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Konko API 是一个完全托管的 Web API，旨在帮助应用程序开发者：
  1. 选择适合其应用的开源或专有 LLM
  2. 通过与主流应用框架的集成及完全托管的 API 更快地构建应用
  3. 微调较小的开源 LLM，以极低的成本实现行业领先的性能
  4. 在无需基础设施搭建或管理的情况下，使用 Konko AI 符合 SOC 2 标准的多云基础设施部署生产级 API，满足安全性、隐私性、吞吐量和延迟的 SLA
本示例介绍如何使用 LangChain 与 Konko 的 ChatCompletion 模型进行交互 要运行本 notebook，您需要 Konko API 密钥。登录我们的 Web 应用以创建 API 密钥来访问模型 
from langchain_community.chat_models import ChatKonko
from langchain.messages import HumanMessage, SystemMessage

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设置环境变量

  1. 您可以设置以下环境变量：
    1. KONKO_API_KEY（必填）
    2. OPENAI_API_KEY（可选）
  2. 在当前 shell 会话中，使用 export 命令：
export KONKO_API_KEY={your_KONKO_API_KEY_here}
export OPENAI_API_KEY={your_OPENAI_API_KEY_here} #Optional

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调用模型

在 Konko 概览页面查找模型 另一种查找在 Konko 实例上运行的模型列表的方式是通过此接口。 从这里，我们可以初始化我们的模型： 
chat = ChatKonko(max_tokens=400, model="meta-llama/llama-2-13b-chat")

messages = [
    SystemMessage(content="You are a helpful assistant."),
    HumanMessage(content="Explain Big Bang Theory briefly"),
]
chat(messages)

AIMessage(content="  Sure thing! The Big Bang Theory is a scientific theory that explains the origins of the universe. In short, it suggests that the universe began as an infinitely hot and dense point around 13.8 billion years ago and expanded rapidly. This expansion continues to this day, and it's what makes the universe look the way it does.\n\nHere's a brief overview of the key points:\n\n1. The universe started as a singularity, a point of infinite density and temperature.\n2. The singularity expanded rapidly, causing the universe to cool and expand.\n3. As the universe expanded, particles began to form, including protons, neutrons, and electrons.\n4. These particles eventually came together to form atoms, and later, stars and galaxies.\n5. The universe is still expanding today, and the rate of this expansion is accelerating.\n\nThat's the Big Bang Theory in a nutshell! It's a pretty mind-blowing idea when you think about it, and it's supported by a lot of scientific evidence. Do you have any other questions about it?")
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