A Chrome sidebar for chatting with GPT, Claude, Gemini and other models on any webpage, and for summarising, translating and writing without switching tabs. Free daily credits; paid plans add more.
How we checked: read directly from the vendor's own pricing page — source
Re-read 25 September 2026. Sider sells paid plans by credit allowance, so the 'unlimited, no paywalls, no daily limits' answer one of our FAQs still carried was wrong. It had survived a 6 September correction that fixed a different FAQ.
What
What we found
Status
'FREE unlimited top models'
WithdrawnOur own pricing field says sustained use exhausts Sider's daily credits. The same page asserted both.
Changed since last check
Claim about Merlin's free tier
Removed — never verifiedThe answer read 'Merlin = limited free tier, paid premium features'. We had not checked Merlin's limits. This is the same class of error as telling readers Linktree's free plan capped links at five, which proved false — an unchecked claim about a competitor is the hardest kind to justify.
Changed since last check
Plans
Paid plans differ by credit allowance ('All plans include all features. Choose a higher plan for more credits.'); the page's FAQ covers subscriptions, refunds and when 'paid member credits reset'.
Confirmed
Free allowance
Not stated in the pricing page's visible text. A free-user figure exists in the page's embedded translation strings but is not displayed, so we do not quote it.Our listing's own pricing note (a daily credit allowance, with sustained use needing a paid plan) is unchanged.
Not yet checked by us
Models
'Chat with GPT, Claude, Gemini, Grok & more.' The listing had named GPT-4o, Claude 3.5 and Gemini 1.5 Pro; specific versions are no longer quoted.
Changed since last check
Editor verification notes
—Both fixes were possible without reading the vendor's site, because the contradiction was internal. Those are the cheapest real defects on the site to find.
Checked by the TheToolsVerse Verification Desk — by reading the vendor's own published pages, not by testing the product in an account. Sider can change prices at any time without notice. The date above is the last time we looked; if it looks old, treat every figure here as unconfirmed and check Sider directly before paying.
Sider is the most capable AI sidebar for users who work across many websites: it attaches GPT, Claude and Gemini models 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.
Reviewed by Sohail Akhtar
Lead Editor & Founder
Pros
What we like
Access GPT, Claude and Gemini models 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
Free plan with a daily credit allowance across its multi-model chat (GPT, Claude, Gemini and other models). Sustained use exhausts the daily credits and requires a paid plan.
What is Sider?
The Sider Chrome extension puts an AI chat beside any webpage, so you can summarize a long article, translate a page, draft content or ask questions about what you are reading without switching tabs.
The free tier runs on a daily credit allowance. Sider's pricing page lists chat with GPT, Claude, Gemini and Grok models, and paid plans add more credits. It also summarizes YouTube videos, analyzes PDFs, describes images, explains code and helps with research.
It suits researchers, students, marketers and developers who want a model available on the page they are already reading — a Wikipedia article, a PDF, a YouTube video — without moving to another tab. 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
YouTube, PDF and webpage summaries
GPT, Claude and Gemini in one sidebar
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 – Chrome Sidebar for GPT, Claude and Gemini
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, Claude and Gemini models for different task types without managing multiple accounts
It has a free plan, but it is not unlimited. Free use runs on a daily credit allowance, sustained use needs a paid plan, and Sider's own pricing page sells higher plans for more credits.
Which AI models available in Sider?
Sider's pricing page lists chat with GPT, Claude, Gemini and Grok models, among others, and you switch model from the sidebar. Model versions change often, so check the model menu for the current list.
Does Sider summarize YouTube videos?
It summarizes YouTube videos, pulling out key points against their timestamps so you can jump back to the source, and will turn that into notes.
Sider vs Merlin AI - key differences?
Sider has a free tier with a daily credit allowance across its multi-model chat, and sustained use exhausts it — our own pricing note says exactly that, so the "unlimited" this answer used to claim was contradicted elsewhere on this very page. We have also removed the comparison it drew against Merlin's free tier: we had not verified Merlin's limits, and an unchecked claim about a competitor is the kind of error that is hardest to justify. Check each vendor's current allowance directly.
Works on mobile Chrome browser?
Not in the way this answer used to describe. Chrome on iOS does not support extensions at all, so the desktop sidebar cannot run there, and support in Chrome for Android is limited. Sider's route to mobile is its own apps rather than the browser extension — check its current app listings for your platform instead of expecting the sidebar to appear on a phone.