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Is The New OpenAI Model Actually THAT Fast?

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thumb_up 318 comment 6 2026 6 months ago
OpenAI just dropped GPT-5.3-Codex-Spark that's supposed to be just as good as Codex but faster. Thanks to a partnership with Cerebras (the chip makers), this model is optimized to build quickly. I tested it live with a "Vampire Survivors" style prompt and in under a minute, I had a playable game called "Nocturne Survivors" with functioning XP, leveling, and upgrade systems. But right now it's only on the $200/mo Pro plan. #AI #AInews #openai #chatgpt #vibecoding