> it's that the system itself decides how to reason based on the nature of the problem it faces, given the model's world model.

do you even know how adaptive reasoning works?

Godspeed to you in your efforts to contribute productively to Hacker News threads.

	▲	simianwords 4 hours ago \| parent [-]
		> For the first time, GPT‑5.1 Instant can use adaptive reasoning to decide when to think before responding to more challenging questions, resulting in more thorough and accurate answers, while still responding quickly. This is reflected in significant improvements on math and coding evaluations like AIME 2025 and Codeforces. https://openai.com/index/gpt-5-1/ It says literally the thing you wanted from system 2. Its almost exactly that. This is what you said btw: "it's that the system itself decides how to reason based on the nature of the problem it faces"