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Glarity vs Sider

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Free plan
Both have one
Best fit
Glarity: Reading long-form content in a second language · Sider: Reading and summarizing long articles or PDFs without leaving the page
Platforms
Glarity: Web, Chrome extension · Sider: Web, Chrome extension, Windows, macOS, iOS, Android
Trust score
About even — Glarity 88, Sider 88
Status
Both up at our last check — Glarity Oct 15, 2026, Sider Oct 14, 2026

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

GlarityBrowser sidebar that summarises video, pages, PDFs and emailSiderBrowser sidebar that puts GPT, Claude, Gemini, and other models next to any page you're reading.

Side by side

FactGlaritySider
CategorySummarizationBrowser Extensions & Copilots
Pricing modelFreemiumFreemium
Starts at$10/mo—
Trust score88 / 10088 / 100
PlatformsWeb, Chrome extensionWeb, Chrome extension, Windows, macOS, iOS, Android
CompanyFelo Inc.Sider
Last verifiedOct 15, 2026Oct 14, 2026

What our research says

Glarity

Solid if you read across languages all day and want summaries where the content already sits, but less compelling now that browsers and several free extensions do the same job. Cross-language reading is where it still earns its keep.

Pros

  • One extension covers YouTube, search, Twitter, Gmail and plain pages
  • Handles far longer inputs than the free tier of a general chatbot
  • Bring-your-own-key option avoids paying a second subscription
  • Available beyond Chrome, including Edge, Safari, Firefox and Opera

Cons

  • The pricing table only renders in JavaScript, so plans are hard to compare before signing up
  • Token metering makes cost unpredictable across long videos
  • No API, so it cannot be wired into a workflow
  • Site copy and footer still carry a 2024 date, which reads stale against the product

Sider

Sider puts a chat panel on top of whatever page you're on, so you can ask about an article or PDF without copying it into a separate tab. The catch is that heavier use beyond the free daily cap needs a paid tier, and pricing quoted across review sites is inconsistent, so the entry price is worth confirming before committing.

Pros

  • Works as a sidebar on any web page rather than a separate chat tab
  • Routes one prompt to several models (GPT, Claude, Gemini, DeepSeek, Grok)
  • Ships native apps for iOS, Android, Windows, and Mac plus browser extensions
  • Can chat with PDFs and YouTube videos, not just plain text

Cons

  • Free tier is capped at a small number of daily uses
  • Independent pricing write-ups disagree on exact plan costs depending on where you check
  • No public API for developers

Which one fits

Choose Glarity if you need

  • Reading long-form content in a second language
  • Skimming hour-long talks on YouTube for the relevant section
  • Triaging PDFs without opening a separate chat tab

Choose Sider if you need

  • Reading and summarizing long articles or PDFs without leaving the page
  • Comparing answers from several models in one panel
  • People who want one subscription instead of several separate chatbot logins

Glarity vs Sider: the questions people ask

Is Glarity cheaper than Sider?

Glarity starts at $10/mo. Sider has a free tier; what its paid plans cost is not confirmed by us yet.

Does Glarity or Sider have a free tier?

Both: Glarity has a free tier, and Sider has a free tier.

More comparisons

All Glarity alternatives →Browse all Summarization →