Comment by aurareturn

Aren't hallucinations also heavily influenced by compute and memory capacity? IE. Companies can spend more time to verify results in an agentic format, spend more thinking tokens, and less quantization. All of these heavily depend on compute and memory but are proven to decrease hallucinations.

Maybe GPT 5.5 is heavily nerfed due to lack of compute, memory, and energy?

I agree that it's farfetched to conclude that bigger models have pleateued.