Reasoning effort defaults across the GPT-5.x family

GPT-5.x models are reasoning models , and as such, you can set the reasoning effort that they should make when addressing your prompts. Reasoning is a big part of what makes LLMs smarter or faster, and the reasoning effort is a huge lever to improve benchmark results and latency figures. However, unless you've been monitoring your LLM applications closely, you may not have found a reason to play…