OpenAI launches GPT-5.3-Codex-Spark for ultra-fast real-time coding

On Thursday, OpenAI announced GPT-5.3-Codex-Spark, a lightweight version of its agentic coding tool Codex, which the company launched earlier this month. Powered by Cerebras’ Wafer Scale Engine 3 chip, Spark enables faster inference as the first milestone in OpenAI’s multi-year partnership with Cerebras. The original GPT-5.3-Codex model serves longer, heavier tasks requiring deeper reasoning and […]