GPT-5.4 Community Reception: Knowledge-Hallucination Paradox + API Pricing Revolt

r/singularity·medium signal

GPT-5.4 community reception is split. On knowledge benchmarks (SimpleBench), it scores significantly better than GPT-5.2 Pro. But practitioners report it's "one of the least trustworthy — knows a lot but makes stuff up when it doesn't." API pricing for 5.4 Pro draws sharp criticism: "an order of magnitude more than Sonnet — who the hell is going to pay?" (240up, 64 comments). The hallucination-versus-knowledge tradeoff and pricing backlash are the dominant practitioner signals.