Monica

One AI sidebar with GPT, Claude, Gemini and more, wherever you browse.

Hand-reviewed by the Toolglade team·Updated Aug 2026

productivity#ai-assistant#browser-extension#productivity#writing

Free plan Mobile app Browser extension

Toolglade’s take

Monica is one of the more feature-complete AI sidebars, bundling many models plus image and video generation across browser, desktop, and mobile. The free tier is genuinely usable for light tasks, but advanced-model access is metered by credits and the plan ladder (Pro, Max, Ultra) climbs quickly for power users. Worth noting for the privacy-conscious: Monica's parent, Butterfly Effect, has Chinese roots and was the subject of a Meta acquisition attempt in late 2025 that was blocked by regulators, so organizations with data-sovereignty concerns should evaluate accordingly.

About Monica

Monica is a freemium AI browser assistant and multi-platform app that unifies access to multiple leading language models in a sidebar. It handles page and video summarization, writing and rewriting, translation, code help, and image or video generation, and it embeds into apps like Gmail and Notion. It is aimed at students, writers, and knowledge workers who want a single subscription covering many models across Chrome, Edge, desktop, and mobile.

Monica (monica.im) is a browser extension and multi-platform AI assistant that gives you a single sidebar to chat with several frontier models, including options built on GPT, Claude, and Gemini. Rather than opening a separate chat site, you invoke Monica on any page to summarize articles, condense YouTube videos, rewrite selected text, translate, generate images, and debug code. It embeds into common web apps such as Gmail, Notion, and WordPress so assistance appears in context. The product is built by Butterfly Effect, the Singapore-registered company (also associated with the Manus agent) founded by Xiao Hong. Monica has grown into a broad consumer AI suite with Chrome and Edge extensions plus desktop and mobile apps, positioning itself as a do-everything assistant for students, writers, and knowledge workers who want many models behind one subscription. Monica competes directly with Sider, Merlin, and MaxAI in the crowded AI-sidebar space. Its differentiation is breadth: a wide model roster, image and video generation, and deep integrations across popular tools. The trade-off is that credit and query caps vary by tier, and heavy users of advanced models can hit limits or need to move up plans.

TL;DR

Monica is a freemium AI browser assistant that bundles many leading models into one sidebar across Chrome, Edge, desktop, and mobile. It excels at summarizing pages and videos, in-context writing, translation, and image or video generation. Paid tiers range from about $9.90 to $99.90 per month, gated by credit and query limits. It is built by Butterfly Effect, the company also behind the Manus agent. It suits individuals more than governed enterprise teams.

Company overview

Monica is a product of Butterfly Effect, a company founded by Xiao Hong in 2022 and registered in Singapore, also known for the Manus AI agent. The firm has Chinese roots and raised a Series B reportedly around a $500 million valuation led by Benchmark in 2025.

In late 2025 Meta reportedly agreed to acquire Butterfly Effect for a figure exceeding $2 billion, but Chinese regulators blocked the deal on national-security grounds and it was subsequently unwound. Monica itself continues to operate as a large consumer AI product.

Product features

Monica centers on a browser sidebar that provides multi-model chat, page and YouTube summarization, writing and rewriting, translation, and code assistance, plus image and video generation. It embeds into apps such as Gmail, Notion, and WordPress so help appears where you already work.

Beyond the extension, Monica ships desktop and mobile apps that share one account and subscription. Advanced features are metered through credits, and the plan tiers scale limits and model access rather than fundamentally different feature sets.

Target market

Individual consumers, students, writers, marketers, and knowledge workers who want a single subscription that covers many AI models and everyday browsing tasks.

Buyer personas

End users

Students, writers, marketers, and everyday browsers who summarize, translate, and draft content across the web.

Buyers

Typically the individual user paying a personal subscription rather than a procurement team.

Key influencers

Productivity YouTubers, AI-tool reviewers, and word-of-mouth among students and creators.

Ideal customer profile

A power internet user who reads and writes a lot online and wants many models plus summarization, translation, and generation behind one affordable subscription.

Funding & performance

Monica's parent Butterfly Effect reportedly raised a $75 million Series B at around a $500 million valuation led by Benchmark in 2025, with earlier backing from Tencent and ZhenFund. A subsequent proposed Meta acquisition was blocked by regulators and unwound.

Pros & cons

Pros

Single sidebar with access to many leading models
Works across browser extension, desktop, and mobile
Strong page and YouTube video summarization
Deep integrations with Gmail, Notion, and WordPress
Includes image and video generation beyond text
Usable free tier for light everyday tasks

Cons

Advanced model use is metered by credits that can run out
Plan ladder gets expensive for heavy users
Overlaps heavily with cheaper competitors
No public API for developers
Not designed for team collaboration or admin controls
Parent-company ownership questions may concern some enterprises

Pricing plans

Free

$0 / month

Limited daily queries
Access to basic models
Core summarize, chat, and translate features

Pro

$9.90 / month

Thousands of basic queries
Advanced model credits
Multi-model chat and generation

Max

$24.90 / month

Higher or removed basic query caps
Larger advanced credit allowance
Priority access to features

Ultra

$99.90 / month

Largest advanced credit allowance
Access to top premium models
Highest usage limits

Key features

Mobile app

Browser extension

Multi-language

Integrations

Gmail, Notion, WordPress, YouTube, Chrome, Edge

Input types

text, webpage, video, pdf, image

Output types

text, image, video

Best For

summarizing long articles and videos, multi-model chat in one place, in-context writing help, quick translation while browsing

Compare key features

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Feature

Monica

Fyxer

Bricks

Pricing

Freemium

Paid

Freemium

Free plan

Yes

Free trial

Yes

Team support

Yes

Frequently asked questions

Is Monica free to use?+

Yes, Monica has a free plan with a limited number of daily queries and access to basic models. Advanced models and higher limits require a paid tier.

Which AI models does Monica support?+

Monica provides access to multiple leading models, including options built on GPT, Claude, and Gemini, selectable from its sidebar. The exact roster changes as new models release.

Does Monica work on mobile?+

Yes. In addition to Chrome and Edge extensions, Monica offers desktop apps and iOS and Android apps that share your account.

Can Monica summarize YouTube videos?+

Yes. Monica can generate summaries of YouTube videos and webpages directly from its sidebar, which is one of its most-used features.

Who makes Monica?+

Monica is developed by Butterfly Effect, the company also associated with the Manus AI agent, founded by Xiao Hong.