Monica vs Sider

Monica

• People who want AI help inside the browser on any web page
• Summarizing web pages, YouTube videos and PDFs
• Using several model families under one subscription

Sider

• People who want an AI side panel on every browser tab
• Comparing answers from several models in a single chat
• Summarizing and translating pages, PDFs and YouTube videos

Monica

• The Free plan allows 40 basic-model requests a day and gives only limited trials of image and video generation, ChatPDF and the AI Agent.
• Pro is capped at 5,000 basic and 200 advanced model queries a month, and image, video and agent features spend Advanced Credits on every plan.
• Accounts are for personal use only, and Monica says a team subscription has not launched. The prices listed are for annual billing.
• Monica's help center describes an August 2026 transition in which data created since December 29, 2025 was set to be deleted for users in certain regions.

Sider

• Sider's website answers automated readers with a security check, so the prices here are US App Store in-app prices and web prices may differ.
• The store listings do not say how much usage the free tier includes or what each paid plan adds.
• Sider told an App Store reviewer that the Pocket Plan is for mobile use and that its credits cannot be spent in the desktop browser.
• The App Store also lists legacy Basic subscriptions and a $40.00 Plus plan without describing them, and Google Play shows items from $9.99 to $999.99.

Monica

Many models in one chat

Chats with models such as GPT-5.5, Claude 4.6 Sonnet and Gemini 3.1 Pro from one account, and can show answers from several models side by side for comparison.

Browser sidebar and toolbar

The Chrome and Edge extension opens an AI sidebar on any web page, and a toolbar explains, translates or summarizes whatever text you select.

Summaries of pages, videos and files

Summarizes web pages and files, pulls highlights with timestamps from YouTube videos, and answers questions about PDFs through ChatPDF.

Writing and translation

Drafts and rewrites text on any page, checks grammar, suggests replies in Gmail and Outlook, and translates whole web pages for side-by-side bilingual reading.

AI Agent tools

Deep Research, Create Slides, Image Studio and Browser Operator run as agent tasks. Each one spends Advanced Credits from the plan's monthly allowance.

Image and video generation

Generates images and video with models such as Nano Banana 2, GPT Image 2, Sora 2 and Veo 3, also charged in Advanced Credits.

Sider

Sidebar with many models

The extension opens a side panel on any tab for chatting with GPT, Claude, Gemini, Grok, DeepSeek and other models. A Fusion model picks a model for each request automatically.

AI group chat

Put the same question to several models in one chat by @-mentioning them, then compare their answers as they arrive.

Chat with files and pages

Ask questions about PDFs, images, audio files, a web page or several open tabs. The mobile app accepts more than 30 file formats as well as images and URLs.

Reading and video summaries

Summarizes articles, web pages and PDFs, and condenses YouTube videos into highlights, with bilingual subtitles available while watching.

Writing and translation

Offers writing help in any input box, rewording and tone changes, a grammar checker, and translation of selected text, full pages, PDFs and images into 50+ languages.

Wisebase and Sider Claw

Wisebase is a knowledge base for uploaded files and saved websites. Claw, in the mobile app, takes a request and researches, compares, extracts and compiles the results.

Monica

• Free$0

  40 requests to basic models a day, with limited trials of image and video generation, ChatPDF and the AI Agent. Up to 3 login devices.

• Pro$8.3

  per month, billed annually ($99 per year)

  5,000 basic and 200 advanced model queries a month, 1,500 Advanced Credits, the AI Agent, and image and video generation.

• Max$16.6

  per month, billed annually ($199 per year)

  Unlimited basic and advanced model access with 4,500 Advanced Credits. Formerly Unlimited and still in beta. Shown as a flash sale from $299 per year.

• Ultra$82.9

  per month, billed annually ($995 per year)

  Unlimited basic and advanced model access with 20,000 Advanced Credits and up to 10 login devices, for heavy AI Agent use.

Sider

• Free$0

  The apps and the browser extension are free to install. The store listings do not state how much usage is included without a plan.

• Pocket Plan$49.99

  per year (US App Store in-app purchase)

  A plan for mobile use. Sider's reply to an App Store review says Pocket credits cannot be used in the desktop browser.

• Basic$9.99

  per month (US App Store in-app purchase)

  Listed as Sider Basic Plan Monthly. The App Store listing does not describe what the plan includes.

• Pro$19.99

  per month (US App Store in-app purchase)

  Listed as Sider Pro Plan Monthly. The App Store listing does not describe what the plan includes.

• Unlimited$39.99

  per month, or $299.99 per year (US App Store)

  Listed as Sider Unlimited Plan, monthly or yearly. The App Store listing does not describe what the plan includes.

Monica

• Annual discount

  Save 17% with annual billing

  The pricing page marks Pro ($99 per year) and Ultra ($995 per year) as saving 17% with annual billing. Max is shown at $199 per year, crossed out from $299, as a 33% flash sale with no end date given.

Sider

• Annual discount

  Unlimited costs less when paid yearly

  The US App Store lists the Unlimited plan at $39.99 a month or $299.99 a year. Twelve monthly payments come to $479.88, so the yearly price is about 37% lower.