[Model BadCase]: Korean responses mixed with Chinese characters (한자) - cannot output pure Korean

[yeni-shin]

Basic Information - Models Used

MiniMax M2.7

Information about environment and deployment

Basic Information

• Models Used: MiniMax-M2.7 (and MiniMax-M2.5)
• Information about environment and deployment: Official API
• Channel: OpenClaw (Telegram bot)

Description

When using MiniMax-M2 for Korean language tasks, the model frequently mixes Chinese characters (한자/漢字) into Korean responses despite explicit instructions to output Korean only.

Steps to reproduce

1. Set system/user prompt: "한국어만 사용" / "Korean only"
2. Request any response in Korean (e.g., weather summary, simple explanation)
3. Observe Chinese characters (한자) appearing in the output

Expected behavior

• All output should be in Korean only
• No Chinese characters (漢字) or Japanese characters should appear
• Example: "컴퓨터" not "電腦", "자동차" not "汽車"

Actual behavior

• Model outputs Korean text mixed with Chinese characters
• Example recent output: "설정 파일을 확인했어요. 현재 SOUL.md를 시스템 프롬프트로 사용하고 있는데, 여기에 규칙을 추가하겠습니다."
  • Words like "설정", "파일", "확인" sometimes rendered with embedded Chinese characters
• The issue persists despite explicit system prompt instructions

Severity

• High for Korean-speaking users - makes responses difficult to read
• Affects all Korean language use cases

Related reports

• Similar report on X (Twitter): A Korean user reported the same issue with MiniMax-M2.5
• GitHub Issue [Model BadCase]: The model always confuses between Chinese and English Punctuations #55: Chinese/English punctuation confusion suggests broader character handling issues

Additional context

This appears to be a fundamental limitation in how the model handles multilingual (Korean + Chinese) text generation. Users requesting Korean-only output cannot achieve it reliably.

Description

Steps to reproduce

The bug can be reproduced with the following steps:

Expected behavior

Error logs

Paste the related screenshots here

[hendricius]

Having the same issue.

[programator-strategic]

Same with Spanish

[paichato]

Same with english and portuguese

[jihwanahn]

Similar issue here but not only Chinese, it keeps replying with Russian, German, English.

[ximiximi423]

Thanks for your feedback. Could you please share the specific request and response content (or the dialogue link) to help us investigate?

[sigolyori]

Minimax M-2.7 still has the problem of Korean output being mixed with Chinese.