade for power users, even while still in testing. If you're a student, researcher, or multilingual reader, this extension is a smart download; enterprise users will want to look elsewhere.
Verified 5d ago · liveness 57/100 · cite: rightaichoice.com/tools/glarity
- Students and researchers summarizing long videos and papers
- Professionals needing fast cross-language summaries and translations
- Content creators repurposing video and web content
- Multilingual users who want side-by-side translation
- Developers needing a standalone API or backend service
- Users requiring offline summarization without internet
- Enterprises needing advanced admin controls and SSO
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Skip Glarity if you need offline summarization, a standalone API for backend use, or enterprise-grade admin controls and SSO—this is a free browser extension that leans on third-party AI APIs.
The free tier requires your own ChatGPT/OpenAI API key, which incurs usage costs beyond the free tier's included features.
Glarity's free tier is more generous than ChatGPT's free tier, offering unlimited-length summaries and up to 10x translation streams. The $9.99/mo Plus plan is cheaper than ChatGPT Plus ($20/mo), but it's still in testing. For budget-conscious users, Glarity's free tier is hard to beat; power users may find the Plus plan worthwhile despite its evolving status.
In short
Glarity — Free AI browser extension for summarizing and translating any webpage. Best for Students and researchers summarizing long videos and papers, Professionals needing fast cross-language summaries and translations, Content creators repurposing video and web content. Free to start; paid plans from $9.99/mo.
What's new in Glarity
Checked todayAcross the latest 4 updates: 1 feature update, 1 changelog entry and 2 news mentions.
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What is Glarity? Features, Numbers, and What's New
Glarity is a free, ad-free browser extension that summarizes YouTube videos, web pages, and PDFs, translates side-by-side, and adds AI chat. Updated August 2026.
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AI search engines run a four-stage pipeline: indexing, retrieval, ranking, and generation. Google, Bing, Perplexity, and ChatGPT differ in how they build answers.
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.
- +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: August 2026
How we score →Key Features
- Summarize YouTube videos with timestamped highlights
- Generate FAQs for YouTube videos
- Create and translate YouTube subtitles
- Summarize Google search results with AI search
- Summarize any webpage with custom prompts
- Chat with PDF content via AI Reader
- Interactive Q&A on pdfs and webpages
- Side-by-side immersive webpage translation
- Translate selected text on webpages and PDFs
- Translate images within the browser
- AI writing assistant for emails and social media
- AI Chat with 200k context window and 10+ models
- Unlimited image generation in AI Chat
- Voice translation with real-time voice input
- Gmail quick reply assistant
About Glarity
Glarity is a free, open-source browser extension that functions as an AI copilot for cross-language reading and writing. It summarizes YouTube videos, Google search results, web pages, PDFs, and Twitter threads directly in your browser using models like GPT-4o, Claude 3.5 Sonnet, and Gemini 1.5 Pro. It also provides immersive real-time translation, AI writing assistance, and an AI Chat with a 200k context window and unlimited image generation. Designed for students, researchers, and professionals, Glarity eliminates manual effort by generating timestamped video highlights, FAQs, and subtitles, and supports custom prompts for tailored content extraction. Unlike ChatGPT's gated token limits, Glarity's membership plans (including a free tier) offer unlimited-length summaries for YouTube and special websites, side-by-side translation at up to 10x parallel streams, and PDF support of up to ~300 pages. With over 1 million users across Chrome, Edge, Safari, Firefox, and Opera, Glarity integrates seamlessly into daily browsing. The extension can work with your own API key or Glarity's cloud service, and its source code is available on GitHub. Recent updates have added voice translation, enabling real-time voice input for translation, and an AI Reader for interactive chat with PDF and webpage content. Glarity positions itself as a more capable alternative to ChatGPT for in-browser summarization and translation, offering a free tier that competes strongly with paid services. It's ideal for anyone who wants a single, ad-free tool to handle reading and writing tasks across languages and media types.
Behind the Verdict
Glarity is a browser extension that packs a surprising amount of utility into a free tier. For anyone who regularly reads long YouTube videos, academic papers, or foreign-language webpages, the ability to get timestamped summaries, side-by-side translations, and PDF chat without paying is a strong draw. Strengths: - Free tier includes unlimited summaries for YouTube and special websites, up to 300-page PDFs, and 10x parallel translation streams—generous compared to ChatGPT's token-limited free version. - Multi-model AI Chat (10+ models, 200k context, unlimited image generation) is a standout, though it may rely on third-party APIs. - Open-source with a GitHub repo, which appeals to privacy-conscious users. - Recent additions like voice translation and AI Reader expand its use cases. Weaknesses: - The Plus plan is only in testing, so features and pricing may change. - It's a browser extension, not a standalone API, so developers needing backend integration will be disappointed. - The free tier requires you to bring your own ChatGPT/OpenAI API key, which may be a barrier for non-technical users. - No mobile app or desktop version beyond the browser extensions. Where it fits: - Students and researchers who need to digest long videos and papers quickly. - Multilingual users who want real-time translation without context switching. - Content creators repurposing video and web content. Where it doesn't: - Developers needing a robust API or self-hosted solution. - Enterprises that require SSO, admin controls, and compliance features. - Users who demand offline functionality or local AI processing.
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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.
Needs to summarize a 2-hour lecture video and a 50-page PDF for exam prep.
Outcome: Glarity generates timestamped highlights for the video and an AI Reader session for the PDF, saving hours of note-taking.
Wants to repurpose a YouTube video into a blog post and translate it into multiple languages.
Outcome: Uses Glarity's summarization to draft the post, then side-by-side translation to produce localized versions.
Needs to quickly understand a foreign-language article and respond to emails in Gmail.
Outcome: Glarity translates the article in-place and provides AI-assisted email replies, boosting productivity.
Use Cases
- Summarize a 2-hour lecture video on YouTube in under 30 seconds with key timestamps.
- Translate an entire Japanese news article into English 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 AI suggestions based on context.
- Chat with any webpage content to extract specific data without reading the whole page.
- Get instant summaries of Twitter threads and discussions without scrolling.
Models Under the Hood
as of 2026-08-19
Limitations
- Glarity's Plus Plan is in testing and may evolve; the free tier requires a ChatGPT/OpenAI key.
- The pricing page notes that the Plus plan guarantees at least 600 GPT-4 queries per month but may reduce response speed after reaching the limit.
- Accounts are intended for individual use only, and non-human or multi-user access may lead to suspension.
as of 2026-08-18
Verification history
We have re-verified Glarity 5 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-checked, vendor evidence unchanged
- — re-checked, vendor evidence unchanged
- — 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
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
Solo users, students, or researchers who need unlimited summaries for YouTube and webpages without paying, and are okay bringing their own API key.
What this tier adds
Starting tier: offers unlimited summaries for YouTube and special websites, side-by-side translation with 10x parallel streams, and PDF summary up to ~300 pages.
Plus
$9.99/mo
Ideal for
Heavy users who need priority access to advanced features and at least 600 GPT-4 queries per month, and can tolerate the plan being in testing.
What this tier adds
Adds at least 600 GPT-4 queries per month, unlimited-length summaries, and priority access to advanced features—currently in testing phase.
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's free tier is more generous than ChatGPT's free tier, offering unlimited-length summaries and up to 10x translation streams. The $9.99/mo Plus plan is cheaper than ChatGPT Plus ($20/mo), but it's still in testing. For budget-conscious users, Glarity's free tier is hard to beat; power users may find the Plus plan worthwhile despite its evolving status.
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 the extension from your browser's store and add your OpenAI API key (or use cloud service) within minutes. You can start summarizing YouTube videos immediately; translation and AI chat are available after a quick permissions grant.
Integrations
Resources & Guides
Tutorials & Learning
Official links
Tools that pair well with Glarity
Common stack mates teams adopt alongside Glarity, with the specific reason each pairing earns its keep.
Featured Head-to-Head Comparisons
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.
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 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.
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