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[GH-ISSUE #10796] Choosing Between No Reasoning and Reasoning Mode #7088

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opened 2026-04-12 19:01:44 -05:00 by GiteaMirror · 2 comments
GiteaMirror commented 2026-04-12 19:01:44 -05:00
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Originally created by @20246688 on GitHub (May 21, 2025).
Original GitHub issue: https://github.com/ollama/ollama/issues/10796

Hello, after I download the Qwen3 model, how do I use its hybrid reasoning on Ollama? Like, how do I choose between not reasoning or doing reasoning?

Originally created by @20246688 on GitHub (May 21, 2025). Original GitHub issue: https://github.com/ollama/ollama/issues/10796 Hello, after I download the Qwen3 model, how do I use its hybrid reasoning on Ollama? Like, how do I choose between not reasoning or doing reasoning?
GiteaMirror added the question label 2026-04-12 19:01:44 -05:00
GiteaMirror commented 2026-04-12 19:01:45 -05:00
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@rick-github commented on GitHub (May 21, 2025):

Add /nothink to the user prompt or system prompt to disable thinking, and /think to re-enable it.

$ ollama run qwen3
>>> hello
<think>
Okay, the user just said "hello". I need to respond appropriately. Since this is a friendly 
greeting, I should acknowledge it with a warm and welcoming message. I'll make sure to keep the 
tone positive and open for further conversation. Let me check if there's anything specific they 
might need, but since it's just a greeting, a simple reply should suffice. Maybe add an emoji to 
keep it friendly. Alright, time to respond.
</think>

Hello! 😊 How can I assist you today? I'm here to help with any questions or tasks you might have!

>>> hello /nothink
<think>

</think>

Hello again! 😊 How can I assist you today? I'm here to help with any questions or tasks you 
might have!

>>> hello         
<think>

</think>

Hello! 😊 How can I assist you today? I'm here to help with any questions or tasks you might have!

>>> hello /think
<think>
Okay, the user just said "hello" again. They've been greeting me multiple times, so maybe they're 
testing how I respond or just being friendly. I should keep the tone cheerful and open. Let me 
make sure to acknowledge their greeting and offer help. Maybe add an emoji to keep it friendly. 
Also, check if there's anything specific they need. Since they've said hello a few times, perhaps 
they want to start a conversation or have a question. I should stay welcoming and ready to 
assist. Alright, respond with a friendly greeting and ask how I can help.
</think>

Hello again! 😊 How can I assist you today? I'm here to help with any questions or tasks you 
might have!

There is a pending PR (https://github.com/ollama/ollama/pull/10584) which will make this easier but /nothink is the only mechanism at the moment.

<!-- gh-comment-id:2897404892 --> @rick-github commented on GitHub (May 21, 2025): Add `/nothink` to the user prompt or system prompt to disable thinking, and /think to re-enable it. ```console $ ollama run qwen3 >>> hello <think> Okay, the user just said "hello". I need to respond appropriately. Since this is a friendly greeting, I should acknowledge it with a warm and welcoming message. I'll make sure to keep the tone positive and open for further conversation. Let me check if there's anything specific they might need, but since it's just a greeting, a simple reply should suffice. Maybe add an emoji to keep it friendly. Alright, time to respond. </think> Hello! 😊 How can I assist you today? I'm here to help with any questions or tasks you might have! >>> hello /nothink <think> </think> Hello again! 😊 How can I assist you today? I'm here to help with any questions or tasks you might have! >>> hello <think> </think> Hello! 😊 How can I assist you today? I'm here to help with any questions or tasks you might have! >>> hello /think <think> Okay, the user just said "hello" again. They've been greeting me multiple times, so maybe they're testing how I respond or just being friendly. I should keep the tone cheerful and open. Let me make sure to acknowledge their greeting and offer help. Maybe add an emoji to keep it friendly. Also, check if there's anything specific they need. Since they've said hello a few times, perhaps they want to start a conversation or have a question. I should stay welcoming and ready to assist. Alright, respond with a friendly greeting and ask how I can help. </think> Hello again! 😊 How can I assist you today? I'm here to help with any questions or tasks you might have! ``` There is a pending PR (https://github.com/ollama/ollama/pull/10584) which will make this easier but `/nothink` is the only mechanism at the moment.
GiteaMirror commented 2026-04-12 19:01:46 -05:00
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@20246688 commented on GitHub (May 22, 2025):

Add to the user prompt or system prompt to disable thinking, and /think to re-enable it./nothink

$ ollama run qwen3

hello

Okay, the user just said "hello". I need to respond appropriately. Since this is a friendly
greeting, I should acknowledge it with a warm and welcoming message. I'll make sure to keep the
tone positive and open for further conversation. Let me check if there's anything specific they
might need, but since it's just a greeting, a simple reply should suffice. Maybe add an emoji to
keep it friendly. Alright, time to respond.

Hello! 😊 How can I assist you today? I'm here to help with any questions or tasks you might have!

hello /nothink

Hello again! 😊 How can I assist you today? I'm here to help with any questions or tasks you
might have!

hello

Hello! 😊 How can I assist you today? I'm here to help with any questions or tasks you might have!

hello /think

Okay, the user just said "hello" again. They've been greeting me multiple times, so maybe they're
testing how I respond or just being friendly. I should keep the tone cheerful and open. Let me
make sure to acknowledge their greeting and offer help. Maybe add an emoji to keep it friendly.
Also, check if there's anything specific they need. Since they've said hello a few times, perhaps
they want to start a conversation or have a question. I should stay welcoming and ready to
assist. Alright, respond with a friendly greeting and ask how I can help.

Hello again! 😊 How can I assist you today? I'm here to help with any questions or tasks you
might have!
There is a pending PR (#10584) which will make this easier but is the only mechanism at the moment./nothink

thanks a lot.

<!-- gh-comment-id:2899621222 --> @20246688 commented on GitHub (May 22, 2025): > Add to the user prompt or system prompt to disable thinking, and /think to re-enable it.`/nothink` > > $ ollama run qwen3 > >>> hello > <think> > Okay, the user just said "hello". I need to respond appropriately. Since this is a friendly > greeting, I should acknowledge it with a warm and welcoming message. I'll make sure to keep the > tone positive and open for further conversation. Let me check if there's anything specific they > might need, but since it's just a greeting, a simple reply should suffice. Maybe add an emoji to > keep it friendly. Alright, time to respond. > </think> > > Hello! 😊 How can I assist you today? I'm here to help with any questions or tasks you might have! > > >>> hello /nothink > <think> > > </think> > > Hello again! 😊 How can I assist you today? I'm here to help with any questions or tasks you > might have! > > >>> hello > <think> > > </think> > > Hello! 😊 How can I assist you today? I'm here to help with any questions or tasks you might have! > > >>> hello /think > <think> > Okay, the user just said "hello" again. They've been greeting me multiple times, so maybe they're > testing how I respond or just being friendly. I should keep the tone cheerful and open. Let me > make sure to acknowledge their greeting and offer help. Maybe add an emoji to keep it friendly. > Also, check if there's anything specific they need. Since they've said hello a few times, perhaps > they want to start a conversation or have a question. I should stay welcoming and ready to > assist. Alright, respond with a friendly greeting and ask how I can help. > </think> > > Hello again! 😊 How can I assist you today? I'm here to help with any questions or tasks you > might have! > There is a pending PR ([#10584](https://github.com/ollama/ollama/pull/10584)) which will make this easier but is the only mechanism at the moment.`/nothink` thanks a lot.
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