OpenAI Codex CLI vs OpenCode vs Knowee

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

Your tool
OpenAI Codex CLI
vs
Competitor 1
OpenCode
Competitor 2
Knowee
Competitor 3
Suggested competitors for OpenAI Codex CLI: Gemini CLI100% Qwen Code98% Visual Studio Code95% JetBrains AI Assistant95% GitHub Copilot CLI94% Kimi Code94% Google Antigravity93% Amp93%
Compare
3 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.
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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.
Make main Remove
Competitor Knowee
knowee.ai
Knowee is an academic writing and homework assistant for students.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
—
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211.3Mvisits/mo
MoM change
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▲ 2.3%
6-month growth
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+7.3%
Global rank web
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—
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Avg. last 3 months
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207M
Bounce rate lower is better
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56%
Pages / visit
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2.6
Visit duration
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1m 50s
Traffic sources
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● Direct 69% · ● Referral 29%
OpenAI Codex CLIOpenCodeKnowee
052.8M105.6M158.5M211.3MKnowee · 184.4MKnowee · 190.2MKnowee · 193.2MKnowee · 179.1MKnowee · 196.9MKnowee · 199.7MKnowee · 211MKnowee · 203MKnowee · 206.6MKnowee · 211.3M100M1BKnowee · 184.4MKnowee · 190.2MKnowee · 193.2MKnowee · 179.1MKnowee · 196.9MKnowee · 199.7MKnowee · 211MKnowee · 203MKnowee · 206.6MKnowee · 211.3MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Paid
Free
Freemium
Starting price
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Free
$10per month · free tier available
Free tier
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Free trial
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–
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API access
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–
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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 FreePro $10/mo
Capabilities input → output
Input
CodeImagesText
CodeText
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Output
Code
Code
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Skill level
Advanced
Advanced
Beginner-friendly
Categories
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Education & LearningProductivity & OfficeVideo EditingWriting & Content+6 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
4
6
10
Coding
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Agents
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Developer tools
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Academic writing
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Essay writing
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Homework assistance
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Math
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Math explanations
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Math problems
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Writing
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Writing outlines
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Development
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Education
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Local AI
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Math calculator
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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
Upvotes
▲ 0
▲ 0
▲ 0
Saves
0
0
0
Reviews
0
0
0
Prompts
0
0
0
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.