GitBook vs Spell vs Question Base vs Knowledge Plane

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
GitBook
vs
Competitor 1
Spell
Competitor 2
Question Base
Competitor 3
Knowledge Plane
Compare
4 tools · best value per row highlighted
Your tool GitBook
gitbook.com
GitBook is a documentation and knowledge platform for publishing product docs that work for both people and AI.
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Competitor Spell
spellapp.com
A marketing manager needs to draft a product launch announcement
Make main Remove
Competitor Question Base
questionbase.com
Question Base is an AI answer agent that lives in Slack and responds to employee questions using your company's documentation, wikis and past conversations.
Make main Remove
Competitor Knowledge Plane
knowledgeplane.io
Engineering teams watch their AI tools hallucinate outdated project details
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
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22.8Kvisits/mo
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MoM change
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▼ 10.2%
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6-month growth
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+11.7%
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Global rank web
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#1,497,630
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Avg. last 3 months
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25K
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Bounce rate lower is better
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94%
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0%
Pages / visit
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1.1
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Visit duration
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44s
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Traffic sources
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● Referral 64% · ● Direct 36%
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GitBookSpellQuestion BaseKnowledge Plane
035.6K71.3K106.9K142.6KSpell · 142.6KSpell · 26.5KSpell · 20.4KSpell · 28.8KSpell · 34KSpell · 27KSpell · 25.4KSpell · 22.8K10K100K1MSpell · 142.6KSpell · 26.5KSpell · 20.4KSpell · 28.8KSpell · 34KSpell · 27KSpell · 25.4KSpell · 22.8KDec '25Jan '26FebMarAprMayJunJul
Pricing
Model
Freemium
Freemium
Paid
Freemium
Starting price
$65per month · free tier available
$20per month · free tier available
$5per month
$19per month · free tier available
Free tier
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Free trial
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API access
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Plans
Free FreeEssential $65/moUltimate $249/moEnterprise Custom
Free FreePro $20/moTeam $40/mo
Proof of Concept $1,000Annual Pro $6,000/yrEnterprise+ $20,000/yr
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Capabilities input → output
Input
CodeText
Text
DocumentsText
CodeDocumentsText
Output
DocumentsText
Documents
Text
Text
Skill level
Beginner-friendly
Beginner-friendly
Intermediate
Intermediate
Categories
Development & CodeEducation & LearningAI Developer ToolsAI Knowledge Management
Productivity & OfficeWriting & ContentAI Documents GeneratorAI Writing Assistants
Education & LearningAI Knowledge Management
Education & LearningAI Knowledge Management
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
8
8
6
12
Knowledge bases
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Knowledge
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Slack
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Code documentation
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Developer tools
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Digital information management
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Document writing
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Knowledge graphs
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Writing
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Agent memory
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Chatbots
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Collaborative documents
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Knowledge maps
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Knowledge optimization
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Knowledge sourcing
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API docs
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Academic writing
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Agents
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Business proposals
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Codebase q a
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Customer support chatbot
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Document creation
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Essay writing
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Knowledge exchange
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Press releases
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Proposal drafting
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
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Saves
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Reviews
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Prompts
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Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.