kitio.aiGitBook vs Fluid Topics
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. GitBook starts at $65/mo and Fluid Topics starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- GitBook Agent for editing docs
- Embeddable AI assistant
- AI search answers
- Auto-updating translations
- Custom domains and analytics
- AI search
- Generative answers
- Documentation portal designer
- In-product help
- Helpdesk integration
- Content analytics
| Feature | GitBook | Fluid Topics |
|---|---|---|
| Best for | Docs platform with an AI agent for writers and an AI assistant for readers | Product knowledge platform with AI search and generative answers |
| Category | Productivity | Productivity |
| Pricing model | Freemium | Paid |
| Starting price | $65/mo | See pricing page |
| Free plan | Yes | No |
| Made by | GitBook | Fluid Topics |
| Based in | – | France |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
GitBook starts at $65/mo and Fluid Topics starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Free
Free
- Public branded docs site
- 1 user
- GitBook Agent, 10 messages a week
Essential
$65/mo
- Per site
- $20 of AI credits included
- AI Assistant Ask
- Custom domain and analytics
Ultimate
$249/mo
- Per site
- $100 of AI credits included
- AI Assistant Chat
Enterprise
Contact sales
- SAML SSO
- White-glove migration
- Dedicated support
Prices in USD, checked Nov 5, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
GitBook
- AI help for both writers and readers
- Translations update with the source
- Free plan for public docs
- AI features consume paid credits
- Each extra user costs $12 a month
- Full Assistant chat only on Ultimate
Fluid Topics
- One source for all product content
- Answers grounded in your documentation
- Analytics on content use
- No public pricing
- Best for large documentation sets
- Setup needs content structuring
Which one should you choose?
Choose GitBook if you want:
- AI help for both writers and readers
- Translations update with the source
- Free plan for public docs
Watch out: ai features consume paid credits.
Choose Fluid Topics if you want:
- One source for all product content
- Answers grounded in your documentation
- Analytics on content use
Watch out: no public pricing.
GitBook vs Fluid Topics FAQ
What is the difference between GitBook and Fluid Topics?
GitBook: Docs platform with an AI agent for writers and an AI assistant for readers. Fluid Topics: Product knowledge platform with AI search and generative answers. Both are productivity tools.
Is GitBook or Fluid Topics cheaper?
GitBook starts at $65/mo and Fluid Topics starts at See pricing page. Check both pricing pages for current plans.
Do GitBook and Fluid Topics have free plans?
GitBook: Yes. Fluid Topics: No.
Who makes GitBook?
GitBook is made by GitBook.
Who makes Fluid Topics?
Fluid Topics is made by Fluid Topics, based in France.
Which should I choose, GitBook or Fluid Topics?
Choose GitBook if you value ai help for both writers and readers and translations update with the source. Choose Fluid Topics if you value one source for all product content and answers grounded in your documentation.