How to Get ChatGPT API Key: A Comprehensive Guide


ChatGPT is an AI language model developed by OpenAI that can engage in natural language conversations with users. The ChatGPT API enables developers to integrate this model into their applications and create chatbots, voice assistants, and other conversational interfaces. To access the ChatGPT API, developers need to obtain an API key. This article provides a comprehensive guide on how to get a ChatGPT API key, how to generate one, and how much it costs to use the ChatGPT API.

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How to Get ChatGPT API Key

To get a ChatGPT API key, developers need to visit OpenAI’s official website and log in with their email address. Once logged in, they can find their API key by clicking on the “View API Keys” icon in the top-right area of the screen. The API key can be found in the user settings.

It is important to note that the ChatGPT API is a paid service, and users need to pay for usage. According to the search results, the cost of using the ChatGPT API is $0.002 per 1,000 tokens or about 750 words. This is significantly cheaper than the existing GPT-3.5 models, which makes it more accessible to developers and enterprises. OpenAI has also confirmed that developers will get the gpt-3.5-turbo stable model with an option to opt for a specific version such as gpt-3.5-turbo-0301, which will be supported until June 13. Additionally, OpenAI is offering dedicated instances to pay for access to the computing infrastructure, run by Azure, for developers who are likely to optimize workloads against hardware performance or use more than 450 million tokens every day. It is important to note that while the fees are low, users should keep a close eye on the usage as it can add up to a substantial price based on the usage.

However, there is an open-source proxy API called ChatGPT API Free that allows developers to access the ChatGPT API without a key. To use ChatGPT API Free, developers can send a POST request to the endpoint. Note that while there are some free options available, some usage may require payment.

How to Generate an API Key for ChatGPT

To generate an API key for ChatGPT, developers need to sign up for an account on the OpenAI website. Once you have an account, you can find your API key by clicking on the “View API Keys” option. This will allow you to obtain the API key that you can use to access the ChatGPT API. Note that while there are some free options available, some usage may require payment.

How to use ChatGPT API in Python

  1. Obtain an OpenAI API key: You can obtain an API key by signing up for an account on the OpenAI website and generating a key.
  2. Install the OpenAI API client: You can install the OpenAI API client by running the command “pip install openai” in your terminal.
  • Authenticate with the API: You will need to authenticate with the API by setting the “OPENAI_API_KEY” environment variable to your API key.
  • Use the API: You can use the API by creating an instance of the “openai.api” class and calling the various methods provided by the API, such as “completion”.

How to use the ChatGPT API key in VS Code

  1. To use the ChatGPT API key in VS Code, you need to first install the ChatGPT extension from the VS Code marketplace. After installing the extension, you can set the API key by opening the Command Palette using the shortcut Ctrl+Shift+P (Windows, Linux) or Cmd+Shift+P (macOS) and searching for “CodeGPT”. Then, select “CodeGPT: set API key” from the options and enter your ChatGPT API key.
  2. Another way to set the API key is by opening the VS Code settings and searching for “CodeGPT”. You can then copy and paste the generated API key into the “CodeGPT: API Key” field.
  3. Once you have set the API key, you can use the ChatGPT extension in VS Code to generate code snippets, complete sentences, and more using the OpenAI GPT models.

How to fix ChatGPT API key not working

If you’re encountering problems with a Chat GPT API key, there are several troubleshooting steps you can take. One possible issue is that the API key is invalid or doesn’t have the appropriate permissions to access the resource you’re trying to access. Another possibility is that there may be an issue with your login credentials. You could try disabling any browser extensions or using a VPN to see if that resolves the problem. If you’re still having difficulties, you can check the Chat GPT documentation or contact their support team for assistance. It’s also critical to ensure that your API key is secure and not at risk of being intercepted by unauthorized parties.


Getting a ChatGPT API key is essential for developers looking to create conversational interfaces using OpenAI’s GPT models. With the comprehensive guide provided in this article, developers can easily obtain and generate an API key, install the OpenAI API client, authenticate with the API, and use it in various programming environments, including Python and VS Code.

It’s important to note that the ChatGPT API is a paid service, but the fees are low, making it more accessible to developers and enterprises. Developers should monitor their usage to avoid any unexpected costs. Additionally, there is a free, open-source proxy API available, but it may have some limitations.

If you encounter any issues with your ChatGPT API key, there are troubleshooting steps available, and it’s crucial to keep your API key secure. With the ChatGPT API, developers can build intelligent chatbots and voice assistants, enhance their applications’ natural language processing capabilities, and provide a better user experience.

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