Thing is, it has tool integration. Half of the time it uses python to calculate it. If it uses a tool, that means it writes a string that isn't shown to the user, which runs the tool, and tool results are appended to the stream.
What is curious is that instead of request for precision causing it to use the tool (or just any request to do math), and then presence of the tool tokens causing it to claim that a tool was used, the requests for precision cause it to claim that a tool was used, directly.
Also, all of it is highly unnatural texts, so it is either coming from fine tuning or from training data contamination.
The craziest thing about leaked prompts is that they reveal the developers of these tools to be complete AI pilled morons. How in the fuck would it know if it can or can't do it "in its brain" lol.
edit: and of course, simultaneously, their equally idiotic fanboys go "how stupid of you to expect it to use a calculating tool when it said it used a calculating tool" any time you have some concrete demonstration of it sucking ass, while simultaneously the same kind of people are lauding the genius of system prompts half of which are asking it to meta-reason.