Pricing
Honest. Simple.
Start free. Upgrade only when you love it.
Up to 30% cheaper than Undetectable.ai.
MonthlyAnnual4 months free
Starter
$12
per month
10,000 words / mo
Undetectable.ai charges $19 for same words
- ✓Monthly reset
- ✓All 5 detectors
- ✓History saved
- ✓Cancel anytime
Payments coming soon
Most Popular
Pro
$24
per month
50,000 words / mo
- ✓Monthly reset
- ✓All 5 detectors
- ✓History & badges
- ✓Priority processing
- ✓XP & level system
Payments coming soon
Unlimited
$49
per month
250,000 words / mo
Power users & content teams
- ✓Hard cap 250k/mo
- ✓All 5 detectors
- ✓Full history
- ✓Priority support
- ✓API access soon
Payments coming soon
Cancel anytime · Switch to annual and save 33%
How we compare
Plan
PenSmith
Undetectable.ai
10k words/month
$7
$9.99
50k words/month
$19
~$49
Free trial
300 words
Limited
Gamification
✓ Badges & XP
✗
Money-back guarantee
✓
✓
Billing FAQ
When am I charged?+
You're charged on the day you subscribe, then on the same date each month. Your word count resets automatically on that date.
Can I switch plans?+
Yes. Upgrade or downgrade anytime from your account page. Upgrades are instant. Downgrades take effect at the next billing cycle.
Do unused words roll over?+
No — word counts reset each billing cycle. This keeps pricing fair and costs predictable for everyone.
Why is PenSmith cheaper than competitors?+
We built PenSmith on DeepSeek's efficient API which delivers better humanisation at lower inference cost. We pass those savings on to you.