How Much Per Word For Chatgpt 4 Api

Artificial Intelligence Software

I have been closely monitoring the advancements of advanced AI models such as ChatGPT-4, as a frequent user of language models. With the launch of the ChatGPT-4 API, developers and businesses now have the opportunity to incorporate robust conversational AI into their applications. A commonly asked question is: “What is the cost per word for using the ChatGPT-4 API?”

Before diving into the pricing details, it’s important to note that the pricing structure for language model APIs can vary among providers. The exact cost per word for ChatGPT-4 API may depend on factors such as usage volume, subscription plans, or any additional services bundled with the API.

OpenAI, the organization behind ChatGPT, has adopted a usage-based pricing model for its API. Instead of charging per word, OpenAI charges based on the number of tokens used in API calls. Tokens are chunks of text that can be as short as one character or as long as one word. The specific token count for a given text depends on the language and complexity of the content.

So, how does this token-based pricing work in practice? Let’s take an example. Suppose I want to generate a response from ChatGPT-4 API that involves sending 10 tokens. If the cost per token is $0.01, then the total cost for that API call would be $0.1 (10 tokens x $0.01 per token).

It’s worth mentioning that token count includes both input and output tokens. For instance, if I send a message consisting of 5 tokens and receive a response consisting of 10 tokens, the total token count for that interaction would be 15 tokens.

To get a better idea of the potential costs, let’s consider some real-world scenarios. If you are building a chatbot that sends a single message to ChatGPT-4 API with 20 tokens and receives a response with 30 tokens, the total token count for that interaction would be 50 tokens. Based on the token rates provided by OpenAI, you can calculate the corresponding cost by multiplying the total token count by the cost per token.

It’s important to note that OpenAI offers different pricing tiers and subscription plans, so the cost per token can vary depending on your usage. For more details and up-to-date pricing information, it’s recommended to visit the OpenAI Pricing page or consult the OpenAI documentation.

Considering the potential costs involved, it’s essential to be mindful of your API usage to avoid any surprise bills. Monitoring and optimizing the token count in your API interactions can help manage costs effectively. OpenAI provides tools and guidelines for understanding token usage, and exploring them can be valuable in fine-tuning your applications.


While ChatGPT-4 API doesn’t have a fixed cost per word, OpenAI’s token-based pricing model provides flexibility and transparency in calculating the costs based on token usage. By implementing thoughtful strategies to optimize token count and understanding the pricing details, developers and businesses can leverage the power of ChatGPT-4 API while managing their budget effectively.