GitHub Copilot vs Glean vs OpenCode vs GitBook

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

Your tool
GitHub Copilot
vs
Competitor 1
Glean
Competitor 2
OpenCode
Competitor 3
GitBook
Compare
4 tools · best value per row highlighted
Your tool GitHub Copilot
github.com
Your AI pair programmer that actually knows the codebase
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Competitor Glean
glean.com
Glean is an enterprise AI platform that connects to company apps and data to provide search, an AI assistant and agents.
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Competitor OpenCode
opencode.ai
OpenCode is an open-source AI coding agent that helps developers write code in the terminal, an IDE or a desktop app.
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Competitor 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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Traffic estimated monthly website traffic
Monthly visits
637.9Mvisits/mo
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MoM change
▲ 3.7%
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6-month growth
+19.3%
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Global rank web
#49
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Avg. last 3 months
629.7M
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Bounce rate lower is better
36%
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Pages / visit
5.9
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Visit duration
6m 26s
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Traffic sources
● Direct 83% · ● Referral 15%
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GitHub CopilotGleanOpenCodeGitBook
0159.5M318.9M478.4M637.9MGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9M100M1BGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Freemium
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Free
Freemium
Starting price
$4per month · free tier available
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Free
$65per month · free tier available
Free tier
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Free trial
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API access
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Plans
Free FreeTeam $4/moEnterprise $21/mo
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Free FreeEssential $65/moUltimate $249/moEnterprise Custom
Capabilities input → output
Input
CodeText
DataDocumentsText
CodeText
CodeText
Output
Code
Text
Code
DocumentsText
Skill level
Intermediate
Intermediate
Advanced
Beginner-friendly
Categories
Development & CodeProductivity & OfficeAI AgentAI Code Review+1 more
Education & LearningProductivity & OfficeAI AgentAI Assistant+1 more
Development & CodeAI Coding Assistant
Development & CodeEducation & LearningAI Developer ToolsAI Knowledge Management
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
9
10
6
8
Agents
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Coding
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Knowledge
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Knowledge bases
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Agent management
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Developer tools
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Digital information management
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AI search
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Code autocompletion
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Agent creation
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Business productivity
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Code documentation
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Code reviews
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Coding in VS Code
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Vs code
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API docs
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Customer support chatbot
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Debugging
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Development
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Document creation
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Knowledge sourcing
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Local AI
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Model routing
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Self hosted
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Terminal
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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
0
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Reviews
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Prompts
2
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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.