GitHub Copilot CLI vs OpenAI Codex CLI vs Semantic Kernel

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

Your tool
GitHub Copilot CLI
vs
Competitor 1
OpenAI Codex CLI
Competitor 2
Semantic Kernel
Competitor 3
Compare
3 tools · best value per row highlighted
Your tool 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.
Competitor OpenAI Codex CLI
developers.openai.com
OpenAI Codex CLI brings the Codex coding agent to the terminal and to scripts.
Competitor Semantic Kernel
learn.microsoft.com
Semantic Kernel is a lightweight, open-source development kit from Microsoft for building AI agents and adding AI models to existing C#, Python or Java codebases.
Traffic estimated monthly website traffic
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Starting price
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Plans
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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
CodeText
CodeImagesText
CodeText
Output
Code
Code
Apps
Skill level
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Categories
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
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Developer tools
Coding
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Agents
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Agent creation
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LLM development
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GitHub management
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Community on aitoolstime
Rating
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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.