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[GH-ISSUE #12570] In Ollama v0.12.5, the deepseek-r1:8b model outputs are chaotic, and its reasoning capabilities have significantly degraded, showing a serious performance regression compared to v0.11.11. #70397

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opened 2026-05-04 21:25:26 -05:00 by GiteaMirror · 4 comments
GiteaMirror commented 2026-05-04 21:25:26 -05:00
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Originally created by @minghua-123 on GitHub (Oct 11, 2025).
Original GitHub issue: https://github.com/ollama/ollama/issues/12570

What is the issue?

For details, please see the follow-up to the closed issue. The new version does not fix the bug, and the new version 0.12.5 causes abnormal interruptions in replies (the issue occurs in both Chinese and English conversation environments).

@rick-github @jmorganca

Some problem records can be found here. https://github.com/ollama/ollama/issues/12569

Image

Relevant log output

OS

Windows

GPU

Nvidia

CPU

Intel

Ollama version

0.12.5

Originally created by @minghua-123 on GitHub (Oct 11, 2025). Original GitHub issue: https://github.com/ollama/ollama/issues/12570 ### What is the issue? For details, please see the follow-up to the closed issue. The new version does not fix the bug, and the new version 0.12.5 causes abnormal interruptions in replies (the issue occurs in both Chinese and English conversation environments). @rick-github @jmorganca Some problem records can be found here. https://github.com/ollama/ollama/issues/12569 <img width="1262" height="1155" alt="Image" src="https://github.com/user-attachments/assets/0351f083-7318-41f3-9afc-b0adae5fc05b" /> ### Relevant log output ```shell ``` ### OS Windows ### GPU Nvidia ### CPU Intel ### Ollama version 0.12.5
GiteaMirror added the bug label 2026-05-04 21:25:26 -05:00
GiteaMirror commented 2026-05-04 21:25:32 -05:00
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@jmorganca commented on GitHub (Oct 11, 2025):

@minghua-123 sorry about the issue. It's possible an old version of Ollama is running in the background. Do you know what ollama --version shows for you in a terminal?

<!-- gh-comment-id:3393529000 --> @jmorganca commented on GitHub (Oct 11, 2025): @minghua-123 sorry about the issue. It's possible an old version of Ollama is running in the background. Do you know what `ollama --version` shows for you in a terminal?
GiteaMirror commented 2026-05-04 21:25:34 -05:00
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@minghua-123 commented on GitHub (Oct 12, 2025):

对不起这个问题。旧版本的 Ollama 可能正在后台运行。你知道终端里有什么显示吗？ollama --version

PS C:\Users\wmh21> ollama --version
ollama version is 0.12.5

Image
<!-- gh-comment-id:3394063431 --> @minghua-123 commented on GitHub (Oct 12, 2025): > 对不起这个问题。旧版本的 Ollama 可能正在后台运行。你知道终端里有什么显示吗？`ollama --version` PS C:\Users\wmh21> ollama --version ollama version is 0.12.5 <img width="1709" height="629" alt="Image" src="https://github.com/user-attachments/assets/e9a4860e-e6e6-4e65-b358-7542070f142e" />
GiteaMirror commented 2026-05-04 21:25:37 -05:00
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@minghua-123 commented on GitHub (Oct 12, 2025):

对不起这个问题。旧版本的 Ollama 可能正在后台运行。你知道终端里有什么显示吗？ollama --version

@jmorganca
I am certain I am running the latest version. In Ollama version 0.12.5, when running deepseek-r1:8b, the model gets confused and gives incorrect answers when asked questions in Chinese.

Image Image
<!-- gh-comment-id:3394069808 --> @minghua-123 commented on GitHub (Oct 12, 2025): > 对不起这个问题。旧版本的 Ollama 可能正在后台运行。你知道终端里有什么显示吗？`ollama --version` @jmorganca I am certain I am running the latest version. In Ollama version 0.12.5, when running deepseek-r1:8b, the model gets confused and gives incorrect answers when asked questions in Chinese. <img width="1711" height="729" alt="Image" src="https://github.com/user-attachments/assets/5edc52bf-4670-4097-8e15-706ea7babe85" /> <img width="2030" height="2065" alt="Image" src="https://github.com/user-attachments/assets/d2456684-f0b8-4f44-adfa-688e388adc49" />
GiteaMirror commented 2026-05-04 21:25:41 -05:00
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@minghua-123 commented on GitHub (Oct 12, 2025):

The same applies when asking English questions, and it can be even more severe, leading to a prolonged, endless cycle of meaningless thought.

Image Some of the content is as follows Image
<!-- gh-comment-id:3394072265 --> @minghua-123 commented on GitHub (Oct 12, 2025): The same applies when asking English questions, and it can be even more severe, leading to a prolonged, endless cycle of meaningless thought. <img width="2030" height="657" alt="Image" src="https://github.com/user-attachments/assets/9d215654-92a3-4d98-bf74-3a06d1bfef15" /> Some of the content is as follows <img width="1703" height="1130" alt="Image" src="https://github.com/user-attachments/assets/9aefc3e1-c8c3-491a-83f3-a87156537a5a" />
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