OpenAI Codex-Spark Achieves Ultra-Fast Coding Speeds on Cerebras Hardware

In a major shift in its hardware strategy, OpenAI launched GPT-5.3-Codex-Spark, its first production AI model deployed on Cerebras wafer-scale chips rather than traditional Nvidia GPUs. The new model offers delivers improved throughput and low-latency, enabling a real-time, interactive coding experience, says the company. By Sergio De Simone