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[GH-ISSUE #18] 如何在 langchain 中调用 DeepSeek-V2？ #16

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opened 2026-10-26 21:06:47 +00:00 by bsakaguchi · 4 comments
bsakaguchi commented 2026-10-26 21:06:47 +00:00
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Originally created by @soloice on GitHub (May 10, 2024).
Original GitHub issue: https://github.com/deepseek-ai/DeepSeek-V2/issues/18

Originally created by @soloice on GitHub (May 10, 2024). Original GitHub issue: https://github.com/deepseek-ai/DeepSeek-V2/issues/18
bsakaguchi commented 2026-10-26 21:06:49 +00:00
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@soloice commented on GitHub (May 10, 2024):

有些用户问到怎么在 langchain 里调用 DeepSeek-V2，由于我们的接口和 OpenAI 完全兼容，所以可以直接使用 OpenAI 接口，换一下模型名称、url 和 key 即可，如下所示：

from langchain_openai import ChatOpenAI
llm = ChatOpenAI(
        model='deepseek-chat', 
        openai_api_key=<your-deepseek-api-key>, 
        openai_api_base='https://api.deepseek.com/v1', 
        temperature=0.85, 
        max_tokens=8000
        )
<!-- gh-comment-id:2103914035 --> @soloice commented on GitHub (May 10, 2024): 有些用户问到怎么在 langchain 里调用 DeepSeek-V2，由于我们的接口和 OpenAI 完全兼容，所以可以直接使用 OpenAI 接口，换一下模型名称、url 和 key 即可，如下所示： ``` from langchain_openai import ChatOpenAI llm = ChatOpenAI(         model='deepseek-chat',         openai_api_key=<your-deepseek-api-key>,         openai_api_base='https://api.deepseek.com/v1',         temperature=0.85,         max_tokens=8000         ) ```
bsakaguchi commented 2026-10-26 21:06:49 +00:00
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@CarlQAQ commented on GitHub (Jul 24, 2024):

不行的，ChatOpenAI方法没有像你这种参数model='deepseek-chat',
openai_api_key=,
openai_api_base='https://api.deepseek.com/v1',

<!-- gh-comment-id:2246752491 --> @CarlQAQ commented on GitHub (Jul 24, 2024): 不行的，ChatOpenAI方法没有像你这种参数model='deepseek-chat', openai_api_key=<your-deepseek-api-key>, openai_api_base='https://api.deepseek.com/v1',
bsakaguchi commented 2026-10-26 21:06:49 +00:00
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@ZhangJiaQ commented on GitHub (Sep 11, 2024):

从这个地方Import 就有了 @CarlQAQ

from langchain_openai import ChatOpenAI

<!-- gh-comment-id:2342955098 --> @ZhangJiaQ commented on GitHub (Sep 11, 2024): 从这个地方Import 就有了 @CarlQAQ from langchain_openai import ChatOpenAI
bsakaguchi commented 2026-10-26 21:06:49 +00:00
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@SyJarvis commented on GitHub (Jan 27, 2025):

pip install langchain-deepseek

from langchain_deepseek import ChatDeepSeekAI
from langchain_core.output_parsers import StrOutputParser

llm = ChatDeepSeekAI(
model="deepseek-chat",
api_key="sk-...",
)

output_parser = StrOutputParser()
chain = llm | output_parser
response = chain.invoke("太阳系有几大行星？")
print(response)

<!-- gh-comment-id:2616301007 --> @SyJarvis commented on GitHub (Jan 27, 2025): pip install langchain-deepseek from langchain_deepseek import ChatDeepSeekAI from langchain_core.output_parsers import StrOutputParser llm = ChatDeepSeekAI( model="deepseek-chat", api_key="sk-...", ) output_parser = StrOutputParser() chain = llm | output_parser response = chain.invoke("太阳系有几大行星？") print(response)
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