Advice on model selection

[simonziegler]

I am revisiting some code I wrote in Q1 this year, where I use Models.TextDavinciV3 to create some code from a prompt. I am looking to update beyond GPT-3, and when I use either Models.Gpt_3_5_Turbo or Models.Gpt_4 I get an error as below. What model should I use please?

System.Exception: This is a chat model and not supported in the v1/completions endpoint. Did you mean to use v1/chat/completions?

[kayhantolga]

Models.TextDavinciV3 is for completion API
Models.Gpt_3_5_Turbo and Models.Gpt_4 is for chat API.
More information please visit this documentation:
https://platform.openai.com/docs/models/model-endpoint-compatibility