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Sider

Pricing: Free

Verified: Yes

Editor rating: 4.9/5

Updated: July 2026

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.

Editor's take: “Industry-defining LLM, unmatched versatility and ecosystem” — Sohail Akhtar

Free tier (verified July 2026): Multi-model chat (GPT-4o, Claude, Gemini) — catch: daily credit allowance

Top Alternatives

Editor's Verdict

Official Review

Sider 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 Rating

Reviewed 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

Pricing

✓ Free tier re-verified July 2026: Multi-model chat (GPT-4o, Claude, Gemini) — daily credit allowance

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.

Summarise or critique research papers and articles while reading them in the browser tab

Access AI writing assistance inside Google Docs or email without opening a separate AI tab

Switch between GPT-4o, Claude, and Gemini for different task types without managing multiple accounts

Top Alternatives

Dedicated alternatives page →

Free

Merlin

Merlin brings ChatGPT, GPT-4, Claude, Llama to websites for email writing, summarization, coding.

#Extensions Chatgpt #Productivity

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Freemium

Monica AI

All-in-one AI assistant with GPT-5.2, Claude, and Gemini — browser extension, desktop, and mobile app.

#AI Assistant #AI Chat and Assistant+2

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Free

Claude for Chrome

Claude for Chrome automates web tasks, summarizes pages, drafts emails, manages calendar directly.

#Extensions Chatgpt #Future Tools

View Details

Freemium

Poe

Quora Poe = GPT-4/Claude/Gemini all-in-one. FREE daily limits + $19.99/mo unlimited + create custom bots.

#AI Chat and Assistant #Chatbots+2

View Details

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.