Sider AI

Sider AI started as a browser extension and grew into something more ambitious: a sidebar that works with any webpage and gives you instant access to over 20 AI models without switching tabs. Four million users and 32,000+ five-star reviews suggest it's filling a real gap.

The core value is model access without commitment. Rather than subscribing to ChatGPT, Claude, and Gemini separately, Sider gives you access all of them through one interface. You pick the model that suits the task, run your prompt, and stay in context on whatever page you're already reading. For people who hop between models to compare outputs, that alone saves meaningful time.

The feature set goes beyond basic chat. PDF chat lets you upload a document and interrogate it directly. The web summarizer condenses any page to key points on demand. The Deep Research agent pulls from 100+ sources and synthesizes results, which is useful for competitive research or background reading on unfamiliar topics. Writing assistance, translation, and image generation round out the toolkit, making it a reasonable all-in-one for knowledge workers who don't want to manage five separate AI subscriptions.

It works across Chrome, Edge, Safari, iOS, Android, Mac, and Windows, which is broader than most competitors. The multi-language support is also notably strong, with consistent praise from non-English users in reviews.

The main friction points: the free tier is limited to 30 basic credits per day, which isn't much if you're using it heavily. There's no conversation organisation or folder system, so managing history across sessions is messy. Some users also note that chat history disappears after closing tabs, which matters if you're mid-project.

Pricing is tiered and credit-based, starting with a free plan and scaling through Starter, Basic, Pro, and Unlimited tiers. None of the paid plans are expensive relative to buying multiple model subscriptions individually.

🛠️ Sider AI: Pros & Cons

| Category | Pros (The Wins) | Cons (The Friction) |

| :--- | :--- | :--- |

| Access & Value | Multi-model in one place: GPT-4o, Claude, Gemini and 17+ others without separate subscriptions. Cheaper than stacking individual plans. | Limited free tier: 30 basic credits per day runs out quickly for active users. |

| Workflow | Sidebar stays in context: No tab switching. Works on any page. Deep Research agent covers 100+ sources. | No conversation management: No folders, no search, history lost on tab close. |

| Platform | Broad cross-platform support: Chrome, Edge, Safari, iOS, Android, Mac, Windows all covered. | Extension dependency: Full functionality requires the browser extension installed. |

Features

20+ AI models including GPT-4o, Claude 3.5, and Gemini
PDF upload and chat
Web page summarisation on demand
Deep Research agent scanning 100+ sources
Writing assistant with rewrite and improvement tools
Image generation built in
Translation across multiple languages
Data analysis mode
Group chat support
Available on Chrome, Edge, Safari, iOS, Android, Mac, and Windows