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Monica vs StealthGPT
Features, pricing, strengths and trade-offs — and which one fits your situation.
The verdict
Summary
Monica is best for an inexpensive all-in-one AI sidebar with many models, summaries and writing tools, while StealthGPT is best for rewriting AI-generated drafts so they read less like machine text. Monica has a free plan, while StealthGPT has no free plan.
Which should you choose?
Choose Monica if…
- You need an inexpensive all-in-one AI sidebar with many models, summaries and writing tools
- You're one of: students on a budget, professionals who want ai on every web page, users who want to try several models
- You want a free plan (StealthGPT doesn't have one)
- Low-cost paid plan compared with single-model subscriptions
Choose StealthGPT if…
- You need rewriting AI-generated drafts so they read less like machine text
- You're one of: content writers editing ai-assisted drafts where ai use is permitted, marketers adjusting tone of ai copy
- Simple paste-and-rewrite workflow
At a glance
| Monica | StealthGPT | |
|---|---|---|
| Best for | An inexpensive all-in-one AI sidebar with many models, summaries and writing tools | Rewriting AI-generated drafts so they read less like machine text |
| Free plan | Yes | Check site |
| Starting price | From $9.90/mo | From $14.99/mo |
| Learning curve | Low | Low |
| Platforms | Web, Windows, macOS, iOS, Android, Chrome extension | Web, Chrome extension |
| Ideal for | Students on a budget, Professionals who want AI on every web page, Users who want to try several models | Content writers editing AI-assisted drafts where AI use is permitted, Marketers adjusting tone of AI copy |
Feature comparison
| Monica | StealthGPT | |
|---|---|---|
| Answers with citations | Yes | Limited |
| Searches academic papers | — | No |
| Upload & chat with PDFs | Yes | — |
| AI content detection | Yes | Yes |
| Rewrites / humanizes text | Yes | Yes |
| Citation formatting | — | — |
| Browser extension | Yes | Yes |
| Writing editor | — | Limited |
IncludedLimited / higher plansNot available— Not confirmed
What each tool does
Monica
Monica is an AI assistant available as a browser extension, desktop app and mobile app that gives access to models from OpenAI, Anthropic, Google, DeepSeek and others. It summarizes web pages, videos and PDFs, helps with writing and translation, and bundles image and video generation, slides, mind maps and a deep research tool. Usage is metered by daily and monthly query or credit limits.
Key features- Sidebar extension for Chrome and Edge that works on any page
- Multiple models from different providers in one chat
- Web page, YouTube and PDF summaries and chat
- Writing, rewriting and translation tools
- AI detector and humanizer
- Image and video generation, mind maps and slide generation
StealthGPT
StealthGPT is an AI writing tool that combines a text generator with a 'humanizer' that rewrites AI text to lower AI-detector scores, plus a free AI detector. It is marketed mainly to students and content writers. Using it to submit AI-written work as your own can breach academic integrity and client policies.
Key features- AI humanizer that rewrites existing AI text
- Stealth Writer for generating essays and articles
- Built-in AI detector
- Adjustable rewrite tone and strength
- Chrome extension for rewriting in place (higher tiers)
Pricing
Monica
Free plan; Pro ~$9.90/mo (~$8.30/mo annual)
StealthGPT
Paid from ~$14.99/mo; ~30% off annual
Prices last checked September 2026. Plans change often — confirm on each vendor's site.
Pros and cons
Monica
Strengths- Low-cost paid plan compared with single-model subscriptions
- Syncs across extension, desktop and mobile apps
- Very wide toolbox in one product
- Free plan to try the extension
- Advanced-model queries are capped monthly, and credit rules are hard to follow
- Wide toolbox means individual tools are less deep than dedicated products
- No specialized academic paper database
- Extension needs broad access to the pages you visit
Not ideal for: Researchers who need peer-reviewed sources or users who prefer one simple, uncapped assistant should look elsewhere.
StealthGPT
Strengths- Simple paste-and-rewrite workflow
- AI detector can be used without signing up
- Combines generation and rewriting in one tool
- Tone controls help match a target style
- No permanent free plan for the humanizer
- Independent tests show mixed results against current detectors
- Rewrites can introduce awkward phrasing or change meaning
- Using it to disguise AI work can violate school and employer policies, with serious consequences
Not ideal for: Students whose institutions prohibit undisclosed AI use should not use it for graded work; a research or citation tool is a better fit for legitimate study.
Integrations
Monica
StealthGPT
FAQ
What is the main difference between Monica and StealthGPT?
Monica is built for an inexpensive all-in-one AI sidebar with many models, summaries and writing tools; StealthGPT is built for rewriting AI-generated drafts so they read less like machine text.
Is Monica or StealthGPT cheaper?
Monica starts from $9.90/mo and StealthGPT starts from $14.99/mo (as of September 2026). On entry price, Monica is cheaper — but compare what each plan includes, since limits differ. Always confirm current pricing on each vendor's site.
Do Monica and StealthGPT have free plans?
Monica has a free plan, while StealthGPT has no free plan.
Which is easier to use, Monica or StealthGPT?
Both have a low learning curve.
What are good alternatives to Monica and StealthGPT?
Other research & study tools worth comparing include Perplexity, Consensus and Merlin AI.
