# Best AI Browser Extensions in 2026 (Compared)

> Compares Sider, ChatGPT Web Clipper, Perplexity Extension, and Monica on research, multi-model chat, and translation to find the right AI browser extension.

_[Wortins Blog](https://www.wortins.com/blog) · Published Friday, August 7, 2026_

**If you want one extension that covers deep research, multi-model chat, and translation, Sider is the broadest option — it scans 100+ sources for research, gives sidebar access to GPT-5.4, Claude 4.7, and Gemini 3.1, and translates 50+ languages, backed by 6+ million weekly users. If you already live inside ChatGPT and just want it available while browsing, the Web Clipper is the simpler, narrower choice. For conversational search specifically, Perplexity's extension is purpose-built.** Most of these tools are free with paid tiers for premium models, so the decision is less about cost and more about how many jobs you want one sidebar to do.

Pricing across the category runs free to $5–$20/month for advanced model access, and several tools work across Chrome, Edge, Safari, and mobile.

## The short answer

**Sider** is the most feature-complete option here: deep research across 100+ sources with visualized reports, a saved knowledge base (Wisebase), sidebar access to multiple frontier models (GPT-5.4, Claude 4.7, Gemini 3.1), and translation across 50+ languages — available on Chrome, Edge, Safari, iOS, and Android, with a credit-based system for premium model access. If your need is narrower — you just want GPT-4-powered research and writing help without leaving the page — the **ChatGPT Web Clipper** does that specific job well. **Monica** covers similar ground to Sider (grammar checking, text simplification, multi-language support) as a sidebar assistant, making it a reasonable alternative if Sider's feature set feels like more than you need. And if your primary use case is search rather than chat or writing, the **Perplexity Extension** brings its conversational, cited-answer search style directly into the browser.

| Tool | Best for | Pricing | Key strength |
|---|---|---|---|
| Sider | All-around research, multi-model chat, translation | Subscription + credit system; free trial | 100+ source research, GPT-5.4/Claude 4.7/Gemini 3.1 access, 50+ language translation |
| ChatGPT Web Clipper | Simple in-browser GPT research/writing | Tied to ChatGPT access | Direct GPT-4 integration into browsing |
| Monica | Sidebar writing and multi-language assistant | Free with premium tiers ($5–$20/month range in category) | Grammar checking, simplification, idea generation |
| Perplexity Extension | Conversational search | Free with premium tiers in category range | Answer-generation search built into the browser |

## Sider

Sider is the broadest tool in this category by a clear margin. Its research mode scans 100+ sources and produces a visualized report, saving findings to a personal knowledge base called Wisebase rather than losing them in a chat history. On top of that, it gives sidebar access to multiple frontier models — GPT-5.4, Claude 4.7, Gemini 3.1 — so you're not locked into one provider, and it handles translation across 50+ languages with context awareness. It's available across Chrome, Edge, Safari, iOS, and Android, and with 6+ million weekly users, it's clearly the most adopted tool on this list.

**Pros:** widest feature set of any tool here (research, multi-model chat, translation, knowledge base); largest user base suggests a mature, well-supported product; available across nearly every major browser and mobile platform.
**Cons:** credit-based system for premium models adds complexity compared to flat subscriptions; the breadth of features may be more than users who just want one specific function (e.g., translation) need.
**Who it's for:** anyone who wants a single sidebar tool covering research, multi-model access, and translation rather than separate tools for each.

## ChatGPT Web Clipper

The Web Clipper is a narrower, more direct integration: it brings GPT-4-powered research and writing assistance into your browsing session without a separate feature set like Sider's knowledge base or multi-model switching.

**Pros:** simple, direct GPT-4 access without learning a new interface; good fit if you're already committed to the ChatGPT ecosystem.
**Cons:** single-model (GPT-4 family) rather than multi-model like Sider or Monica; no dedicated deep-research or translation feature set on the level of Sider's.
**Who it's for:** ChatGPT users who want the same assistant available while browsing, without needing model choice or research automation.

## Monica

Monica positions itself as a sidebar assistant for writing and language tasks — grammar checking, text simplification, idea generation — plus multi-language support, free with premium tiers available.

**Pros:** solid alternative to Sider if you want writing-focused features without the full research/knowledge-base toolkit; free tier available to start.
**Cons:** less emphasis on deep, multi-source research than Sider; feature overlap with Sider means the choice mostly comes down to interface preference.
**Who it's for:** writers who want grammar and tone help alongside translation, without needing Sider's research-report capabilities.

## Perplexity Extension

Perplexity's browser extension brings its core product — conversational, cited search — directly into your browsing session, which is the right fit if search and sourced answers are your primary use case rather than writing or document research.

**Pros:** purpose-built for conversational search with cited answers, a distinct strength versus general-purpose chat sidebars.
**Cons:** narrower scope than Sider — no stated multi-model chat, translation, or writing-assistant feature set.
**Who it's for:** users whose main browser-AI need is search-with-citations rather than research reports, writing help, or translation.

## How to choose

If you want one extension to handle research, multi-model chat, and translation without juggling separate tools, Sider's breadth makes it the strongest default, and its free trial makes testing that breadth low-risk. If you're already deep in the ChatGPT ecosystem and just want that same assistant while browsing, the Web Clipper is simpler and requires no new mental model. If writing quality and tone are your main concern, Monica's grammar and simplification tools are a reasonable and possibly lighter-weight alternative to Sider. And if search is genuinely your primary use case — you want cited, conversational answers rather than a research report or a writing assistant — the Perplexity Extension is built specifically for that.

Most of these tools are free to start, with premium model access typically costing $5–$20/month, so trying two or three against your actual daily browsing habits is a reasonable way to decide before paying for anything. For a related comparison in dev tooling, see our guide to [the best AI code editors](/blog/best-ai-code-editors-2026).

Source: [Sider: AI Research Agent & Extension](https://www.producthunt.com/products/chatgpt-sidebar-chrome-extension)

---

*Wortins tracks the AI industry daily, from new tools to the [biggest funding rounds](/funding). [See today's briefing](/).*

## Frequently asked questions

### What is the best AI browser extension for research?

Sider AI excels for deep research, scanning 100+ sources and creating visualized reports; Perplexity Extension is best for conversational search; ChatGPT Web Clipper is ideal for content capture.

### Can AI browser extensions chat with multiple AI models?

Yes. Sider supports GPT-5.4, Claude 4.7, and Gemini 3.1; Monica offers multi-model access; most compete on sidebar convenience vs. visiting each AI separately.

### Do AI browser extensions handle translation?

Sider translates 50+ languages with context-aware accuracy; Monica supports full-webpage translation; ChatGPT Web Clipper handles English well for clipped content.

### Which AI browser extension is best for writers?

Sider and Monica both offer grammar checking, tone adjustment, and idea generation; ChatGPT Web Clipper excels for research capture during writing.

---

_Curated and written by [Wortins](https://www.wortins.com) — The daily AI briefing. Every story links to its original source; the "Wortins read" on each is our own original analysis. [About Wortins & our editorial approach](https://www.wortins.com/about)._