Skip to content
effecthub

Monica vs UniJump

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Both have a free tier. Only Monica ships a public API.

MonicaMulti-model AI assistant living in a browser sidebarUniJumpFree Chrome extension that opens ChatGPT in an overlay on any page with a keyboard shortcut

Side by side

FactMonicaUniJump
CategoryBrowser Extensions & CopilotsBrowser Extensions & Copilots
Pricing modelFreemiumFree
Public APIYesNo
PlatformsWeb, macOS, Windows, iOS, Android, API, Chrome ExtChrome Ext
CompanyButterfly Effect Pte. Ltd.—
Launched20232023
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

Monica

Worth it if you want one subscription that reaches GPT, Claude and Gemini from wherever you already are; pointless if you live inside a single vendor's app and are happy there. The value is the sidebar and the model switching, not the intelligence, which is all rented.

Pros

  • Genuinely wide model roster, including image and video models, under one credit pool
  • Extension plus desktop plus iOS/Android means the same history follows you across devices
  • Separate prepaid developer API at platform.monica.im if you want the same aggregation in code

Cons

  • Prices are only visible after loading the pricing app, and the tier names have already shifted once (Unlimited became Max)
  • Advanced credits reset monthly, so heavy image or video use burns a Pro plan fast
  • You are a reseller's customer — outages, rate limits and model deprecations arrive second-hand
  • monica.cn is a separate China-market build run by a different legal entity, which confuses support and privacy expectations

UniJump

A single-purpose shortcut: ChatGPT in an overlay instead of a separate tab, at no cost and with no account of its own. The catch is age - nothing on the site has moved since 2023, and an extension that rides someone else's web session is exactly the kind of thing that breaks quietly.

Pros

  • No signup, no key, no payment - it uses the OpenAI session you already have
  • Cmd/Ctrl+J overlay works on any site rather than needing a dedicated tab
  • In-place paraphrasing of selected text
  • Code is on GitHub, so behaviour is inspectable

Cons

  • Site copyright has read 2023 for three years, with no visible updates
  • Depends on an undocumented web session rather than the official API, so an upstream change can break it
  • Chrome only, and no company or maintainer is named

Which one fits

Choose Monica if you need

  • People who compare answers across GPT, Claude and Gemini without paying three subscriptions
  • Reading and summarising foreign-language pages and PDFs in-place while browsing
  • Light users who want AI attached to the browser rather than in another tab

Choose UniJump if you need

  • People who bounce to ChatGPT constantly and want it over the current page
  • Anyone unwilling to pay a subscription for a wrapper around a free service
  • Users who want a paraphrase shortcut on selected text

More comparisons

All Monica alternatives →All UniJump alternatives →Browse all Browser Extensions & Copilots →