How did ChatGPT 5.3 Codex contribute to its own development?

ChatGPT 5.3 Codex was used to debug its own training, manage its deployment, and diagnose test results, suggesting refinements and improvements.

What are the performance improvements of ChatGPT 5.3 Codex?

The new Codex 5.3 runs 25% faster than previous versions and uses fewer resources.

What is OpenAI's future vision for AI researchers?

OpenAI aims to develop AI-powered researchers to help improve its own models, with goals for an AI research intern and an automated AI researcher.

Home / Technology / AI Built Itself: ChatGPT 5.3 Codex Revolutionizes Coding

AI Built Itself: ChatGPT 5.3 Codex Revolutionizes Coding

6 Feb

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Summary

ChatGPT 5.3 Codex was instrumental in its own creation.
The new model improves coding efficiency by 25%.
OpenAI aims for AI researchers to enhance model development.

AI Built Itself: ChatGPT 5.3 Codex Revolutionizes Coding

OpenAI has unveiled its latest model, ChatGPT 5.3 Codex, specifically engineered to empower developers and coders with tools for accelerated development. Remarkably, this new version was instrumental in its own creation, with early iterations used to debug training, manage deployment, and analyze test results.

The GPT 5.3 Codex suggested crucial improvements throughout the development process, significantly speeding up research and issue resolution. OpenAI reports that the new Codex 5.3 operates 25% faster than its predecessors while consuming fewer resources, becoming available through paid ChatGPT plans with API access soon.

This advancement aligns with OpenAI CEO Sam Altman's vision of employing AI-powered researchers to refine existing models. Altman has previously stated goals to develop an AI research intern by September 2026 and a fully automated AI researcher by March 2028.

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