GPT-5.3-Codex is about more than just writing code ...
Notably, GPT-5.3-Codex is the first OpenAI model that was used to create itself: The team used early versions of the model to debug its training, manage its deployment, and diagnose test results and ...
OpenAI has launched GPT-5.3 Codex offering a 25% speed increase over GPT-5.2 Codex, helping developers ship code faster.
OpenAI says one of its teams has built an app with zero human-written code. Every single line of code in this app has come from Codex AI agents, notes the company in a blog post, highlighting that ...
OpenAI is releasing GPT-5.3-Codex-Spark, a fast but imprecise coding model. It runs on a dedicated Cerebras chip. A first ...
GPT-3.5 Codex Spark offers 128,000-token context and ChatGPT Pro-only access, giving developers quicker real-time coding responses at lower cost.