Sider Review Review
Rated 4.6/5 on Chrome Web Store — 2M+ users worldwide
Sider Review
Rated 4.6/5 on Chrome Web Store — 2M+ users worldwide
Sider Overview
Sider is a multi-model AI sidebar extension for Chrome, Edge, Safari and Firefox that brings GPT-4, Claude 3.5, Gemini and DALL·E into a single pane next to any webpage. With Sider open you can summarize the page you are reading, ask follow-up questions about a PDF, rewrite or translate selected text, generate images, extract text from screenshots, summarize YouTube videos, and chat with linked documents — all without switching tabs. Used by 2M+ users worldwide, Sider also bundles a desktop app and mobile companion so your AI chat history follows you across devices.
Sider Features – What You Get?
Sider is the all-in-one browser AI assistant — chat with top LLMs, summarize pages, generate images, and compare model responses without leaving the page.
- Sidebar chat in every webpage.
- Page + PDF summarization.
- ChatPDF mode.
- Image generation + editing.
- Custom AI personas.
- Web search with citations.
- Multi-model side-by-side.
- Cross-browser + mobile sync.
Top Sider Services
Multi-Model AI Chat — GPT-4, Claude 3.5, Gemini Pro in one sidebar
Chat with PDFs & Documents — Summarize, query, and extract data from any file
YouTube & Video Summaries — One-click summaries of long videos with timestamps
Painter Image Generator — DALL·E 3 and Stable Diffusion XL inside the sidebar
Web Page Reader & Summarizer — Instant TL;DR for articles and web pages
AI Translator — 50+ languages with context-aware translation
Cross-Browser Support — Chrome, Edge, Safari, Firefox extensions
Mobile Companion App — iOS and Android with chat history sync
Sider is a multi-model AI sidebar extension that bundles top AI models, document chat, image generation, and translation into a single browser interface. Rather than juggling subscriptions to ChatGPT, Claude, and Gemini separately, Sider lets users switch models on the fly. Below are the key services Sider delivers.
Sider Pricing Plans
Sider offers a generous free plan and three paid tiers with model access scaling per tier. Annual billing is significantly discounted vs. monthly.
| Plan | Price (monthly) | Best For |
|---|---|---|
| Free | $0 | Daily quota for basic summarization and quick tasks |
| Basic | $10 / month | Light users wanting GPT, Claude, and Gemini access |
| Plus | $40 / month | Power users wanting unlimited credits, deep research, and image/video generation |
| Ultra | $200 / month | Heavy users and pros needing the highest credit allocation and priority access |
Pros and Cons of Sider
Pros
- Access to GPT-4o, Claude 3.5, Gemini, DeepSeek in one subscription
- Free plan is genuinely useful (not a 7-day trial)
- Cross-browser support — Chrome, Edge, Brave, Firefox
- Mobile apps with chat sync
- Cheaper than buying ChatGPT Plus + Claude Pro separately
- ChatPDF and image generation built-in
Cons
- Free plan limited to GPT-3.5 with daily caps
- Some advanced features locked behind Pro tier
- Token quotas can deplete during heavy research days
- UI can feel busy with so many features in a small sidebar
On the Chrome Web Store (4.7+/5) with millions of installs, users praise the multi-LLM access and the sidebar UX. Critiques typically involve free-tier quotas and occasional sluggish responses during peak hours.
What real users say
Researcher · PhD candidate • May 2026
Sider lets me ask Claude 3.5 about a paper, then GPT-4 about another, in the same sidebar. The PDF chat handles my 200-page research papers without choking. Pro annual at $149 is half what I would pay for ChatGPT Plus + Claude Pro separately.
Content Creator · Newsletter writer • April 2026
I use Sider mainly for YouTube summaries and rewriting newsletter drafts. The 5-summaries-total cap on free was annoying, so I upgraded to Basic. Worth every penny — saves me 3 hours a week of skimming long-form video research.
Product Manager · B2B SaaS • March 2026
The image generator (Painter) plus chat-with-PDF combo is what sold me. I drop in a competitor whitepaper, ask Claude to extract their pricing model, then have DALL·E mock up a one-pager — all from one sidebar. Insane productivity boost.
Top Sider Alternatives
Looking at alternatives to Sider? The leading browser AI assistants and sidebar tools are:
Merlin AI — Chrome AI sidebar with multi-LLM.
MaxAI — productivity-focused Chrome AI sidebar.
Monica — popular AI Chrome companion.
HARPA AI — AI agent + sidebar.
ChatGPT — direct OpenAI chat (no sidebar).
Perplexity — AI search engine with citations.
Sider Frequently Asked Questions
What is Sider AI?+
Sider is a multi-model AI sidebar extension for Chrome, Edge, Safari and Firefox that combines GPT-4, Claude 3.5, Gemini and DALL·E in one pane. It can summarize pages, rewrite text, chat with PDFs, generate images and translate — all without leaving your current tab.
How much does Sider cost?+
Sider has 4 paid plans (billed annually): Starter $4.20/mo, Basic $6.70/mo, Pro $12.40/mo, Unlimited $16.70/mo. Monthly billing is roughly 30-50% more expensive. A free plan with 30 Basic Credits/day is available indefinitely.
Is Sider free?+
Yes — the free plan gives you 30 Basic Credits per day plus limited access to YouTube summary (5 total), AI text extraction (10 total), Painter image generator (10 total) and PDF chat (10 total, max 200 pages per PDF). No credit card required.
Which AI models does Sider use?+
Sider bundles GPT-4 (OpenAI), Claude 3.5 Sonnet (Anthropic), Gemini Pro (Google) and DALL·E (image generation) in one interface. You can switch models per-conversation depending on which gives the best output.
Does Sider work on mobile?+
Yes — Sider offers a mobile companion app for iOS and Android that syncs your chat history and document library across devices. You can also use the web app at sider.ai outside of the browser extension.
Is Sider better than ChatGPT Plus?+
For $16.70/month Sider Unlimited gives you access to GPT-4 + Claude + Gemini, whereas ChatGPT Plus at $20/month only includes OpenAI models. If you need multiple model perspectives or use cases beyond chat, Sider is better value.
Can Sider chat with PDFs and documents?+
Yes — upload a PDF, Word doc, or paste a URL and Sider will summarize, answer questions, and extract data using any of its connected models. The Pro plan supports up to 100-page PDFs; Unlimited handles 500+ page documents and bulk document chat.
What is Sider Painter?+
Painter is Sider’s built-in image generation tool, powered by DALL·E 3 and Stable Diffusion XL. It produces images directly inside the sidebar with prompt history, style presets, and edit/upscale tools. Free users get 5 generations total; Pro gets 100/day; Unlimited gets unlimited generations.
Is my data private with Sider?+
Sider does not train its models on your chat data and offers an incognito mode that disables history. Conversations are encrypted in transit and stored on Sider’s servers tied to your account. For sensitive use, paid plans add SOC 2 Type II compliance and a no-logs option.
Who should use Sider?+
Sider fits researchers, content creators, and knowledge workers who want one subscription covering GPT-4, Claude, Gemini, and DALL·E instead of paying for ChatGPT Plus + Claude Pro + Gemini Advanced separately. It is also useful for cross-browser users who do not want to be locked into one AI vendor.
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