OpenAI: GPT-4o hay OpenAI: GPT-5.1-Codex-Max re hon?
OpenAI: GPT-4o re hon OpenAI: GPT-5.1-Codex-Max ($0.362 / 1M tokens input / $1.45 / 1M tokens output so voi $0.236 / 1M tokens input / $1.88 / 1M tokens output). Chi phi thuc te phu thuoc vao ty le token input va output cua ban, vi vay hay uoc tinh bang may tinh gia dua tren traffic that.