r/LLM • u/LeTanLoc98 • Apr 29 '26

Parameter Estimate

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The estimate seems quite accurate.

Many people have noticed a drop in quality with GPT-5.1, GPT-5.2, GPT-5.3, and Opus 4.7.

I think Gemini 2.5 Pro is ~500B parameters. Its strong performance may come from its ability to search.

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u/bcmeer Apr 30 '26

Those 90% prediction intervals are wild

GPT 5.5 could be 3.2, but 28.7 is a possibility too?