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Reviewed · Updated 2026-06-19

Sider.ai

An AI assistant embedded in your browser, offering real-time assistance across various tasks.

Reviewed by the Conversion Gems editorial team ·
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Pricing
Free Trial
Best for
Sider.ai is designed for professionals, students, researchers, and anyone seeking to enhance their web browsing experience with intelligent assistance
Category
Chrome Extensions & Browser Tools
The bottom line

The most affordable way to access 20+ top AI models from your browser, with a usable free tier and paid plans well under $20/month.

7.6
Our score
7.6 / 10
Conversion Gems editorial verdict
Free tier; from $4.20/mo (billed annually)
Features8/10
8 - breadth is exceptional (20+ models, deep research, PDF/YouTube chat, image gen, translation, Wisebase); minor gaps in export flexibility and organization.
Value8/10
8 - $4–17/mo for 20+ frontier models is hard to beat; free tier is genuinely functional at 30 credits/day.
Ease of use8/10
8 - browser extension install is frictionless; sidebar UI is intuitive; slight learning curve for credit system and model selection.
Ecosystem7/10
7 - strong model roster (GPT-4o, Claude 3.5 Sonnet, Gemini, Llama 3.1); browser-native context awareness; limited API/automation integrations.
Support5/10
5 - multiple user reports of slow paid-tier support response times; community resources exist but direct support underwhelms.

Community ratings

2.9/ 5 aggregate · across 1 source
Trustpilot
2.915+ reviews

Third-party ratings shown verbatim; aggregate weighted by review volume.

What it really is

Sider.ai — AI browser sidebar giving access to 20+ models for chat, research, summarization, and writing.

Our take

Sider is a freemium browser extension that embeds a multi-model AI panel directly into your browser, letting you query GPT-4o, Claude, Gemini, Llama, and 20+ other models side-by-side without switching tabs. The DB lists it as 'Free Trial' with no entry price, but the product has a permanent free tier (30 basic credits/day) and paid plans starting from ~$4.20/month on annual billing — making it a true freemium product, not a trial-only offering. Standout capabilities include Group AI Chat (compare model responses simultaneously), a deep-research agent with citations, YouTube/PDF summarization, and a personal knowledge base called Wisebase.

Why we rate it

Sider delivers remarkable value by consolidating 20+ frontier models into a single $4–17/mo browser extension — far cheaper than maintaining individual subscriptions to ChatGPT Plus, Claude Pro, and Gemini Advanced separately.

The catch

Credit allocations don't roll over monthly, 'Unlimited' plans still carry caps on advanced models, research exports are HTML-only, and paid-tier support response times draw consistent criticism.

Best for
Researchers and students who need deep, cited web research without tab-switching
Power users wanting side-by-side comparison of multiple AI models per query
Budget-conscious professionals seeking GPT-4o + Claude + Gemini access under $17/mo
Not good for
Users needing offline or native-app AI outside the browser
Teams requiring collaborative workspaces or conversation organization (no folders)
Heavy API-level automations or workflow integrations beyond browser context
Friction report
Time to value
Fast: install browser extension, sign up, and start chatting with AI models within minutes.
Scale breakpoint
Credit caps become a friction point for heavy daily users on lower plans; 'Unlimited' tiers still impose monthly maximums on advanced models.
Walled garden
Moderate: knowledge base (Wisebase) and research reports are stored in-platform; exports limited to HTML, complicating data portability.

A look inside

Sider.ai product screenshot

Frequently Asked Questions

Alternatives

Step up

Perplexity Pro for deeper AI-native search with citations, or individual ChatGPT/Claude plans for dedicated model depth.

Lighter alternative

Browser built-in AI features (e.g., Arc's AI sidebar or Edge Copilot) for zero-cost casual browsing assistance.

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Tags

#ChatGPTExtension#AIProductivity#WritingAssistant

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