OpenAI Codex CLI vs Knowledge Plane vs OpenCode vs GitHub Copilot

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

Your tool
OpenAI Codex CLI
vs
Competitor 1
Knowledge Plane
Competitor 2
OpenCode
Competitor 3
GitHub Copilot
Compare
4 tools · best value per row highlighted
Your tool OpenAI Codex CLI
developers.openai.com
OpenAI Codex CLI brings the Codex coding agent to the terminal and to scripts.
Remove
Competitor Knowledge Plane
knowledgeplane.io
Engineering teams watch their AI tools hallucinate outdated project details
Make main Remove
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.
Make main Remove
Competitor GitHub Copilot
github.com
Your AI pair programmer that actually knows the codebase
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
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637.9Mvisits/mo
MoM change
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▲ 3.7%
6-month growth
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+19.3%
Global rank web
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#49
Avg. last 3 months
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629.7M
Bounce rate lower is better
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0%
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36%
Pages / visit
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5.9
Visit duration
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6m 26s
Traffic sources
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● Direct 83% · ● Referral 15%
OpenAI Codex CLIKnowledge PlaneOpenCodeGitHub Copilot
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
Paid
Freemium
Free
Freemium
Starting price
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$19per month · free tier available
Free
$4per month · free tier available
Free tier
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Free trial
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API access
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Plans
GPT-6-Astra $10GPT-6.1-Sol $2GPT-6-Luna $0.10GPT-Live-1 $0.05/minute+1 more
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Free FreeTeam $4/moEnterprise $21/mo
Capabilities input → output
Input
CodeImagesText
CodeDocumentsText
CodeText
CodeText
Output
Code
Text
Code
Code
Skill level
Advanced
Intermediate
Advanced
Intermediate
Categories
Development & CodeAI Coding Assistant
Education & LearningAI Knowledge Management
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Code Review+1 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
2
7
3
4
Coding
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Developer tools
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Knowledge bases
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Knowledge graphs
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Agents
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Code reviews
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Knowledge
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Knowledge maps
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Knowledge sourcing
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Agent management
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Development
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Digital information management
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Knowledge exchange
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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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0
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2
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.