Invalid key in 'logit_bias': only non-negative integers are allowed.

The 400 status error in the OpenAI API, indicated by a "Bad Request" response, can be triggered by several reasons. Here are some possible explanations for the error you're encountering:

Invalid API Key

The error could be due to an incorrect, expired, or improperly configured API key. This is a common issue where the API key used in the code does not match the one listed in the OpenAI Developer Dashboard, or the key might have expired.

Rate Limiting and Throttling

OpenAI has rate limits on the number of API requests you can make within a given time frame. Exceeding these limits can result in a 400 error.

Invalid Request Parameters

The request might contain invalid or unsupported parameters. For example, if the request includes additional properties that are not recognized by the API, such as an invalid key in the request body (e.g., logit_bias: additionalProp1), it will result in a 400 error. This indicates that the parameters submitted do not comply with the API's requirements.

Incorrect Request Syntax or Configuration

The request syntax or configuration might be incorrect. This could include issues such as new lines at the beginning or end of the text input, which can cause the API to reject the request.

Model-Specific Errors

Some errors can be specific to the model being used. For instance, if a model does not support certain parameters (like specifying dimensions), it will return a 400 error with an appropriate error message.

Network Issues

Although less common, network issues such as packet loss or high latency can also cause the API request to fail with a 400 status code.