kitio.aiGoogle AI Mode vs Penelope.ai
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Google AI Mode is completely free, while Penelope.ai is paid.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Conversational search
- Query fan-out
- Multimodal questions
- Deep Search
- Follow-up questions
- 30+ configurable manuscript checks
- Ethics and declarations checks
- Reference checking
- Annotated interactive report
- Manuscript Manager integration
- Metadata extraction
| Feature | Google AI Mode | Penelope.ai |
|---|---|---|
| Best for | Conversational AI search mode inside Google Search | Automated checks that a manuscript meets a journal's requirements |
| Category | Research & search | Research & search |
| Pricing model | Free | Paid |
| Starting price | Free | See pricing page |
| Free plan | Yes, fully free | No |
| Made by | Penelope.ai | |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Google AI Mode is completely free, while Penelope.ai is paid.
Free plan
Cheapest paid plan
Top plan
Free trial
5 plans
Under 500 submissions
£750/yr
- £1.50 per submission
- Full suite of checks
501 to 1,000 submissions
£1,350/yr
- £1.20 per submission
- Full suite of checks
1,001 to 2,500 submissions
£2,850/yr
- £1.00 per submission
- Full suite of checks
2,501 to 5,000 submissions
£4,850/yr
- £0.80 per submission
- Full suite of checks
Over 5,000 submissions
Custom
- £0.80 per submission
- Custom annual price
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Google AI Mode
- Free and widely available
- Draws on Google's index
- Handles multimodal input
- Fewer citations than research tools
- Features vary by country
Penelope.ai
- Results are explained, not a black box
- Each journal can set its own rules
- Option to offer author-paid checks for free
- Integrates only with Manuscript Manager so far
- Prices listed only in pounds
- Aimed at journals rather than individual authors
Which one should you choose?
Choose Google AI Mode if you want:
- Free and widely available
- Draws on Google's index
- Handles multimodal input
Watch out: fewer citations than research tools.
Choose Penelope.ai if you want:
- Results are explained, not a black box
- Each journal can set its own rules
- Option to offer author-paid checks for free
Watch out: integrates only with manuscript manager so far.
Google AI Mode vs Penelope.ai FAQ
What is the difference between Google AI Mode and Penelope.ai?
Google AI Mode: Conversational AI search mode inside Google Search. Penelope.ai: Automated checks that a manuscript meets a journal's requirements. Both are research & search tools.
Is Google AI Mode or Penelope.ai cheaper?
Google AI Mode is completely free, while Penelope.ai is paid.
Do Google AI Mode and Penelope.ai have free plans?
Google AI Mode: Yes, fully free. Penelope.ai: No.
Who makes Google AI Mode?
Google AI Mode is made by Google, based in United States.
Who makes Penelope.ai?
Penelope.ai is made by Penelope.ai.
Which should I choose, Google AI Mode or Penelope.ai?
Choose Google AI Mode if you value free and widely available and draws on google's index. Choose Penelope.ai if you value results are explained, not a black box and each journal can set its own rules.