According to Mars Finance, on February 13th, OpenAI released a research preview of GPT-5.3-Codex-Spark, a streamlined version of GPT-5.3-Codex. It is OpenAI's first model specifically designed for real-time coding, supporting targeted editing, logic reshaping, or interface optimization, with immediate results. Optimized for ultra-low latency hardware, Codex-Spark achieves near-instantaneous response—delivering over 1000 tokens per second—while still handling real-world coding tasks.
OpenAI releases GPT-5.3-Codex-Spark research preview.
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