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OpenAI Launches Faster Codex Model Powered by Cerebras' Dedicated AI Chip

OpenAI released GPT-5.3-Codex-Spark, a lightweight version of its coding tool designed for faster inference and real-time collaboration. The model is powered by Cerebras' Wafer Scale Engine 3 chip, marking the first milestone in their $10 billion partnership announced last month. This represents a significant integration of specialized hardware into OpenAI's infrastructure to enable ultra-low latency AI responses.