Mashable

OpenAI releases GPT-5.3-Codex, a coding model that helped build itself

Credit: Joseph Maldonado / Mashable Composite by Rene Ramos. OpenAI released a new coding model today, GPT-5.3-Codex. The company said the new model has improved "reasoning and professional knowledge capabilities" and will operate 25 percent faster than ...
Ars Technica

With GPT-5.3-Codex, OpenAI pitches Codex for more than just writing code

Today, OpenAI announced GPT-5.3-Codex, a new version of its frontier coding model that will be available via the command line, IDE extension, web interface, and the new macOS desktop app. (No API access yet, but it’s coming.) GPT-5.3-Codex outperforms ...
Hosted on MSN

OpenAI's new Spark model codes 15x faster than GPT-5.3-Codex - but there's a catch

OpenAI targets "conversational" coding, not slow batch-style agents. Big latency wins: 80% faster roundtrip, 50% faster time-to-first-token. Runs on Cerebras WSE-3 chips for a latency-first Codex serving tier. The Codex team at OpenAI is on fire.
Visual Studio Magazine

Shortly After Debut, GPT-5.3-codex Dominates Microsoft Foundry AI Model Leaderboard

GPT-5.3-Codex moved to No. 1 in Quality on the Microsoft Foundry AI Model Leaderboard soon after release, while a cross-metric 'podium' scoring method put GPT-5-Nano on top overall for efficiency.
Android

OpenAI Releases GPT-5.3-Codex: The AI Model That Helped Build Itself

In a synchronized industry battle, OpenAI launched GPT-5.3-Codex just minutes after Anthropic released Claude Opus 4.6. The new model is 25% faster and was instrumental in building itself, helping OpenAI engineers debug and deploy the final version.