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Add function calling support to DeepSeek-V3.1 usage guide. #61

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simon-mo merged 2 commits into from
Sep 23, 2025
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Add function calling support to DeepSeek-V3.1 usage guide. #61

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Add function calling support to DeepSeek-V3.1 usage guide.
Evrard-Nil Sep 23, 2025
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simon-mo Sep 23, 2025
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11 changes: 11 additions & 0 deletions DeepSeek/DeepSeek-V3_1.md
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Expand Up @@ -26,6 +26,17 @@ vllm serve deepseek-ai/DeepSeek-V3.1 \
--served-model-name ds31
```

### Function calling

vLLM also supports calling user-defined functions. Make sure to run your DeepSeek-V3.1 models with the following arguments. The example file is included in the official container and can be downloaded [here](https://github.com/vllm-project/vllm/blob/main/examples/tool_chat_template_deepseekv31.jinja)

```bash
vllm serve ...
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medium

The vllm serve ... syntax is a bit ambiguous, and using ... on a separate line is unconventional. It would be clearer to show a more complete command that includes the model name, to indicate that these are additional arguments, similar to the previous example in the document.

Suggested change
vllm serve ...
vllm serve deepseek-ai/DeepSeek-V3.1 \

--enable-auto-tool-choice
--tool-call-parser deepseek_v31
--chat-template examples/tool_chat_template_deepseekv31.jinja
```

## Using the Model

### OpenAI Client Example
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