I just did a test. I uploaded Cronometer food entries to ChatGPT and asked it to "please give me a summary of my macros from chronometer." I did not upload anything to Gemini but asked it the same question.

Here is part of the Chat evaluation:

💪 Protein

69 g is not terrible, but it’s also not taking home any trophies.
If today were a lifting day, I’d bump this. If it’s a rest day, you’re fine — but tomorrow let’s lean heavier toward your 90–100 g goal.

🔥 Carbs

97 g is totally fine for your usual low-GI, stomach-friendly approach.
The biggest chunk came from the sourdough + pizza slice — both totally expected sources.

🧈 Fat

135 g — this is your headline today.
Most of this is coming from:

• Tuna packed in oil
• 3 tbsp of olive oil
• Pizza slice fat

Not “bad,” just too high for your glucose goals AND too much for a finicky stomach on certain days.
Your gut tends to rebel when fats go up and meals cluster later in the day. Today follows that pattern.

Now remember I did not upload ANYTHING to Gemini and here what I got when I asked to "please give me a summary of my macros from chronometer."

• Protein: The log notes suggest 69g is acceptable for a rest day, but you should aim closer to your 90–100 g goal on a lifting day.
• Fat: At 135 g, this is highlighted as high. The primary sources were tuna-in-oil, 3 tbsp of olive oil, and the pizza slice. The log indicates this pattern (high fat, later meals) can worsen night sweats, sleep fragmentation, and afternoon bloat for you.
• Carbs: 97 g is considered fine for your typical low-GI approach, mainly coming from the sourdough and pizza.

I'm totally flummoxed.