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Codex is the most powerful coding assistant

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Welcome, Prohumans.

We are going to talk about Codex and why its the most innovative and powerful AI coding assistant released by OpenAI.

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Codex can code, test, refactor, and review on its own

OpenAI just released Codex, a cloud-based coding agent now rolling out to ChatGPT Pro, Enterprise, and Team users. It’s the first step toward a new kind of engineering workflow where agents can work alongside you, or even while you sleep.

Here’s everything you need to know about Codex:

  • Codex can write features, answer codebase questions, fix bugs, and open pull requests all in its own cloud sandbox.

  • It’s powered by codex-1, a fine-tuned version of OpenAI’s o3 model, trained on real dev tasks with reinforcement learning.

  • Each task runs in isolation, preloaded with your repo, and commits only after passing tests and logging its steps.

  • You can guide Codex with AGENTS. md files think of them as documentation just for your agent.

  • Accuracy benchmarks show codex-1 outperforming previous models on both public and internal SWE tasks.

  • OpenAI engineers are already using Codex daily to handle background tasks, triage bugs, and unblock their teammates.

  • External testers like Cisco, Temporal, and Superhuman are integrating it into their real-world workflows.

Codex isn’t a demo it’s a shift. It won’t replace developers, but it will reshape how we work. If we get this right, agents like Codex could be the biggest boost to developer productivity since Git.

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Thanks for reading…

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