Proofreader API issue on punctuation fixes

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Önder Ceylan

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Oct 28, 2025, 7:33:31 PMOct 28
to Chrome Built-in AI Early Preview Program Discussions
Hey folks,

I've been experimenting with the model thru a new project and I noticed that API struggles with dealing issues on an example text like below:

"Teh editor forgets about the obvious mistake. she don't realize i left monday uncapitalized. I never added the question mark Can you help fix this sentence because it has no question mark On monday, i misplaced the umbrella at the office. We arrived to the station after the meeting even though we should have been at the station. We going to finish the report tomorrow but the draft missing words."

It tries to replace complete sentences with a punctuation or a single word. 

Best,
Önder
punctuation_fix.jpg

Thomas Steiner

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Oct 29, 2025, 1:40:17 AMOct 29
to Önder Ceylan, Kenji Baheux, Chrome Built-in AI Early Preview Program Discussions
Hi Önder,

Thank you for this quality feedback, Önder. @Kenji Baheux, is this on your radar already? Shall Önder file a bug or fill the survey (https://docs.google.com/forms/d/e/1FAIpQLScO-jms9d8Mm6dTIY8jeeDjoTJ5esFJDFEnWeoglBvvmCZPcw/viewform, but it's not for the Proofreader API).

Cheers,
Tom

Thomas Steiner, PhD—Developer Relations Engineer (blog.tomayac.comtoot.cafe/@tomayac)

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----- BEGIN PGP SIGNATURE -----
Version: GnuPG v2.4.8 (GNU/Linux)

iFy0uwAntT0bE3xtRa5AfeCheCkthAtTh3reSabiGbl0ck
0fjumBl3DCharaCTersAttH3b0ttom.xKcd.cOm/1181.
----- END PGP SIGNATURE -----

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Kenji Baheux

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Oct 31, 2025, 1:39:09 AMOct 31
to Önder Ceylan, Chrome Built-in AI Early Preview Program Discussions, Thomas Steiner
Thanks for sharing.

It seems like it's because the model is confused by what looks like an instruction in the original text.
We should do better. I'll share that with the team.

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Kenji BAHEUX (my how-to)
Product Manager - Chrome
Google Japan
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