v3.5.0

Added Structured Outputs support.

using OpenAI;

using var api = new OpenAiApi("API_KEY");

var response = await api.Chat.CreateChatCompletionAsAsync<Weather>(
    messages: ["Generate random weather."],
    model: CreateChatCompletionRequestModel.Gpt4oMini,
    jsonSerializerOptions: new JsonSerializerOptions
    {
        Converters = {new JsonStringEnumConverter()},
    });
// or (if you need trimmable/NativeAOT version)
var response = await api.Chat.CreateChatCompletionAsAsync(
    jsonTypeInfo: SourceGeneratedContext.Default.Weather,
    messages: ["Generate random weather."],
    model: CreateChatCompletionRequestModel.Gpt4oMini);

// response.Value1 contains the structured output
// response.Value2 contains the CreateChatCompletionResponse object

Weather:
Location: San Francisco, CA
Temperature: 65
Unit: Fahrenheit
Description: Partly cloudy with a light breeze and occasional sunshine.
Raw Response:
{"Location":"San Francisco, CA","Temperature":65,"Unit":"Fahrenheit","Description":"Partly cloudy with a light breeze and occasional sunshine."}

Additional code for trimmable/NativeAOT version:

[JsonSourceGenerationOptions(Converters = [typeof(JsonStringEnumConverter<Unit>)])]
[JsonSerializable(typeof(Weather))]
public partial class SourceGeneratedContext : JsonSerializerContext;

Full Changelog: v3.4.1...v3.5.0