Ex-OpenAI Staff Laments GPT-4.5's Unmatched User Experience

adonis_singh · x · 2026-08-26

Adonis Singh, a former OpenAI staff member, lamented that people forget how good GPT-4.5 felt to use, arguing that no current model comes close in terms of pure user experience. A quoted reply suggests GPT-4.5 likely exceeded 10 trillion parameters, explaining its rapid retirement due to high costs.

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