adds preliminary gpt4o

src/proxy/middleware/request/preprocessors/validate-context-size.ts

@@ -54,6 +54,8 @@ export const validateContextSize: RequestPreprocessor = async (req) => {
   let modelMax: number;
   if (model.match(/gpt-3.5-turbo-16k/)) {
     modelMax = 16384;
+  } else if (model.match(/^gpt-4o/)) {
+    modelMax = 128000;
   } else if (model.match(/gpt-4-turbo(-\d{4}-\d{2}-\d{2})?$/)) {
     modelMax = 131072;
   } else if (model.match(/gpt-4-turbo(-preview)?$/)) {

src/proxy/openai.ts

@@ -28,6 +28,8 @@ import {
 
 // https://platform.openai.com/docs/models/overview
 export const KNOWN_OPENAI_MODELS = [
+  "gpt-4o",
+  "gpt-4o-2024-05-13",
   "gpt-4-turbo", // alias for latest gpt4-turbo stable
   "gpt-4-turbo-2024-04-09", // gpt4-turbo stable, with vision
   "gpt-4-turbo-preview", // alias for latest turbo preview