[Fixed] Why am I getting invalid model error with "gpt-35-turbo-16k" model in Azure Open AI but not with "gpt-35-turbo"? – Azure

by
Alexei Petrov
azure-active-directory azure-openai langchain python streamlit

Quick Fix: Use GPT-3.5 Turbo (0301) model for Completions API to resolve invalid model error with gpt-35-turbo-16k.

The Problem:

When using Azure Open AI, an "InvalidRequestError" is encountered when specifying the "gpt-35-turbo-16k" model. However, the code works fine with the "gpt-35-turbo" model. The documentation suggests that "gpt-35-turbo-16k" supports up to 16k input tokens while "gpt-35-turbo" supports up to 4k input tokens. Why does the error occur with "gpt-35-turbo-16k"?

The Solutions:

Solution 1: Insufficient Permissions

The error you’re encountering, "InvalidRequestError: The completion operation does not work with the specified model, gpt-35-turbo-16k," is likely due to insufficient permissions or incorrect model selection. Here’s what you can do to resolve this issue:

  1. Verify Model Compatibility:

    • Check if the "gpt-35-turbo-16k" model is supported for the specific API operation you’re trying to perform (e.g., Chat Completion API or Completions API).
    • Ensure the version of the model (0613 or 0301) is compatible with your operation. Refer to the Azure OpenAI documentation for details.
  2. Check Permissions:

    • Verify that you have the necessary permissions and access rights to use the "gpt-35-turbo-16k" model. Make sure your Azure account has the appropriate role, such as the "Owner" or "Contributor" role, for the relevant Azure OpenAI resource.
  3. Deploy Correct Model:

    • Ensure that you are deploying the correct model when creating your Azure OpenAI deployment. Double-check that you have selected the "gpt-35-turbo-16k" model when setting up the deployment.
  4. Adjust Prompt Length:

    • Since the "gpt-35-turbo-16k" model supports up to 16k input tokens, review the length of your prompts. If your prompts are exceeding the supported length, consider splitting them into shorter segments or using a model that supports larger input sizes.
  5. Contact Azure Support:

    • If you’ve checked all of the above and the issue persists, consider reaching out to Azure Support for further assistance. They can help investigate the issue and provide additional guidance.

Q&A

Why does "gpt-35-turbo-16K" model lead to invalid model error?

It only supports the Chat Completions API.

What is the alternative model to overcome this error?

Use "gpt-35-turbo", which supports Completions API.

What is the key difference between the two models?

"gpt-35-turbo-16k" supports up to 16k input tokens, "gpt-35-turbo" supports up to 4k input tokens.

Video Explanation:

The following video, titled "GTA V | How to fix invalid error - YouTube", provides additional insights and in-depth exploration related to the topics discussed in this post.

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