For some godawful reason, Apple Maps voice directions assume that you also understand what it omits. So if it says "turn right in 500 meters" "250 meters" and then you stop at an intersection after 150 meters and it says "turn right", it expects you to understand that it doesn't mean the immediate right at the intersection, but the next one [because you still haven't driven the full 250m]. It is nuts and I have no clue how that has ever gotten past testing.
What it should do is say nothing until I have to turn, or say "turn right in 100 meters" "turn right".
They also clearly show which voices can do street names (which is hugely helpful). For some reason the Australian and British accented voices feel more polite than the Americans
For example for voice ChatGPT still uses a quantized gpt40 non-reasoning model that hallucinates pretty frequently. It also doesn’t do much automatic search for updated information and fact checking.
I usually don’t find I need high, usually DeepSeek v4 with medium reasoning is sufficient.
However if it’s important chat like brainstorming on complex topics I sometimes bump it up.
OpenAI has a new voice api that supports adjustable reasoning, but ChatGpt is not using it currently.