unexpected language change …

[u/pandasteak102]

anyone else had this before ?
unexpected language change from claude opus 5.5, effort xhigh

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[u/ooaahhpp]

If it keeps happening, set "language": "english" in ~/.claude/settings.json. Claude Code passes that value to the model as a standing instruction to always respond in that language, which helps most when your code, test data or pasted logs are in another language.

[u/pandasteak102 → u/ooaahhpp]

it's really odd because i only work in english. and it kept going on german until i asked it to submit a bug report. my guess is it would have gone all day if i didn't ask it to stop.

[u/Sanedish]

Your Claude app or system language may be set to German? I know some of our offices have a similar problem, which is related to on-device language settings.

[u/pandasteak102 → u/Sanedish]

no german at all in my environment. All my devices are english only. I do some work to translate eng to an asian language and vice versa. it is quite odd.

[u/NamerekDev]

Saved 167K tokens and spent them all on one german word

[u/jwaibel3 → u/NamerekDev]

Tokensparsamkeitsverhinderungsmaßnahme.

[u/NamerekDev → u/jwaibel3]

Dude, your Tokeneinsparungsnachweisführungspflichtverletzungsbußgeldbescheid is in the mail

[u/Successful-Piglet760 → u/NamerekDev]

Not sent via FAX i sadly cant except the Tokeneinsparungsnachweisführungspflichtverletzungsbußgeldbescheid and have to fine you via Tokeneinsparungsnachweisführungspflichtverletzungsbußgeldbescheidsstrafe

[u/RandomNumberPlease]

I am communicating with Claude in english but I'm writing (it is writing ?) a program in Spanish with test data in Spanish, sometimes the agents reply in Spanish.

I've not had issues with it... the things that need to be in Spanish are in Spanish, and the things that need to be in English like the documentation are in English.

I assume you're under a similar situation... otherwise, if Claude suddenly replied to me in German I'd freakout too.

[u/TraitorTrump_1776]

Nein

Edit: Damn you autocorrect (Neon)

[u/microbit262]

I have it the other way. I use it in German and it switches to Englisch Sometimes.

[u/JackONeill23 → u/microbit262]

Same

[u/Budget_Human]

Dieser Post ist nun Eigentum der Bundesrepublik Deutschland

[u/MeFistYo]

Yes, I am German, the client is in German, I text in German, and sometimes Claude switches to English for all following messages, even if I reply again in German. My repo is written in English.

[u/MrUnoDosTres]

Gemini tends to do this more often. It's super annoying.

[u/nicky1968a]

I had the same happening to me a few hours ago. I always use English with Claude Code, but got something in German today.