Sider Review 2026: Is the AI Browser Sidebar Worth Paying For?

Sider is a browser extension that docks an AI chat panel next to whatever page you have open, so you can summarize, translate or question that page without pasting text into another tab. This Sider review is a desk review: Simple Life Reviews has not paid for an account, so what follows pulls together six independent write-ups, Sider's own pricing and help pages, and the complaints those reviewers surfaced. Sider's plans and pricing page claims 10M+ active users and 100K+ five-star ratings, though independent checks of the Chrome Web Store listing have turned up lower user counts, so treat those claims as marketing.

The short verdict

Sider earns its place if you spend the workday in a browser and keep switching between ChatGPT, Claude and Gemini: one panel, one bill, and a habit of highlighting text instead of copying it somewhere else. It is a weaker buy for people who are loyal to a single model, people handling confidential client data, and anyone who dislikes metered credits, because even the top tiers ration premium models more tightly than their names suggest. Start on the free plan, watch how fast the daily allowance runs out, and pay only after that.

What is Sider AI?

Sider began as a "ChatGPT Sidebar" extension and has since grown into a small suite. The chatai.guide review points out that a separate cloudHQ product also uses the ChatGPT Sidebar name, so check the publisher in the Chrome Web Store before you install anything. Beyond Chrome and Edge, there are companion apps for Windows, macOS, iOS and Android, and your chats follow you between them.

Sider's own site now splits the product into five areas, and knowing them helps you judge whether you would use enough of it to pay:

• Chat: talk to GPT, Claude, Gemini, Grok and other models, get summaries of long articles, and translate webpages, PDFs and images.
• Hand: browser automation that compares prices while you shop, fills in forms, researches across several sites and sorts a Gmail inbox. It was called "Claw" until a recent rename.
• Code: change how a site looks or behaves, or add AI features to a page you visit. Despite the name, it is a page-customization tool rather than a coding environment.
• Create: images, video and slides, built on models that Sider's pricing page lists as GPT Image 2 High, Nano Banana Pro and Seedance 2.5.
• Wisebase: a personal knowledge base where saved research, notes and documents pile up over time.

That breadth cuts both ways: if all you want is a chat window, most of the suite will sit unused.

Key features reviewers actually use

Highlight-to-ask and group chat

The feature most reviewers lean on is the simplest one. Select a sentence or a paragraph on any page, and a small Sider menu offers to explain, translate, summarize or rewrite it right there. Roborhythms' reviewer, who used Sider over several months, describes it as the habit that removed the most interruptions from a workday.

Group chat sends one prompt to several models at once and lines up the answers. Roborhythms credits it with cutting a model-comparison job from 20 minutes to 3. AionX treats it as Sider's defining feature, and it is the main reason to pick Sider over a single native app. Sider advertises 20+ models, including GPT, Claude, Gemini and DeepSeek, per AionX, although the free and entry tiers lean on lighter models.

YouTube, PDF and page summaries

Open a YouTube video and Sider produces a timestamped summary, handy for deciding whether a long tutorial deserves your time. Sider's help center says this works even on videos without subtitles.

Translation

Translation gets some of the warmest comments. AITrendTool lists support for 50+ languages with a side-by-side bilingual view, and AionX notes that several independent reviews rank the translation above the chat itself.

Deep Research and Wisebase

The Deep Research agent reads through 100+ sources and returns a cited, visual report that can be saved to Wisebase, as the Product Hunt listing describes it. Roborhythms found the output good but slow. It is also the most expensive thing you can do in Sider: chatai.guide reports that a Deep Research run from Chat costs 20 Elite credits per topic, a beta report costs 10 Elite credits, and an interactive visualization adds 6 Advanced credits.

Pricing and the credit system

Here is the awkward part of any Sider review. Sider's pricing page lists features and FAQ questions but no dollar amounts in plain text, and both chatai.guide and Prompt Architects ran into the same wall. The figures below are therefore third-party snapshots, and they disagree with each other. Check the live page while signed in before you pay.

AITrendTool's snapshot is noticeably pricier at the top, with Pro near $20 a month and Unlimited around $25 (AITrendTool). Roborhythms' numbers are annual-billing prices, and that reviewer warns that paying month to month costs more (Roborhythms). Your real price depends on billing cycle and promotions.

Credits come in three kinds. Basic Credits cover lighter models, Advanced Credits cover premium models such as the top Claude and GPT versions, and Elite Credits pay for agent features like Deep Research. Even the "Unlimited" plan meters premium models, and Sider warns that answer quality can drop once those credits are used up, so read "unlimited" as unlimited basic models only.

Unused credits also expire at the end of each month, which Roborhythms calls built-in waste for anyone whose usage swings.

Is Sider safe to use?

A browser assistant sits close to everything you read and type, which deserves a moment of thought. The chatai.guide review points out that Sider's privacy policy gathers account details and usage data, standard practice for cloud AI tools, and suggests treating the extension as a convenience rather than a safe place for confidential material.

Sider's General Issue FAQ adds a few details that privacy-minded readers should know:

• Chat history syncs across your devices automatically, and you cannot switch that off.
• Uninstalling the extension erases your history permanently, and there is no built-in way to move it to a new computer.
• Accounts do not support passwords; you sign in with Google instead.
• You cannot see which devices are connected to your account from the app or the extension.

Together, those points argue for keeping legal, medical, HR and customer data out of the sidebar.

Does Sider work on every website?

Mostly. The same help page admits the right-click menu sometimes fails on particular sites because of compatibility issues or browser restrictions, and one early Product Hunt reviewer suspected clashes with other extensions. For answers that degrade over a long conversation, Sider's advice is to start a fresh chat.

Pros and cons

Pros

• One sidebar reaches GPT, Claude, Gemini, Grok and DeepSeek, so you stop juggling tabs and logins.
• Highlight-to-ask and group chat save real time for people who compare model answers.
• Translation and YouTube summaries are the features reviewers praise most consistently.
• Entry pricing undercuts a single native AI subscription, and the free plan needs no card.

Cons

• The credit system is confusing, and premium models are rationed even on the priciest plan.
• Credits expire each month instead of rolling over.
• Pricing is not printed on Sider's own page, and third-party snapshots disagree.
• Refund requests can be refused, as one Product Hunt buyer found.
• History sync cannot be disabled, and uninstalling wipes your chats.

What owners complain about

The community picture is positive but not uncritical. The Product Hunt page shows a 4.4 average from 25 reviews, and its AI summary lists the recurring gripes: credit and model limits that feel tight, unclear usage rules, occasional weak answers, and pricing or refund frustration. The sharpest story comes from a buyer who paid for a month of an "unlimited" plan to use Claude Opus 4 with thinking, found it needed 20 advanced credits per use, was limited to one use a day, and was refused a refund after four days of email.

Happier reviewers use Sider daily for grammar fixes, email replies and plain-English explanations of jargon, and one picked it over Monica and Merlin for its model range and Wisebase.

Who should use Sider, and who should skip it

Sider fits a few kinds of people well:

• Students and researchers condensing papers, articles and lectures into cited briefs.
• People working across languages, who read sources in one language and answer in another.
• Knowledge workers already paying for more than one chatbot who want a single login and bill.
• Writers and marketers who draft and rewrite inside the page in front of them.

Skip it if you use one model heavily all day, since a native subscription gives you that model's full feature set with predictable limits. Skip it, too, if your work involves sensitive data or your company blocks unsanctioned extensions.

Sider alternatives

Monica is the obvious head-to-head pick, and the choice mostly comes down to Sider's credit-metered flexibility against Monica's flatter limits. Paying a model maker directly makes more sense when you live inside one assistant and want its newest tools first; AionX frames Sider as an access layer, not a replacement for those apps.

Is Sider worth it?

For the right person, yes. If you compare models often, translate pages regularly or summarize long videos and PDFs, the low entry price buys real time savings, and Roborhythms judged even the Pro tier to cost less than one native AI subscription. If you mostly want unlimited access to the strongest models, Sider's caps and no-refund stories argue for paying the model maker directly instead. The free plan is generous enough to find out which group you belong to.

Our ratings

Overall: 3.5/5, because Sider bundles a wide, genuinely useful toolkit at a low entry price, but its premium-model caps, unrolled credits, refund complaints and hidden pricing hold it back, as reviews from Roborhythms and Product Hunt show.

Sider AI

Sider AI: 3.5/5. The extension does the everyday jobs well, with highlight-to-ask, translation and summaries winning praise in AionX's review, yet heavy users of premium models will hit limits that the plan names do not prepare them for.

FAQ

What is Sider AI?

Sider is a browser extension, with desktop and mobile apps, that opens an AI sidebar on any webpage. It bundles chat with many AI models, page and video summaries, translation, browser automation, page customization, image and slide creation, and a personal knowledge base called Wisebase.

Is Sider free to use?

Yes, there is a permanent free plan with no card required. It gives 30 Basic Credits a day on standard models, per AITrendTool, which is enough to judge the sidebar but not enough for heavy daily use.

How much does Sider cost?

Sider's own page does not print prices in text, and third-party snapshots differ. Roborhythms lists $4.20, $12.40 and $16.70 per month on annual billing for Starter, Pro and Unlimited. Other snapshots run higher, so confirm on the live pricing page before paying.

Which AI models does Sider support?

Sider's pricing page names GPT, Claude, Gemini and Grok for chat, and reviewers add DeepSeek and Llama to the list. Which models you can use, and how often, depends on your plan's Basic, Advanced and Elite credits.

Is Sider safe to use?

It is a mainstream extension, but it can see the pages you browse, and its privacy policy covers account and usage data. Chat history syncs across devices with no off switch, so keep confidential work out of it and check your employer's extension policy first.

What is Sider Code?

Code is the part of Sider that customizes webpages. You can change how a site looks or works, or add AI features to a page, without writing the code yourself. It is not a developer IDE.

Does Sider work on all websites?

It works on most pages, but Sider's help center admits the right-click menu can fail on some sites. You can hide the quick action bar on any site where it gets in the way.

Is Sider worth it?

Yes, if you switch between several AI models, translate often or summarize a lot of reading. Single-model power users will get more from a native subscription.