Responses API error "400 The file type you uploaded is not supported. Please try again with a pdf"

API Bugs
1

It works fine for the past two days, but it errors since today. The request is:

{
    "model": "gpt-4.1",
    "instructions": "You are a skilled Python programmer with strong expertise in data analysis. You are provided with a data.json file. Your task is to answer user questions by analyzing the data using the structure defined in the JSON schema below.\n\nUse the schema to understand the data layout and provide accurate, relevant insights based on user queries.\n\n<json-schema>...</json-schema>",
    "input": [
      {
        "role": "user",
        "content": [
          {
            "type": "input_text",
            "text": "Find the single cheapest price."
          },
          {
            "type": "input_file",
            "filename": "data.json",
            "file_data": "data:application/json;base64,..."
          }
        ]
      }
    ],
    "tools": [
      {
        "type": "code_interpreter",
        "container": {
          "type": "auto"
        }
      }
    ],
    "tool_choice": "required",
    "temperature": 0,
    "include": [
      "code_interpreter_call.outputs"
    ]
  }

The error message: 400 The file type you uploaded is not supported. Please try again with a pdf

2 Likes
2

Same here, was working fine, but now, got the same error @OpenAI_Support