kitio.aiProofig AI vs SurfSense
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Proofig AI starts at $99 one-time and SurfSense starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Manipulation detection
- Duplication and reuse detection
- AI-generated image detection
- PubMed source plagiarism check
- Private self-plagiarism database
- Octym manuscript review
- Runs fully offline
- Local models or your own keys
- Windows, macOS and Linux app
- Scraper plugins
- Web crawler
- No account needed
| Feature | Proofig AI | SurfSense |
|---|---|---|
| Best for | Checks scientific papers for image manipulation and reuse | Private, open-source research notebook that runs on your own machine |
| Category | Research & search | Research & search |
| Pricing model | Paid | Freemium |
| Starting price | $99 one-time | See pricing page |
| Free plan | No | Yes |
| Made by | Proofig | SurfSense |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Proofig AI starts at $99 one-time and SurfSense starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
5 plans
Starter
$99 one-time
- 3 submissions
- One paper with revisions
- Valid 12 months
Growth
$249 one-time
- 8 submissions
- A year of submissions
- Valid 12 months
Pro
$399 one-time
- 14 submissions
- Several papers a year
- Valid 12 months
Pro Plus
$549 one-time
- 22 submissions
- For prolific authors
- Valid 12 months
Multi-User and Enterprise
Contact sales
- Central user management
- SSO, REST API and integrations
- Private database
2 plans
Free
Free
- Full app on Windows, macOS, Linux
- Runs offline
- 14-day plugin licence
Individual
$60 first year, then $120/yr
- All scraper plugins
- Web crawler
- Priority support
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Proofig AI
- Covers manipulation, duplication and AI images
- Accepts PDF, Word and image files
- Submissions are not used to train models
- Individual packages are limited to 3 to 22 submissions
- Packages expire after 12 months
- Aimed at research, not general image checks
SurfSense
- Data never leaves your machine
- Free app with no usage cap
- Source code is public
- Plugins and support need a licence
- You supply the model or keys
- Moving to a local app changes older setups
Which one should you choose?
Choose Proofig AI if you want:
- Covers manipulation, duplication and AI images
- Accepts PDF, Word and image files
- Submissions are not used to train models
Watch out: individual packages are limited to 3 to 22 submissions.
Choose SurfSense if you want:
- Data never leaves your machine
- Free app with no usage cap
- Source code is public
Watch out: plugins and support need a licence.
Proofig AI vs SurfSense FAQ
What is the difference between Proofig AI and SurfSense?
Proofig AI: Checks scientific papers for image manipulation and reuse. SurfSense: Private, open-source research notebook that runs on your own machine. Both are research & search tools.
Is Proofig AI or SurfSense cheaper?
Proofig AI starts at $99 one-time and SurfSense starts at See pricing page. Check both pricing pages for current plans.
Do Proofig AI and SurfSense have free plans?
Proofig AI: No. SurfSense: Yes.
Who makes Proofig AI?
Proofig AI is made by Proofig.
Who makes SurfSense?
SurfSense is made by SurfSense.
Which should I choose, Proofig AI or SurfSense?
Choose Proofig AI if you value covers manipulation, duplication and ai images and accepts pdf, word and image files. Choose SurfSense if you value data never leaves your machine and free app with no usage cap.