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AI Detector by 15Tools vs WriteWise AI Detector. Side by side.

Compare pricing, strengths, and use cases so it is easier to pick the right fit.

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AI Detector by 15Tools

Best overall

WriteWise AI Detector

For most everyday users, AI Detector by 15Tools wins on value and speed with its generous free tier and simple web interface, while WriteWise AI Detector is better for academics or professionals who need deep plagiarism checks and detailed heatmaps. The single biggest difference is price: 15Tools is free for casual use, whereas WriteWise costs $19/month and is aimed at serious verification.

AI Detector by 15Tools

#1306 of 3,826 Web

WriteWise AI Detector

$19/mo or $108/yr #1308 of 3,826 Web

Scores at a glance

AI Detector by 15ToolsWriteWise AI DetectorPractical Versatility

Onboarding Ease

Ecosystem Fit

Market Value

Choose AI Detector by 15Tools if

You're a student who wants to quickly check your own essay before submitting
You're a blogger or content writer checking short drafts for AI-sounding phrases
You want a free tool with no commitment and don't need plagiarism checking
You're a manager doing spot-checks on team writing without a budget

Choose WriteWise AI Detector if

You're a teacher or professor who needs to verify student work with both AI and plagiarism reports
You're a freelance editor handling long documents and need detailed heatmaps
You work in publishing or compliance and need a single PDF report for record-keeping
You're willing to pay for the latest model detection and academic database searches

Key differences

15Tools is free for casual use; WriteWise costs $19/month or $108/year
WriteWise includes plagiarism detection; 15Tools does not
15Tools has a browser extension for quick checks; WriteWise has a Chrome extension for CMS integration
WriteWise offers heatmaps and academic database searches; 15Tools gives simpler sentence-level highlighting
Both lack mobile apps, so you need a desktop or laptop
15Tools is better for speed and simplicity; WriteWise is better for depth and compliance

Facts side by side

	AI Detector by 15Tools	WriteWise AI Detector
Free plan
Mobile app
API access

AI Detector by 15Tools: strengths & weaknesses

Free tier is generous enough for students and casual bloggers to check short texts regularly
Extremely fast processing — paste text and get results in seconds
Sentence-level highlighting shows exactly which parts look AI-written
Supports the latest AI models like GPT-4o and Claude 3.5
No mobile app — you must use a desktop browser
Free version has strict word limits (likely under 1,000 words per check)
Occasionally flags technical writing as AI-generated (false positives)
No API or integrations with other tools like Google Docs or WordPress

WriteWise AI Detector: strengths & weaknesses

Combines AI detection with plagiarism checking in one report — saves time for teachers and editors
Detailed probability heatmaps show AI likelihood across every sentence
Detects content from the very latest LLMs (2025-2026 releases)
Integrates with academic learning management systems (like Canvas or Blackboard)
Costs $19/month or $108/year — expensive for casual users
Free tier is very limited (probably only a few hundred words)
No mobile app, so you're stuck on desktop
Can still give false positives on structured or technical writing

Common questions

Is AI Detector by 15Tools better than WriteWise AI Detector for checking student essays?

No — WriteWise is better because it combines AI detection with plagiarism checking in one report, which is what teachers need. 15Tools is fine for a quick personal check but lacks plagiarism search.

Can I use these tools on my phone?

Neither tool has a mobile app. You can open their websites in a phone browser, but the interfaces are not optimized for small screens, so it will be clunky.

Which tool is more accurate at detecting AI writing?

Both are accurate on common AI models, but WriteWise claims to detect the very latest 2025-2026 releases. 15Tools also supports GPT-4o and Claude 3.5. Both can give false positives on technical writing.

Is WriteWise worth $19 a month for a freelancer?

Only if you regularly need both AI detection and plagiarism reports for client work. If you just need to check your own writing occasionally, stick with 15Tools free tier.

Do these tools work with Google Docs or WordPress?

Neither has direct integrations with Google Docs or WordPress. 15Tools has a browser extension, and WriteWise has a Chrome extension for CMS, but you'll mostly copy-paste text.

Which tool is easier to start using right now?

15Tools — just open the website, paste text, and click scan. WriteWise requires account creation and has a more complex dashboard with multiple settings.

15Tools wins for free, fast, everyday checks; WriteWise wins for deep academic or professional verification with plagiarism built in.

If you just want a fast, free way to check if something sounds like AI, start with AI Detector by 15Tools — it's simple and does the job. If you're a teacher or editor who needs plagiarism checks and detailed reports, invest in WriteWise. Neither works on your phone, so keep a laptop handy.

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Detail pages: AI Detector by 15Tools · WriteWise AI Detector

AI Detector by 15Tools

WriteWise AI Detector

Free plan

Mobile app

API access