S
SHumbot vs Undetectable AI
Pricing, features, platforms and who each one suits — side by side.
H
Choose Humbot if…
- you're in its core audience: students, content writers
U
Choose Undetectable AI if…
- you work on Chrome
- you're in its core audience: students, content writers and marketers
Side by side
Feature Humbot Undetectable AI
Pricing modelFreemiumFreemium
Starting price—$5/mo
Free plan
Free trial
API
Open source
PlatformsWeb, APIWeb, Chrome, API
CompanyHumbotUndetectable Inc.
Full feature lists
H Humbot
- AI text humanizer for AI-generated content
- AI content checker and AI image detector
- Plagiarism checker and grammar checker
- Gemini-powered article rewriter
- Translator covering 100+ languages
- Math solver, homework helper and question AI
- Quiz generator, flashcard maker and summarizer
- ChatPDF and citation generator with 40+ styles
U Undetectable AI
- Sentence-level AI content detection
- AI humanizer that rewrites text to read naturally
- Paraphrasing tool and AI essay writer
- AI plagiarism checker and text watermark remover
- Image, audio, video and deepfake detectors
- Fake PDF, receipt and ID detectors
- Chrome extension for Google Docs and Gmail
- Supports 50+ languages
Their home pages
What each vendor shows first: the pitch, the plans and the sign-up.
Humbot · humbot.ai
Undetectable AI · undetectable.aiWhat you'd pay
The cheapest plan that fits, per month, billed yearly where the plan offers it.
Humbot
BasicNot listed
ProNot listed
UnlimitedNot listed
Undetectable AI
10K words$9.99/mo, or $5.00/mo billed yearly ($60)
20K words$19.00/mo, or $9.50/mo billed yearly ($114)
35K words$31.00/mo, or $15.75/mo billed yearly ($189)
50K words$42.50/mo, or $21.25/mo billed yearly
BusinessCustom
Price changes we've recorded
We re-read each pricing page every month and log what changed.
Humbot
No changes since we started tracking.
Undetectable AI
- Nov 8, 2026Pricing model: Free trial → Freemium; 10K words: $5 → $9.99; 20K words: $9.50 → $19; 35K words: $15.75 → $31; 50K words: $21.25 → $42.50
Strengths and limitations
Humbot
- Writing, detection and study tools in one subscription
- Credits work across all tools
- 30-day money-back guarantee
- Vendor says it is ISO 27001 and SOC 2 certified and does not store or train on documents
- Basic plan limits each request to 500 words
- Advanced word allowance is capped on every plan
- Plan upgrades take effect from the next billing cycle
Undetectable AI
- Detection and humanizing in one tool
- Unlimited AI detecting on all individual plans
- Yearly billing roughly halves the monthly price
- Chrome extension works in Google Docs and Gmail
- Free trial is limited to 250 words
- Accuracy is highest in English
- Humanizing is capped by the plan's monthly word limit
More comparisons
Other options to consider
SS
From $29.99/mo
H
HRewrites AI-generated text to read as human, with a built-in AI detector
Free, from $9.99/mo
H
Free, from $9.99/mo
H
Rewrites AI-generated text to read as human, with a built-in AI detector
AI HumanizersFree planAPI
B
BB
Freemium
B
Rewrites AI-generated text to read as human for students and marketers
AI HumanizersFree planAPI
W
WRewrites AI-generated text to read naturally, with a built-in AI detector
Free, from $12/mo
W
Free, from $12/mo
W
Rewrites AI-generated text to read naturally, with a built-in AI detector
AI HumanizersFree planAPI
G
GG
Freemium
G
AI text detector with plagiarism checks and writing replay for educators
AI DetectorsFree planAPI
O
OAI content detection, plagiarism and fact checking for publishers and educators
Free, from $12.95/mo
O
Free, from $12.95/mo
O
AI content detection, plagiarism and fact checking for publishers and educators
AI DetectorsFree planAPI
Facts from each vendor's public pages, prices checked Nov 8, 2026. Editorial policy