GPT-5.5 Instant Becomes ChatGPT's Default: Why the AI Model Race Has No Single Winner
OpenAI's decision to make GPT-5.5 Instant the default ChatGPT model isn't just a product update — it signals the end of the one-model-fits-all era and the rise of multi-model routing as the only rational AI architecture.
What Happened: OpenAI Switched ChatGPT's Default Model?
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