
The gold standard conversational assistant with advanced reasoning and web search, but lacks a native multi-model sidebar.
The gold standard conversational assistant with advanced reasoning and web search, but lacks a native multi-model sidebar.
Monica records 4,512,775 monthly visits with -11.3% month-over-month growth and Freemium pricing. Side Reader records 355 monthly visits with -36.5% growth and Freemium pricing.
Read and chat with PDFs right beside ChatGPT, Claude and DeepSeek.
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | monica.im | side-reader.com |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 4.51M (4,512,775) | 355 (355) |
| MoM Traffic Delta | -573.08K (-11.3%) | -204 (-36.5%) |
| Primary Market & Share | 🇺🇸 United States (9.1%) | 🇻🇳 Vietnam (100%) |
| Direct Visits / mo | 2.5M | 149 |
| User Rating | 4.3 | 2.4 |
| Supported Platforms | Website | Website |

All-in-one AI assistant across web, browser, desktop and mobile
Chat with a rotating roster of leading LLMs from OpenAI, Anthropic, Google and others, switching models per task without separate subscriptions.
Works on Chrome and Edge to summarize pages and YouTube videos, explain or translate selected text, and assist with writing directly inside any web page.
Rewrite, humanize or generate text, get full-page bilingual translation, and chat with or translate PDF documents.
Create images, convert image-to-image, animate stills, remove backgrounds or watermarks, and generate logos and avatars.
Read and chat with PDFs right beside ChatGPT, Claude and DeepSeek.
PDFs render directly in the sidebar next to the chat, so your document and the AI conversation are visible at the same time.
Summarize a whole document, translate it, or have passages explained in simpler terms using the AI you are already signed into.
Built-in buttons cover the common actions, and you can edit their prompts to make the AI respond in the format and tone you need.
Ask about charts, scans or regions that cannot be selected by taking a screenshot question instead.

The gold standard conversational assistant with advanced reasoning and web search, but lacks a native multi-model sidebar.
The gold standard conversational assistant with advanced reasoning and web search, but lacks a native multi-model sidebar.
Exceptional analytical reasoning and artifact generation, but focused solely on Anthropic's models rather than multi-model aggregation.
Exceptional analytical reasoning and artifact generation, but focused solely on Anthropic's models rather than multi-model aggregation.

Excellent multi-model AI aggregator interface, but operates primarily as a web and mobile app rather than a sidebar.
Excellent multi-model AI aggregator interface, but operates primarily as a web and mobile app rather than a sidebar.

AI research platform for reading, understanding and writing scientific papers
AI research platform for reading, understanding and writing scientific papers
A free, AI-powered PDF editor for every device
AI sidebar and browser agent for reading, writing and research
AI sidebar and browser agent for reading, writing and research

Bilingual AI translation for websites, documents, video and images
Bilingual AI translation for websites, documents, video and images

Free AI-powered PDF editor, converter and reader for every device
Free AI-powered PDF editor, converter and reader for every device
Feature-rich browser extension bundling frontier models for summarization and writing, but with a distinct credit system.
Feature-rich browser extension bundling frontier models for summarization and writing, but with a distinct credit system.

One AI assistant that plugs ChatGPT, Claude and Gemini into every tab
One AI assistant that plugs ChatGPT, Claude and Gemini into every tab

Cross-platform PDF editing with GPT-powered AI for reading, translating, and signing documents