Pricing: Free
Verified: Yes
Rating: 4.9/5
Chrome extension sidebar AI - free access to GPT-4o/Claude 3.5/Gemini on any webpage. Summarize/translate/write without tab switching. 2M+ Chrome Web Store users.
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Category
Extensions ChatGPT
Editor-selected listing
Verified by our team
Independent & reader-supported
Pricing
100% FREE UNLIMITED - GPT-4o/Claude 3.5/Gemini no limits
What is Sider?
Sider Chrome extension (2M+ users on the Chrome Web Store) delivers instant AI access beside any webpage - summarize 10K word articles to bullet points, translate pages, generate content, answer questions about current page without tab switching.
Free tier includes GPT-4o, Claude 3.5 Sonnet, and Gemini 1.5 Pro access (daily limits apply). YouTube video summarization, PDF analysis, image description, code explanation, research assistance.
Perfect researchers, students, marketers, developers - ChatGPT/Claude power directly on Wikipedia/PDFs/YouTube/articles instantly. Find alternatives.
Associated Tags
sider ai chrome free 2026, chatgpt sidebar extension, claude 3.5 browser ai, youtube summarizer chrome, pdf ai reader extension, webpage translator ai, free gpt4o chrome, sider vs merlin ai
Key Features
2M+ Chrome users worldwide
GPT-4o/Claude 3.5/Gemini FREE
Sidebar AI - no tab switching
YouTube/PDF/image analysis
10K word article summarization
Instant webpage translation
Code explanation/research
Mobile Chrome compatible
Privacy-first no tracking
Real Use Cases
How professionals leverage Sider AI - FREE Chrome ChatGPT/Claude Sidebar 2M+ Users
Discover practical workflows and real-world scenarios where Sider delivers key solutions.
01
Summarise or critique research papers and articles while reading them in the browser tab
02
Access AI writing assistance inside Google Docs or email without opening a separate AI tab
03
Switch between GPT-4o, Claude, and Gemini for different task types without managing multiple accounts
Editor's Verdict
Official ReviewSider is the most capable AI sidebar for users who work across many websites: it attaches GPT-4o, Claude 3.5, and Gemini to your active browser tab without context-switching. The core value is context carryover — you can highlight text on any page, ask Sider to summarise or critique it, and continue the conversation without leaving. The free tier is functional for light use; paid plans unlock higher message volumes and extended model access. For heavy-research workflows it replaces four separate AI tabs with one sidebar, which is a genuine productivity gain for daily power users.
4.9 / 5.0
Editor RatingReviewed by Sohail Akhtar
Lead Editor & Founder
Pros
What we like
- Access GPT-4o, Claude 3.5, and Gemini from a single browser sidebar without switching between AI tabs
- Context-aware assistance: highlight any web page text and immediately ask AI questions about it
- Free tier gives meaningful daily access across multiple models before hitting rate limits
Cons
Limitations
- Free daily message limits are restrictive for all-day heavy research or writing workflows
- Model access is routed through Sider's API — no direct provider fine-tuning or custom system prompts
- Sidebar UI adds visual clutter for users who prefer minimal browser environments
Top Alternatives
Dedicated alternatives page →
Free
GPTZero
Detect AI-generated text in documents and submissions with sentence-level analysis and detailed probability reports.
Free
Claude for Chrome
Claude for Chrome automates web tasks, summarizes pages, drafts emails, manages calendar directly.
Free
Merlin
Merlin brings ChatGPT, GPT-4, Claude, Llama to websites for email writing, summarization, coding.
Frequently Asked Questions
Sider AI Chrome - actually unlimited free?
YES - unlimited GPT-4o/Claude 3.5/Gemini usage. No paywalls, no daily limits, no premium tiers.
Which AI models available in Sider?
GPT-4o, Claude 3.5 Sonnet, Gemini 1.5 Pro, GPT-4o mini - instant model switching from sidebar.
Does Sider summarize YouTube videos?
Perfect YouTube summarization - extracts key points, timestamps, creates study notes instantly.
Sider vs Merlin AI - key differences?
Sider = FREE unlimited top models. Merlin = limited free tier, paid premium features.
Works on mobile Chrome browser?
Yes, full mobile Chrome support - AI sidebar works perfectly on Android/iOS browsers.