how to use gpt-4?

[SimonB97]

Hi, nice work!

sadly however, i've not been able to change the model to gpt-4..
if i change this line like so in the llm.py

llm_predictor = LLMPredictor(llm=ChatOpenAI(
    temperature=0.2, model_name="gpt-4"))

i am seeing this error in the interface JSON.parse: unexpected character at line 1 column 1 of the JSON data.
and this in the shell

error - FetchError: request to http://127.0.0.1:5000/upload failed, reason: connect ECONNREFUSED 127.0.0.1:5000
    at ClientRequest.<anonymous> (file:///C:/Users/sbene/Projects/ChatFiles-main/chatfiles-ui/node_modules/node-fetch/src/index.js:108:11)
    at ClientRequest.emit (node:events:525:35)
    at Socket.socketErrorListener (node:_http_client:494:9)
    at Socket.emit (node:events:513:28)
    at emitErrorNT (node:internal/streams/destroy:151:8)
    at emitErrorCloseNT (node:internal/streams/destroy:116:3)
    at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
  type: 'system',
  errno: 'ECONNREFUSED',
  code: 'ECONNREFUSED',
  erroredSysCall: 'connect',
  page: '/api/upload'
}

[guangzhengli]

Currently, the llama index can support GPT-4. This error message does not seem to be caused by GPT-4. Can you provide more detailed log information? I do not currently have an account for GPT-4, so I am unable to test it. Apologies for any inconvenience.

[guangzhengli]

We will support multi OpenAI model versions soon.

[guangzhengli]

GPT-4 is already supported now !! #97