What it is
Overview
A browser-based AI assistant that aggregates multiple chatbots — GPT-4, Claude, Gemini — into a single interface with sidebar access across websites. Built as a wrapper that routes queries to different underlying models based on user selection. The 3.5 million monthly visitors skew toward content creators and developers who want model variety without switching tabs or managing separate subscriptions.
At a glance
Usability & Quality overview
Best for
- students
- professionals
- researchers
Watch out for
- browser permissions
- privacy concerns
- freemium limitations
Built on another provider's modelResells a third-party model API
Sider aggregates popular AI models like ChatGPT, Claude, and Gemini into a browser extension with some workflow features, but doesn't appear to offer proprietary technology or significant UX innovations beyond convenient multi-model access in one interface.
Moderate evidenceQuality score
Sider AI is a powerful productivity tool with effective core functionality, but recurring privacy concerns and freemium limitations slightly reduce user satisfaction.
Plans
Pricing
How free is free?
Free with limits
Basic access on free; Lite $25/mo for regular use
What you get for free
- Basic access to Sider features
- AI sidebar for browser content understanding
- Limited usage quotas (specifics not disclosed)
Behind the paywall
- Higher usage quotasLite
- Advanced AI models accessPro
- Maximum productivity featuresMax
Cost to actually use
Based on 12 classified review complaints about rate limits, credits, and billing.
Community feedback
Aggregated reviews
Ratings and quoted comments below are aggregated from third-party sources and reflect those users' views, not SearchTools.ai's.
What reviewers talk about
themes inside the Sentiment pillar — not score ingredients
59Output Quality19 mentions
“I'm using Sider for my open source project written in Ruby for more than two years. Sider works with GitHub. Every time I push my code to GitHub, Sider hooks the commit and run static code analysis such as rubocop, rails_best_practices, brakeman and so on, and post the verificati”
“Dont get it! I have used it for 3 months and the service and models keep getting worse. I can send you cases, where the model told me wrong information, the pdf read function is NOT working, so it wont summarize documents, which is a basic function. Google AI, DeepAI so much be”
“DO NOT GET THIS AI. IT IS WAY TOO STUPID, AND WHEN I USED IT ON AN ONLINE CLASS, IT SAID THE WRONG ANSWER TO THE QUESTION. I ASKED IT 1 QUESTION AND GOT IT WRONG, AND IT BEGS ME TO PAY WAY TOO MUCH.”
“I like sider because it can connect to many diffrent AI models, from chatGPT, Claude, Gemini...it's all great, and you can also generate image with models like nanobanana, or chatGPTimage. If you have paid subscription, you can also generate video!! but only up to 12 second clip ”
46Value & Pricing19 mentions
“I have used Sider AI to create 3 websites and 2 presentations. Does its job well. Word of Caution: It only creates the front end for websites for the most part, back end logics and data base etc dont seem to be supported. So works great for corporate websites where you just want ”
“Przy zakupie pakietu miesięcznego za 40$ pakiety nielimitowane okazały się limitowane i miesięczny pakiet wyczerpał się pierwszego dnia po ok 5h. Brak wskaźników które pokazywałyby że jakiś kredyt się kończy a są tylko znaczki nieskończoności i przy jednym profesjonalnym kredyty ”
“Scammers! They claim it's free, but as with all the other fraudsters an scammers out there, it's a lie!”
“Sider.ai be aware of the ? That tells it is not unlimited you only have 1500 credits don't be deceive by the words unlimited. You have a Unlimited account But That's not True. Since paying US$300 in March 2025 I have paid NZ$200 for more credit as my unlimited account went over i”
39Reliabilitythin data · 7 mentions
“Is this extension legit/safe? As of Sep 3 2024, Sider.Ai 46.2k rating on the chrome webstore, when which doing a quick search on webstore, seems like one of the most popular and reviewed apps on the webstore. It feels incredible to use and super powerful. It also says they track ”
“Przy zakupie pakietu miesięcznego za 40$ pakiety nielimitowane okazały się limitowane i miesięczny pakiet wyczerpał się pierwszego dnia po ok 5h. Brak wskaźników które pokazywałyby że jakiś kredyt się kończy a są tylko znaczki nieskończoności i przy jednym profesjonalnym kredyty ”
“Terrible customer service! Arrogant and slow. I have a yearly subscription 200+ EUR and have onboarded 7 employees on Sider. I like the product itself, but the customer support experience has been genuinely awful. After traveling, I was suddenly locked out across all my devices”
“Dont get it! I have used it for 3 months and the service and models keep getting worse. I can send you cases, where the model told me wrong information, the pdf read function is NOT working, so it wont summarize documents, which is a basic function. Google AI, DeepAI so much be”
32Supportthin data · 6 mentions
“Terrible customer service! Arrogant and slow. I have a yearly subscription 200+ EUR and have onboarded 7 employees on Sider. I like the product itself, but the customer support experience has been genuinely awful. After traveling, I was suddenly locked out across all my devices”
“Dont get it! I have used it for 3 months and the service and models keep getting worse. I can send you cases, where the model told me wrong information, the pdf read function is NOT working, so it wont summarize documents, which is a basic function. Google AI, DeepAI so much be”
“I have tried contacting sider.ai both on a contact form and by email several times without any replies. Sider.ai seems legit, but what are your recent experiences as of April 2024 - is it a legit service? What I am tying to figure out before subscribing to sider.ai is: Currently ”
“I do not recommend Sider.AI. It’s relatively expensive and handles different AIs poorly. It often uses non-existent words. It feels like it’s just trying to imitate the original AIs. In my opinion, its image editor is outright dumb. What I suggest instead: use the original AIs (”
59Ease of Usethin data · 8 mentions
“I'm using Sider for my open source project written in Ruby for more than two years. Sider works with GitHub. Every time I push my code to GitHub, Sider hooks the commit and run static code analysis such as rubocop, rails_best_practices, brakeman and so on, and post the verificati”
“Appalling. Tried to delete account after one day. Chat bot was useless and even re-phrased my English. The delete pathway should be CLEAR and intuitive under account settings.”
“Doesnt have a "delete account" possibility in account settings and you need to contact them on a hidden email - which is a real time waster. ”
“Its not possible to upload documents in the desktop apps on windows and mac. I think this is most basic functionality and absolutely cant understand why thats not possible!?? Otherwise the web app is pretty good.”
60Trust derived from dimensions + predator detectionview math
A composite of the quality dimensions weighted by mention volume, then capped by predator / abuse-detection rules.
Reasoning
Capabilities
Key features
Chatbot
Holds conversations and answers questions through a natural-language chat interface
Productivity Tools
Automates routine tasks and streamlines daily workflows to help you get more done
Content Generator
Produces written content like articles, posts, and copy from brief prompts
The honest take
What users love & flag
Distinct themes surfaced across 18K reviews from 3 sources — each grounded in real review text, ranked by how often it comes up.
Questions
Frequently asked
What is Sider?
Sider is an AI-powered browser extension that adds a sidebar to your browser for automating tasks, understanding content, and customizing websites. It combines three main functions: Chat for analyzing web content using AI models like GPT-5.5 and Claude, Claw for automating multi-step browser tasks across real websites, and Code for customizing website appearances with natural language commands.
Is Sider free?
Sider offers a free plan with basic access to features, plus paid subscription plans starting at $25/month for the Lite plan. The Pro plan costs $50/month and the Max plan is $100/month, with annual billing offering 17% savings. Each paid plan includes different credit limits and cloud computer specifications.
Can Sider automate tasks across multiple websites?
Yes, Sider's Claw module can navigate websites, compare prices across e-commerce platforms like Amazon, Best Buy, and eBay, fill out forms automatically, and research information across different sites. It uses your existing logged-in sessions, so you don't need additional authentication for automated tasks.
What AI models does Sider support?
Sider Chat works with multiple frontier AI models including GPT-5.5, Claude Fable 5, DeepSeek, and Gemini. You can use these models to summarize articles, translate content, analyze YouTube videos and PDFs, and ask follow-up questions about any webpage you're viewing.
Can I customize websites with Sider?
Yes, Sider Code allows you to modify website appearances and functionality using natural language commands. Your customizations are automatically saved and applied on future visits to the same sites, letting you personalize how websites look and function without needing coding knowledge.
What platforms is Sider available on?
Sider supports Chrome and Edge browsers, works on Mac OS and Windows computers, and is also available on iOS and Android mobile devices. You can maintain the same account across all platforms for a consistent experience.
How does Sider compare prices across different stores?
Sider can automatically search for products across multiple e-commerce platforms like Amazon, Best Buy, and eBay, compare their prices, and compile results with total costs. You simply give it natural language instructions about what you're looking for, and it handles the research and comparison work.
Can Sider work with PDFs and YouTube videos?
Yes, Sider can analyze and interact with content from PDFs and YouTube videos in addition to regular web pages. You can ask it to summarize video content, translate PDF documents, explain concepts from either format, and ask follow-up questions about the material.
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