OpenAI launches a research preview of GPT-5.3-Codex-Spark, a smaller version of GPT-5.3-Codex that it claims generates code 15 times faster, for Pro users

OpenAI's new Spark model codes 15x faster than GPT-5.3-Codex - but there's a catch | ZDNET - Featured Image

TLDR

OpenAI's new GPT-5.3-Codex-Spark model offers 15 times faster coding responses compared to GPT-5.3-Codex but with some trade-offs in accuracy and security.