Langchain openai compatible api example Adapters are used to adapt LangChain models to other APIs. ChatDatabricks supports OpenAI-compatible tool calling API that lets you describe tools and their arguments, and have the model return a JSON object with a tool to invoke and the inputs to that tool. This example goes over how to use LangChain to interact with OpenAI models. please keep the key safe and private. API configuration OpenAI 是一家美国人工智能 (AI) 研究实验室，由非营利组织 OpenAI Incorporated 及其营利性子公司 OpenAI Limited Partnership 组成。OpenAI 进行人工智能研究，其公开声明的目的是促进和开发友好的人工智能。OpenAI 系统在 Microsoft 的 Azure 基础上构建的超级计算平台上运行。 *Google Vertex AI is Google's enterprise offering **Bumblebee self-hosted models - including Llama, Mistral and Zephyr ***LMStudio via their OpenAI compatibility API LangChain is short for Language Chain. Audio capabilities in the Realtime API are powered by the new GPT‑4o model gpt-4o-realtime-preview. OpenAI systems run on an Azure-based supercomputing platform from Microsoft. OpenAI. writeOnly = True. 🔬 Build for fast and production usages; 🚂 Support llama3, qwen2, gemma, etc, and many quantized versions full list; ⛓️ OpenAI-compatible API; 💬 Built-in ChatGPT like UI; 🔥 Accelerated LLM decoding with state-of-the-art Jan 30, 2025 · To further enhance your chatbot, explore LangChain’s documentation (LangChain Docs), experiment with different LLMs, and integrate additional tools like vector databases for better contextual understanding. OpenAI Official SDK uses the official OpenAI Java SDK. Can be passed in OpenAI format. Feb 3, 2025 · Open-source examples and guides for building with the OpenAI API. runnables. format = password. FastAPI WebSocket Endpoints for Twilio Integration Nov 9, 2023 · In this comprehensive guide, you’ll learn how to implement a Retrieval-Augmented Generation (RAG) system using OpenAI’s API using LangChain. OpenLLM lets developers run any open-source LLMs as OpenAI-compatible API endpoints with a single command. Embedding models Dec 9, 2024 · class OpenAIAssistantRunnable (RunnableSerializable [Dict, OutputType]): """Run an OpenAI Assistant. If not passed in will be read from env var OPENAI_ORG_ID. When this FewShotPromptTemplate is formatted, it formats the passed examples using the example_prompt, then and adds them to the final prompt before suffix: Apr 26, 2025 · 百炼为通义千问视觉模型提供了与OpenAI兼容的使用方式。如果您之前使用OpenAI SDK或者其他OpenAI兼容接口（例如langchain_openai SDK），或者HTTP方式调用OpenAI的视觉模型服务，只需在原有框架下调整API-KEY、BASE_URL、model等参数，就可以直接使用通义千问视觉模型。 Tool calling . Parameters. Bases: BaseOpenAI Azure-specific OpenAI large language models. API configuration Sep 11, 2023 · Langchain as a framework. Example selectors are used in few-shot prompting to select examples for a prompt. base_url: Optional[str] Base URL for API requests. Dec 9, 2024 · langchain_community 0. OpenAI Compatible Server. How to integrate a local model into FastChat API server? It implements the OpenAI Completion class so that it can be used as a drop-in replacement for the OpenAI API. Review full docs for full user-facing oauth developer support. This will help you get started with OpenAI completion models (LLMs) using LangChain. OpenAI large language models. Can you help? Thank you. Uses async, supports batching and streaming. See a full list of supported models here. utils import ConfigurableField from langchain_openai import ChatOpenAI model = ChatAnthropic (model_name = "claude-3-sonnet-20240229"). AsyncClient to make asynchronous HTTP requests to the model provider's API. Description Links; LLMs Minimal example that reserves OpenAI and Anthropic chat models. azure. 3 release, LangChain uses Pydantic 2 internally. Apr 2, 2025 · OpenAI-Compatible API Server. Sep 17, 2024 · from langchain import OpenAI from langchain. If you want to get automated tracing from runs of individual tools, you can also set your LangSmith API key by uncommenting below: To access AzureOpenAI embedding models you'll need to create an Azure account, get an API key, and install the langchain-openai integration package. llama-cpp-python offers an OpenAI API compatible web server. Additionally, vLLM offers experimental support for OpenAI Vision API compatible inference, which can be explored further in the documentation. Example 1: Simple Chatbot. This step is crucial to authenticate your To access OpenAIEmbeddings embedding models you’ll need to create an OpenAI account, get an API key, and install the @langchain/openai integration package. Feb 8, 2024 · Starting with version 1. This example goes over how to use LangChain to interact with OpenAI models Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. This key does not have to match your actual OpenAI key, and you don't need to have an OpenAI API key. To access OpenAI chat models you’ll need to create an OpenAI account, get an API key, and install the @langchain/openai integration package. 0, TGI offers an API compatible with the OpenAI Chat Completion API. It parses an input OpenAPI spec into JSON Schema that the OpenAI functions API can handle. This changeset utilizes BaseOpenAI for minimal added code. AzureOpenAI [source] ¶. Key Features of Ollama API Compatibility. --model-path can be a local folder or a Hugging Face repo name. Head to https://platform. . As we can see our LLM generated arguments to a tool! You can look at the docs for bind_tools() to learn about all the ways to customize how your LLM selects tools, as well as this guide on how to force the LLM to call a tool rather than letting it decide. Once you’ve done this set the OPENAI_API_KEY environment variable: from langchain_anthropic import ChatAnthropic from langchain_core. By integrating TaskingAI into LangChain, developers can harness a broad spectrum of AI models from various providers via a unified API that also supports OpenAI-standard responses. FastChat API server can interface with apps based on the OpenAI API through the OpenAI API protocol. ChatGPT is the Artificial Intelligence (AI) chatbot developed by OpenAI. Step 1: Create your own API key in Secrets Manager (MUST) Note: This step is to use any string (without spaces) you like to create a custom API Key (credential) that will be used to access the proxy API later. If not passed in will be read from env var OPENAI_API_KEY. openai provides convenient access to the OpenAI API. tool-calling is extremely useful for building tool-using chains and agents, and for getting structured outputs from models more generally. List[str] get_name (suffix: Optional [str] = None, *, name: Optional [str] = None) → str ¶ Get the name of the runnable. bind_tools() methods as described here. Experimental Nature: The OpenAI compatibility feature is experimental and may undergo significant changes, including breaking changes. You can use this file to test the toolkit. param client: Any [Optional] ¶ OpenAI or AzureOpenAI client. Create a new function chatbot that calls OpenAI using llm. By bridging the LangChain framework with the versatile OpenAPI specification, we’ll Jun 14, 2024 · Seamless Integration — Connect Langchain agents using OpenAI-compatible APIs, including: OpenAI Compatible Assistant API; OpenAI Compatible Chat completion API; Built-in FastAPI May 2, 2025 · This package contains the LangChain integrations for OpenAI through their openai SDK. 19¶ langchain_community. api_key: Optional[str] OpenAI API key. Feb 17, 2025 · We're excited to announce that Opper now provides an OpenAI-compatible API endpoint, making it easier than ever to access many models and capabilities through a single API. Define OPENAI_API_KEY or ANTHROPIC_API_KEY on your system. The goal of this project is to create an OpenAI API-compatible version of the embeddings endpoint, which serves open source sentence-transformers models and other models supported by the LangChain's HuggingFaceEmbeddings, HuggingFaceInstructEmbeddings and HuggingFaceBgeEmbeddings class. param openai_organization: str | None = None (alias api_key: Optional[str] OpenAI API key. AzureOpenAI [source] #. param async_client: Any = None # OpenAI or AzureOpenAI async client. May 2, 2023 · LangChain is a framework for developing applications powered by language models. 🔬 Build for fast and production usages; 🚂 Support llama3, qwen2, gemma, etc, and many quantized versions full list; ⛓️ OpenAI-compatible API; 💬 Built-in ChatGPT like UI To effectively integrate the Javelin AI Gateway for embeddings, you will utilize the JavelinAIGatewayEmbeddings class from the langchain_community library. 0 # Frequency with which to check run progress in ms. This examples goes over how to use LangChain to interact with both OpenAI and HuggingFace. NOTE: Using bind_tools is recommended instead, as the functions and function_call request parameters are officially marked as deprecated by OpenAI. I used the GitHub search to find a similar question and didn't find it. openai. 请确保您的计算机上安装了 Python 环境。 通过运行以下命令安装 langchain_openai SDK。 # 如果下述命令报错，请将 pip 替换为 pip3 pip install -U langchain_openai; 您需要开通阿里云百炼模型服务并获得 API-KEY，详情请参考：获取 API Key。 Mar 24, 2024 · To do this, I’ve followed OpenAI’s Chat API reference openly available here, with some help from the code of vLLM, an Apache-2. g. specified. See the notebook example here. Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. This allows vLLM to be used as a drop-in replacement for applications using OpenAI API. Their framework enables you to build layered LLM-powered applications that are context-aware and able to interact dynamically with their environment as agents, leading to simplified code for you and a more dynamic user experience for your customers. Apr 26, 2025 · 通过 langchain_openai SDK 调用 前提条件. Sep 1, 2024 · Building the OpenAI Compatible API. Jul 5, 2024 · Expand the capabilities of your conversational agents and enable them to interact dynamically with APIs. com 注册 OpenAI 并生成 API 密钥。完成后，设置 OPENAI_API_KEY 环境变量 Feb 8, 2024 · OpenAI compatibility February 8, 2024. By leveraging Langfuse’s observability tools and Dec 20, 2024 · Nodes are points on graphs and in langgraph nodes are represented with functions. They can also be passed via . This means that the open models can be used as a replacement without any need for code modification. Feb 16, 2023 · # Test that your OpenAI API key is correctly set as an environment variable # Note. AzureOpenAI# class langchain_openai. AsyncOpenAI, openai. bindTools, like shown in the examples below: Dec 27, 2024 · I searched the LangChain documentation with the integrated search. Firstly, it works mostly the same as OpenAI Function Calling. This integration allows you to seamlessly generate embeddings for both queries and documents, leveraging the capabilities of the Javelin AI Gateway. Configuring OpenAI. Overview This will help you getting started with vLLM chat models, which leverage the langchain-openai package. Constraints. OpenWeatherMap provides all essential weather data for a specific location: 📄️ OracleAI Vector Search Dec 9, 2024 · Base URL path for API requests, leave blank if not using a proxy or service emulator. alternatively you can set a temporary env variable like this: # os. Sep 30, 2023 · Open-source examples and guides for building with the OpenAI API. Dec 9, 2024 · param openai_api_base: Optional [str] = None (alias 'base_url') ¶ Base URL path for API requests, leave blank if not using a proxy or service emulator. Processes the response and sends it back to the caller. model (str) – Assistant model to use. Connect CrewAI to LLMs!!! note "Default LLM" By default, CrewAI uses OpenAI's GPT-4 model for language processing. Streams real-time audio to OpenAI's Realtime API. If you are using an LLM Observability tool (which I highly recommend), you can set up the Callback Handler in the API Server. param openai_organization: Optional [str] = None (alias 'organization') ¶ Automatically inferred from env var OPENAI_ORG_ID if Jun 9, 2023 · Local OpenAI API Server with FastChat. Mar 10, 2022 · Open-source examples and guides for building with the OpenAI API. configurable_alternatives (ConfigurableField (id = "llm"), default_key = "anthropic", openai = ChatOpenAI ()) # uses the default model Stream all output from a runnable, as reported to the callback system. Overview Integration details OpenLM is a zero-dependency OpenAI-compatible LLM provider that can call different inference endpoints directly via HTTP. Here is an example: Here is an example: import { OpenAI } from "@langchain/openai" ; const model = new OpenAI ( { temperature : 1 , openAIApiKey : 'xxx' , modelName : 'glm-4' } , { baseURL : "https Oct 26, 2024 · 概要. How to use LangChain with different Pydantic versions. This compatibility layer allows you to use Opper with any tool or library designed for OpenAI's API or SDKs (such as LangChain, Vercel AI SDK, DSPy, etc). For example, if the class is langchain. Another Idea would be to embedd my LangChain App into a Tool that can bei registered as a LibreChat Plugin. OpenRouter is an API that can be used with most AI SDKs, and has a very similar format to OpenAI's own API. If you're working with prior versions of LangChain, please see the following guide on Pydantic compatibility. 1st example: hierarchical planning agent . getpass ("Enter API key for OpenAI The Assistants API currently supports three types of tools: Code Interpreter, Retrieval, and Function calling. Any parameters that are valid to be passed to the openai. param openai_api_key: SecretStr | None = None (alias 'api_key') # Automatically inferred from env var OPENAI_API_KEY if not provided. Here’s a basic example: OpenAI conducts AI research with the declared intention of promoting and developing a friendly AI. Async programming: The basics that one should know to use LangChain in an asynchronous context. tools import MoveFileTool from langchain_core. OpenAI has a tool calling (we use "tool calling" and "function calling" interchangeably here) API that lets you describe tools and their arguments, and have the model return a JSON object with a tool to invoke and the inputs to that tool. Initialize the OpenAI client using the API key obtained earlier. Use the examples folder in this repo to integrate different SDKs with OpenRouter. Ollama tool calling Ollama tool calling uses the OpenAI compatible web server specification, and can be used with the default BaseChatModel. Once you’ve done this set the OPENAI_API_KEY environment variable: Assumes model is compatible with OpenAI function-calling API. These applications directly use ChatGPT via api key and openai client library. The OpenAI API is powered by a diverse set of models with different capabilities and price points. This notebook requires the following Python packages: openai, tiktoken, langchain and tair. Install requirements. . Credentials Head to the Azure docs to create your deployment and generate an API key. async_client (Optional[Union[openai. Nov 13, 2024 · Example: Setting Up a Voice Agent with Twilio. This example goes over how to use the Zapier integration with a SimpleSequentialChain, then an Dec 29, 2023 · The integration of the latest OpenAI models, specifically gpt-4-1106-preview, and ensuring compatibility with the latest version of the OpenAI API (version 1. param client: Any [Optional] # OpenAI or AzureOpenAI client. You can use this to control the agent. vLLM supports all parameters except for: Chat: tools, and tool_choice. May 1, 2025 · This compatibility is designed to help developers leverage the capabilities of Ollama while maintaining familiarity with the OpenAI API structure. Installation and Setup Get an OpenAI api key and set it as an environment variable (OPENAI_API_KEY) Chat model See a usage example. For example, Klarna has a YAML file that describes its API and allows OpenAI to interact with it: A bridge to use Langchain output as an OpenAI-compatible API. function_calling import convert_to_openai_function from langchain_openai import ChatOpenAI Apr 29, 2025 · For comprehensive details on the API, refer to the OpenAI API Reference. import os # Note. param openai_api_key: SecretStr | None [Optional] (alias 'api_key') # Automatically inferred from env var OPENAI_API_KEY if not provided. Although you can use the TensorRT LLM integration published recently, it has no support for chat models yet, not to mention user defined templates. param openai_organization: str | None = None (alias Mar 15, 2023 · This notebook goes over how to use Langchain with Azure OpenAI. param assistant_id: str [Required] ¶ OpenAI assistant id. bind, or the second arg in . With LangGraph react agent executor, by default there is no prompt. To use, you should have the openai python package installed, and the environment variable OPENAI_API_KEY set with your API key. param openai_organization: Optional [str] [Optional Use as a LangChain agent, compatible with the AgentExecutor. utils. In this example, we'll consider an approach called hierarchical planning, common in robotics and appearing in recent works for LLMs X robotics. GPU Support. 📄️ OpenWeatherMap. OpenAI-Compatible Completion OpenAI Chat large language models. param openai_api_key: str | None = None (alias 'api_key') # Automatically inferred from env var OPENAI_API_KEY if not provided. format = password 很多人开始使用 OpenAI，但希望探索其他模型。LangChain 与许多模型提供商的集成使这变得简单。虽然 LangChain 有自己的消息和模型 API，但我们也尽可能简化了探索其他模型的过程，通过暴露适配器将 LangChain 模型适配到 OpenAI API。 Dec 9, 2024 · Base URL path for API requests, leave blank if not using a proxy or service emulator. 4. create_assistant(name="langchain assistant", instructions="You are a personal math tutor. To use the Azure OpenAI service use the AzureChatOpenAI integration. js repository has a sample OpenAPI spec file in the examples directory. tool_resources (Optional[Union[AssistantToolResources, dict, NotGiven]]) – Assistant tool resources. llms import VLLMOpenAI llm = VLLMOpenAI( openai_api_key="EMP Example selectors: Used to select the most relevant examples from a dataset based on a given input. A lot of people get started with OpenAI but want to explore other models. param assistant_id: str [Required] # OpenAI assistant id. tool-calling is extremely useful for building tool-using chains and agents, and Can be passed in OpenAI format or as BaseTools. organization: Optional[str] OpenAI organization ID. invoke. environ["OPENAI_API_KEY"] = "YOUR pip install langchain openai This command installs both LangChain and the OpenAI API client, which are essential for building applications that leverage language models. If you find this project useful, please give it a star ⭐! InMemoryMessageRepository, InMemoryRunRepository, InMemoryThreadRepository, Nov 7, 2023 · Context-based search pipeline (source: LangChain Docs) Semantic search Q&A using LangChain and OpenAI APIs # insert an openai key below parameter import os os. For example, the ainvoke method of many ChatModel implementations uses the httpx. Developers should be Dec 9, 2024 · Base URL path for API requests, leave blank if not using a proxy or service emulator. Dec 9, 2024 · Use as a LangChain agent, compatible with the AgentExecutor. Nov 17, 2023 · This quick start focus mostly on the server-side use case for brevity. But I can't get it working. Introducing the Dec 9, 2024 · class langchain_openai. By modifying the configuration, you can use the OpenAI SDK or software compatible with the OpenAI API to access the DeepSeek API. Quickstart Many APIs are already compatible with OpenAI function calling. The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package). The REST API can be seamlessly operated from Google Colab, as demonstrated Oct 1, 2024 · The Realtime API will begin rolling out today in public beta to all paid developers. The list of messages per example corresponds to: Expose Anthropic Claude as an OpenAI compatible API; Use a third party library injector library; More examples can be found in tests/test_functional directory. Ollama now has built-in compatibility with the OpenAI Chat Completions API, making it possible to use more tooling and applications with Ollama locally. tiktoken is a fast BPE tokeniser for use with OpenAI's models. Credentials Head to platform. 🦾 OpenLLM lets developers run any open-source LLMs as OpenAI-compatible API endpoints with a single command. See a usage example. Example Assumes model is compatible with OpenAI function-calling API. format Feb 26, 2025 · 在人工智能开发中，调用多种第三方大模型（如 OpenAI、DeepSeek、阿里云等）是常见的需求。本文将详细介绍如何通过 LangChain 和 . code-block:: python from langchain_experimental. When an asynchronous implementation is not available, LangChain tries to provide a default implementation, even if it incurs a slight overhead. Base URL path for API requests, leave blank if not using a proxy or service emulator. environ["OPENAI_API_KEY"] = "sk npm install @langchain/openai export OPENAI_API_KEY = "your-api-key" Copy Constructor args Runtime args. LangChain's integrations with many model providers make this easy to do so. Below is an example implementation of a voice agent that: Uses Twilio's Media Streams to handle voice calls. OpenAI, then the namespace is [“langchain”, “llms”, “openai”] Return type. create call can be passed in, even if not explicitly saved on this class. An OpenAI API key. The figure below shows the overall architecture. langchain helps us to build applications with LLM more easily. Setup Installation. Jul 24, 2023 · End-to-End LangChain Example. To pass provider-specific args, go here vLLM can be deployed as a server that mimics the OpenAI API protocol. Browse a collection of snippets, advanced techniques and walkthroughs. This code is an adapter that converts our example to a list of messages that can be fed into a chat model. Audio in the Chat Completions API will be released in the coming weeks, as a new model gpt-4o-audio-preview. 2. Credentials Head to OpenAI’s website to sign up for OpenAI and generate an API key. Standard parameters are currently only enforced on integrations that have their own integration packages (e. The openai Python package makes it easy to use both OpenAI and Azure OpenAI. May 22, 2024 · Get the namespace of the langchain object. ⚠️ Setup to run examples. The LangChain. Jump to Example Using OAuth Access Token to see a short example how to set up Zapier for user-facing situations. This project is not limited to OpenAI’s models; some examples demonstrate the use of Anthropic’s language models. Jun 20, 2024 · To customize the API base for ChatOpenAI to connect to GLM, which is compatible with the OpenAI API, you can set the baseURL in the configuration. vLLM includes an OpenAI-compatible API server, facilitating seamless integration with existing applications that utilize OpenAI's models. Make sure to select an ollama model that supports tool calling. Use any OpenAI-compatible UI or UI framework with your custom Langchain Agent. I am sure that this is a bug in LangChain rather than my code. Step 1: Loading Tools and Initializing the Agent. 📄️ OpenSearch. OpenAI-Compatible Completion Konko API is a fully managed Web API designed to help application dev Layerup Security The Layerup Security integration allows you to secure your calls to a Jan 14, 2024 · In many LLM Application, OpenAI API is a widely used format. This compatibility ensures that developers can leverage vLLM's high-throughput capabilities without significant changes to their existing workflows. llms. While LangChain has its own message and model APIs, LangChain has also made it as easy as possible to explore other models by exposing an adapter to adapt LangChain models to the other APIs, as to the OpenAI API. param openai_api_key: Optional [SecretStr] = None (alias 'api_key') ¶ Automatically inferred from env var OPENAI_API_KEY if not provided. Creating a simple chatbot using LangChain and ChatOpenAI is straightforward. async As an example, let's get a model to generate a joke and separate the setup from the punchline: ["OPENAI_API_KEY"] = getpass. The Azure OpenAI API is compatible with OpenAI's API. You can interact with OpenAI Assistants using OpenAI tools or custom tools. If you are using a model hosted on Azure, you should use different wrapper for that: For a more detailed walkthrough of the Azure wrapper, see here. param openai_api_key: Optional [str] = None (alias 'api_key') ¶ Automatically inferred from env var OPENAI_API_KEY if not provided. This page goes over how to use LangChain with Azure OpenAI. LLM-generated interface: Use an LLM with access to API documentation to create an interface. You can call Azure OpenAI the same way you call OpenAI with the exceptions noted below. Credentials You’ll need to have an Azure OpenAI instance deployed. LangChain uses OpenAI model names by default, so we need to assign some faux OpenAI model names to our local model. 访问 https://platform. AsyncAzureOpenAI]]) – AsyncOpenAI client. When using exclusively OpenAI tools, you can just invoke the assistant directly and get final answers. You can also check out the LangChain GitHub repository (LangChain GitHub) and OpenAI’s API guides (OpenAI Docs) for more insights. Below, you can find different SDKs adapted to use OpenRouter. The server can be installed by running the following command: Dec 9, 2024 · Since LocalAI and OpenAI have 1:1 compatibility between APIs, this class uses the openai Python package’s openai. This server can be queried in the same format as OpenAI API. It implements the OpenAI Completion class so that it can be used as a drop-in replacement for the OpenAI API. Jan 10, 2025 · The DeepSeek API uses an API format compatible with OpenAI. Since the openai_trtllm is compatible with OpenAI API, you can easily integrate with LangChain as an alternative to OpenAI or ChatOpenAI. 0. chains import LLMChain 2. OpenAI is an artificial intelligence (AI) research laboratory. messages import HumanMessage from langchain_core. param openai_api_key: Optional [SecretStr] [Optional] (alias 'api_key') ¶ Automatically inferred from env var OPENAI_API_KEY if not provided. Example using OpenAI tools:. A minimal example: from langchain. batch, etc. from langchain_community. param openai_organization: str | None [Optional] (alias Prompt Templates . 要访问 OpenAI 模型，您需要创建一个 OpenAI 账户，获取 API 密钥，并安装 langchain-openai 集成包。 凭证 . stream, . Runtime args can be passed as the second argument to any of the base runnable methods . ), they're not enforced on models in langchain-community. To begin, install the necessary dependencies and load the required tools: Assumes model is compatible with OpenAI function-calling API. langchain-openai, langchain-anthropic, etc. While LangChain has it's own message and model APIs, we've also made it as easy as possible to explore other models by exposing an adapter to adapt LangChain models to the OpenAI api. Embedding as its client. LiteLLM Proxy is OpenAI-Compatible, it works with any project that calls OpenAI. Users should install Pydantic 2 and are advised to avoid using the pydantic. This includes all inner runs of LLMs, Retrievers, Tools, etc. Once you’ve done this set the OPENAI_API_KEY environment variable: LangChain4j provides 4 different integrations with OpenAI for using chat models, and this is #1 : OpenAI uses a custom Java implementation of the OpenAI REST API, that works best with Quarkus (as it uses the Quarkus REST client) and Spring (as it uses Spring's RestClient). Just change the base_url , api_key and model . 0 licensed inference server for LLMs that also offers OpenAI API compatibility. Completions: suffix. param async_client: Any = None ¶ OpenAI or AzureOpenAI async client. v1 namespace of Pydantic 2 with LangChain APIs. Output is streamed as Log objects, which include a list of jsonpatch ops that describe how the state of the run has changed in each step, and the final state of the run. env 文件加载环境变量，并灵活配置多个模型的调用方式。 Mar 31, 2024 · Does anybody know how to expose an OpenAI compatible API with LangChain? LangServe does not seem to Support it. However, you can configure your agents to use a different model or API. Now that you understand the key features of LangChain, let's explore an end-to-end example of creating a web app using LangChain, OpenAI GPT-3, and Streamlit. Example Code For example, some providers do not expose a configuration for maximum output tokens, so max_tokens can't be supported on these. ainvoke sending it the current state of stored messages. A FastAPI + Langchain / langgraph extension to expose agent result as an OpenAI-compatible API. Here, we use Vicuna as an example and use it for three endpoints: chat completion, completion, and embedding. This web server can be used to serve local models and easily connect them to existing clients. param check_every_ms: float = 1000. 0 ¶ Frequency with which to check run progress in ms. The new Messages API allows customers and users to transition seamlessly from OpenAI models to open LLMs. This cookbook demonstrates how to monitor DeepSeek models using the OpenAI SDK integration with Langfuse. Once you've Dec 1, 2023 · This notebook goes over how to use Langchain with Azure OpenAI. server, client: Retriever Simple server that exposes a retriever as a runnable. Dec 9, 2024 · OpenAI Chat large language models. OpenAI offers a spectrum of models with different levels of power suitable for different tasks. Share your own examples and guides. type = string. Thus, you should have the openai python package installed, and defeat the environment variable OPENAI_API_KEY by setting to a random string. Constraints: type = string. With legacy LangChain agents you have to pass in a prompt template. To access AzureOpenAI models you'll need to create an Azure account, create a deployment of an Azure OpenAI model, get the name and endpoint for your deployment, get an Azure OpenAI API key, and install the langchain-openai integration package. This allows ChatGPT to automatically select the correct method and populate the correct parameters for the a API call in the spec for a given user input. openai_assistant import OpenAIAssistantRunnable interpreter_assistant = OpenAIAssistantRunnable. Usage Functions: For example, OpenAI functions is one popular means of doing this. This page covers how to use the OpenSearch ecosystem within LangChain. if you run this notebook locally, you will need to reload your terminal and the notebook for the env variables to be live. For detailed documentation on OpenAI features and configuration options, please refer to the API reference. After that, they are empowered by LLM and have there func LangChain is a comprehensive framework designed for developers to create and deploy sophisticated language-based AI applications. Only specify if using a proxy or service emulator. param openai_organization: str | None = None (alias 'organization') # Automatically inferred from env var OPENAI_ORG_ID if not provided. Game Plan. For my Langchain example, I FastChat provides OpenAI-compatible APIs for its supported models, so you can use FastChat as a local drop-in replacement for OpenAI APIs. This object takes in the few-shot examples and the formatter for the few-shot examples. OpenAI-Compatible Server vLLM can be deployed as a server that mimics the OpenAI API protocol. The FastChat server is compatible with both openai-python library and cURL commands. We then make the actual API call, and return the result. OpenAIのRealtime APIが出て久しいですね。 料金は高めですが、非常に強力なツールだと思います。実装して色々使ってみたいと思いますが、自分は基本的にLLM開発にはLangchainを利用しているので、Realtime APIでもLangchainを利用できなかなと思ってました。 def tool_example_to_messages (example: Example)-> List [BaseMessage]: """Convert an example into a list of messages that can be fed into an LLM. com to sign up to OpenAI and generate an API key. 0 and beyond) is indeed a valuable enhancement for the LangChain framework. This tutorial will walk you through setting up the… 1st example: hierarchical planning agent . The API can be directly used with OpenAI's client libraries or third-party tools, like LangChain or LlamaIndex. As of the 0. LangChain integrates with many model providers. param openai_organization: Optional [str] = None (alias 'organization') ¶ Automatically inferred from env var OPENAI_ORG_ID if OpenLLM lets developers run any open-source LLMs as OpenAI-compatible API endpoints with a single command. We will be building a mock API that mimics the way OpenAI’s Chat Completion API (/v1/chat/completions) works. param openai_api_base: str | None = None (alias 'base_url') # Base URL path for API requests, leave blank if not using a proxy or service emulator. Pass the examples and formatter to FewShotPromptTemplate Finally, create a FewShotPromptTemplate object. Dec 9, 2024 · To use, you should have the openai python package installed, and the environment variable OPENAI_API_KEY set with your API key. To access OpenAI embedding models you'll need to create a/an OpenAI account, get an API key, and install the langchain-openai integration package. API configuration Nov 12, 2023 · On the Langchain website, it states vLLMOpenAI supports both batching and async batching. adapters ¶. suffix (Optional[str Base URL path for API requests, leave blank if not using a proxy or service emulator. OpenAI conducts AI research with the declared intention of promoting and developing a friendly AI. To access OpenAI models you'll need to create an OpenAI account, get an API key, and install the langchain-openai integration package. gqp haxav acbg bnl nznnftd itniqqe lrrbb kfew fjhq szpe fszsng pzoly teyn rzkxoif drtg