OpenAI Debuts First Speed-Focused Model: GPT‑5.3‑Codex‑Spark
Discover GPT-5.3-Codex Spark, OpenAI's first ultra high speed model designed for real time programming.
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Recently, GPT-5.3-Codex-Spark has officially been released!
This time, no big principles—just one word: fast.
How fast exactly? Check out the official demo:
It’s the “Flash” of the GPT-5.3 family.





