OpenAI Codex CLI vs Theia IDE vs GitHub Copilot CLI vs OpenCode

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

Your tool
OpenAI Codex CLI
vs
Competitor 1
TITheia IDE
Competitor 2
GitHub Copilot CLI
Competitor 3
OpenCode
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 TITheia IDE
theia-ide.org
An open-source IDE that puts AI at the center while giving you complete control over how it works
Make main Remove
Competitor GitHub Copilot CLI
github.com
It reads, writes and runs code, works directly with your issues and pull requests, and carries a task from planning to merged code.
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
Traffic estimated monthly website traffic
Monthly visits
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35.3Kvisits/mo
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MoM change
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▼ 8.1%
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6-month growth
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-40.2%
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Global rank web
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#929,571
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Avg. last 3 months
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41.1K
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Bounce rate lower is better
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41%
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Pages / visit
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1.7
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Visit duration
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27s
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Traffic sources
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OpenAI Codex CLITheia IDEGitHub Copilot CLIOpenCode
014.8K29.5K44.3K59.1KTheia IDE · 54.7KTheia IDE · 58.4KTheia IDE · 59.1KTheia IDE · 49.4KTheia IDE · 47.5KTheia IDE · 49.5KTheia IDE · 38.4KTheia IDE · 35.3K10K100KTheia IDE · 54.7KTheia IDE · 58.4KTheia IDE · 59.1KTheia IDE · 49.4KTheia IDE · 47.5KTheia IDE · 49.5KTheia IDE · 38.4KTheia IDE · 35.3KDec '25Jan '26FebMarAprMayJunJul
Pricing
Model
Paid
Free
Free
Free
Starting price
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Free
Free
Free
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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Capabilities input → output
Input
CodeImagesText
CodeText
CodeText
CodeText
Output
Code
Code
Code
Code
Skill level
Advanced
Advanced
Intermediate
Advanced
Categories
Development & CodeAI Coding Assistant
Development & CodeAI Coding AssistantAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Coding Assistant
Development & CodeAI Coding Assistant
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
2
5
4
3
Coding
Developer tools
Development
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Agents
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Agent creation
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GitHub management
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Vs code
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Community on aitoolstime
Rating
no ratings yet
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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.