Research reviewed October 2026. This is a research-based review — we analyzed published specs, pricing, and user feedback.

Sider Review 2026: Multi-Model AI in Your Browser Sidebar

Sider is a multi-model AI sidebar for Chrome and Edge that puts GPT, Claude, Gemini, Grok, and DeepSeek chat next to whatever tab you’re reading — plus a group chat mode that pits models against the same question so you can compare answers on the spot. It bundles reading tools (article summaries, a YouTube summarizer, ChatPDF), writing assistance, and a browser agent called Claw for cross-site automation. The free tier gives 30 basic credits a day; sustained use needs a paid plan.

Bottom line: A strong pick for power researchers who want model comparison without leaving the page. The free tier is enough to evaluate properly; paid tiers make sense once Claw agent features and higher credits matter to your workflow.

Sider’s core value is context carryover: highlight text on any page, ask Sider to summarize or critique it, and continue the conversation without leaving. Sider Chat handles multi-model Q&A with one-click model switching and a group-chat view; Sider Claw is the browser agent layer that opens pages, follows links, and assembles tables or reports across sites using your logged-in sessions; Sider Code persists per-site customizations. The Chrome Web Store listing details a long feature roster: chat with images (vision), PDFs, web pages, multiple tabs, and audio files; article and webpage summarizers; a YouTube summarizer with bilingual subtitles and an AI video shortener; a prompt library; artifacts for documents, websites, and diagrams; real-time web access; and data analysis that produces docs, spreadsheets, and mind maps in chat. Desktop and mobile apps round out the package.

Key features

Multi-model chat: GPT, Claude, Gemini, Grok, DeepSeek, and others in one sidebar with one-click switching.
Group chat comparison: Ask @ChatGPT, @Gemini, @Claude, and others the same question and compare answers live.
Chat with files and tabs: PDFs, images, audio transcripts, single pages, or multiple open tabs as chat context.
Reading assistance: Article and webpage summarizers, YouTube summarizer with highlights and bilingual subtitles.
Writing assistance: Compose, rewrite, translate, and summarize with a reusable prompt library.
Artifacts and analysis: Generate documents, websites, diagrams, spreadsheets, and mind maps inside chat.
Sider Claw agent: Cross-site automation that navigates pages and assembles reports using your signed-in sessions.

Who it’s for

Sider fits researchers who habitually compare model answers, students working across papers and videos, content creators drafting from multiple sources, and anyone doing cross-site research who’d rather automate the tab-hopping. The group-chat comparison mode is the standout for evaluators and the AI-curious. Casual users can stay on the free tier’s daily credits; the paid audience is people running Sider as a daily research cockpit, where Claw automations and higher credit pools justify the subscription.

What to watch out for

Free daily credits run out under sustained use — 30 basic credits a day covers evaluation and light work, not all-day research. The advanced Claw and agent features lean on paid tiers with their own credit limits, and third-party reviewers note the public pricing page doesn’t always list exact monthly credit counts, so verify after signing in. Like all sidebar tools, it requires a Chrome or Edge extension install. And an agent that operates your logged-in sessions (Claw) deserves caution: understand what it can touch before pointing it at sensitive accounts.

Pricing

Free: 30 basic credits per day. Paid tiers (annual pricing, per SaaSworthy September 2026): Starter $4.20/month, Basic $6.70/month, Pro $12.40/month, Unlimited $16.70/month, adding more monthly credits and stronger bundled cloud capacity for agent workloads. Check current pricing on sider.ai — plan details and credit counts are the parts most likely to change.

Pros and cons

Pros

Multiple frontier models plus a group-chat comparison view in one sidebar.
Genuine context carryover — highlight, ask, and continue without leaving the page.
Deep file support: PDFs, images, audio transcripts, and multi-tab chat.
YouTube summarizer with bilingual subtitles and a video-shortening mode.
Claw agent automates cross-site research using your existing logins.

Cons

Free daily credits exhaust quickly under heavy research use.
Advanced Claw/agent features require paid tiers with credit limits.
Exact monthly credit counts aren’t always listed on the public pricing page.
Requires a Chrome or Edge extension install.
Agent access to logged-in sessions needs careful permission review.

Frequently asked questions

Is Sider free?

Yes — the free tier includes 30 basic credits per day across the multi-model chat. Paid plans from $4.20/month (annual billing) add more credits and agent capacity.

Which AI models does Sider support?

The vendor lists GPT, Claude, Gemini, Grok, DeepSeek, and others, with one-click switching and a group-chat mode for comparing answers side by side.

What is Sider Claw?

Claw is Sider’s browser agent: it opens pages, follows links, and assembles tables or reports across sites using your logged-in sessions — a step beyond chat into automation. It leans on paid tiers.

Can Sider summarize YouTube videos?

Yes — the YouTube summarizer produces summaries with highlights, offers bilingual subtitles, and includes an AI video shortener for condensing long videos.

Does Sider work on mobile?

Yes — beyond the Chrome/Edge extension, Sider offers desktop and mobile apps under the same account.