GitHub Copilot VS OpenAI Codex CLI
Compare GitHub Copilot VS OpenAI Codex CLI and see what are their differences
AI agents that spec, build, test, and ship code โ with voice chat, deep GitHub integration, and zero LLM markup.
sponsored
GitHub Copilot
Cursor
Claude Code
Windsurf Editor
replit
Codeium
Tabnine
Codex by OpenAI
OpenAI Codex CLI
Claude Code
Cursor
Ghostty
warp by spolu
aider
Google Antigravity
Zed
Trained on billions of lines of public code, GitHub Copilot puts the knowledge you need at your fingertips, saving you time and helping you stay focused.
GitHub Copilot OpenAI Codex CLIIt definitely increases my productivity.
Based on our record, GitHub Copilot should be more popular than OpenAI Codex CLI. It has been mentiond 388 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Snagly is a free, MIT-licensed set of 30 skills for AI coding agents โ GitHub Copilot, Claude Code, Cursor, Codex and 70+ others โ that turn "an AI that can drive a browser" into "an AI that tests like a QA professional." A skill, if you haven't met them yet, is a reusable instruction set that teaches the agent a specific working method โ when to use it, what rigor it requires, what evidence to capture, and what... - Source: dev.to / 27 days ago
Where llms.txt genuinely gets read is a different layer: coding and agent tooling โ Cursor, Claude Code, GitHub Copilot, Windsurf โ pulling a documentation site's pages with less token waste, plus emerging agent protocols like OpenAI's Agents SDK. That's real, and it's growing fast. - Source: dev.to / 2 months ago
You need an active GitHub Copilot subscription. Plans are available at individual, business, and enterprise tiers at github.com/features/copilot. Once active, all tools use your GitHub account credentials. - Source: dev.to / 3 months ago
For over a decade PhpStorm (starting in my WordPress era) and later WebStorm have been my main IDEs for web development. So when GitHub Copilot launched, it was a natural choice to try it out in WebStorm. It was one of the first AI coding tools I used, and it had a big impact on how I thought about AI-assisted coding. - Source: dev.to / 3 months ago
Before we get into it, there are some things about AI usage worth addressing. I've had my fair share of scepticism in the past, but recent model releases have made it increasingly difficult to argue that AI isn't a viable tool for the majority of workstreams, including building user interfaces. Most large language models are trained on public data scraped from the internet, which means your internal design system... - Source: dev.to / 3 months ago
Since when? https://learn.chatgpt.com/docs/codex/cli https://github.com/openai/codex Looks like it's still a more-or-less-open-source product called Codex CLI. FWIW, there have been issues with various versions of ChatGPT not knowing what Codex is -- at least in the (IIRC) GPT-5.3 timeframe, there were serious issues with the knowledge cutoff. - Source: Hacker News / 12 days ago
Codex is open source: https://github.com/openai/codex. - Source: Hacker News / 29 days ago
One of the first things I asked Pi was whether it could show my OpenAI usage limits in its status line. It replied that it should be possible with the Codex CLI. - Source: dev.to / about 1 month ago
>kimi has been particularly shameless in copying codex 1:1, wow. Isnยดt codex MIT https://github.com/openai/codex ? - Source: Hacker News / about 1 month ago
> a huge value is the [โฆ] Codex harness Codex. There are open source implementations Like Codex https://github.com/openai/codex. - Source: Hacker News / about 1 month ago
Cursor - The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
Claude Code - Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebaseโno more context switching, just breakthrough results.
Windsurf Editor - Tomorrow's editor, today. Windsurf Editor is the first AI agent-powered IDE that keeps developers in the flow. Available today on Mac, Windows, and Linux.
Ghostty - A fast, feature-rich, and cross-platform terminal emulator
replit - Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages โ without spending a second on setup.
warp by spolu - Secure and simple terminal sharing