OpenAI launches GPT-5.3-Codex-Spark on Cerebras chips — marks AI giants first production deployment away from Nvidia

OpenAI launches GPT-5.3-Codex-Spark on Cerebras chips — marks AI giants first production deployment away from Nvidia The company claims it can exceed 1,000 tokens per second under the right configuration, while also defaulting to minimal edits, and will not automatically execute tests unless instructed. The hardware behind all this is Cerebras’ third-generation Wafer Scale Engine. Unlike conventional GPU clusters built from many smaller chips connected over high-speed interconnects, Cerebras uses a single wafer-scale processor with hundreds of thousands of AI cores and large pools of on-chip memory OpenAI said last month that it had signed a deal to deploy Cerebras hardware for low-latency inference, and that it plans to bring 750 megawatts of Cerebras-backed compute online in phases through 2028