OpenAI debuts GPT 5.5, Nvidia gave early access to 10,000 employees through Codex

Codex now runs on GPT-5.5 hosted on Nvidia's GB200 NVL72 rack-scale systems. Nvidia says the systems deliver 35x lower cost per million tokens and 50x higher token output per second per megawatt than prior-generation systems, economics it argues make frontier-model inference viable at enterprise scale. Read Entire Article