OpenAI Codex CLI vs llama.cpp vs Gemini CLI vs GitHub Copilot CLI

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

Your tool
OpenAI Codex CLI
vs
Competitor 1
llama.cpp
Competitor 2
Gemini CLI
Competitor 3
GitHub Copilot CLI
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 llama.cpp
github.com
llama.cpp is an open-source inference engine that runs large language models and vision-language models on local hardware or in the cloud with minimal setup.
Make main Remove
Competitor Gemini CLI
github.com
It can query and edit large codebases, generate new apps from PDFs, images, or sketches using multimodal input, and debug problems when you describe them in plain language.
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
Traffic estimated monthly website traffic
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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 (personal Google account) Free
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Capabilities input → output
Input
CodeImagesText
ImagesText
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Output
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Code
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Skill level
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Categories
Development & CodeAI Coding Assistant
Development & CodeAI APIAI Developer Tools
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Coding Assistant
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
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Developer tools
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Community on aitoolstime
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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.