enables opus by default

src/config.ts

@@ -297,6 +297,7 @@ export const config: Config = {
     "gpt4-32k",
     "gpt4-turbo",
     "claude",
+    "claude-opus",
     "gemini-pro",
     "mistral-tiny",
     "mistral-small",

src/proxy/anthropic.ts

@@ -16,6 +16,7 @@ import {
   ProxyResHandlerWithBody,
   createOnProxyResHandler,
 } from "./middleware/response";
+import { HttpError } from "../shared/errors";
 
 const CLAUDE_3_COMPAT_MODEL =
   process.env.CLAUDE_3_COMPAT_MODEL || "claude-3-sonnet-20240229";
@@ -249,6 +250,7 @@ anthropicRouter.post(
 anthropicRouter.post(
   "/v1/claude-3/complete",
   ipLimiter,
+  handleCompatibilityRequest,
   createPreprocessorMiddleware(
     { inApi: "anthropic-text", outApi: "anthropic-chat", service: "anthropic" },
     {
@@ -258,6 +260,28 @@ anthropicRouter.post(
   anthropicProxy
 );
 
+export function handleCompatibilityRequest(req: Request, res: any, next: any) {
+  const alreadyInChatFormat = Boolean(req.body.messages);
+  const alreadyUsingClaude3 = req.body.model?.includes("claude-3");
+  if (!alreadyInChatFormat && !alreadyUsingClaude3) {
+    next();
+  }
+
+  if (alreadyInChatFormat) {
+    throw new HttpError(
+      400,
+      "Your request is already using the new API format and does not need the compatibility endpoint. Use the /proxy/anthropic endpoint instead."
+    );
+  }
+
+  if (alreadyUsingClaude3) {
+    throw new HttpError(
+      400,
+      "Your request already includes the new model identifier and does not need the compatibility endpoint. Use the /proxy/anthropic endpoint instead."
+    );
+  }
+}
+
 function maybeReassignModel(req: Request) {
   const model = req.body.model;
   if (!model.startsWith("gpt-")) return;

src/proxy/aws.ts

@@ -16,7 +16,7 @@ import {
   ProxyResHandlerWithBody,
   createOnProxyResHandler,
 } from "./middleware/response";
-import { transformAnthropicChatResponseToAnthropicText } from "./anthropic";
+import { handleCompatibilityRequest, transformAnthropicChatResponseToAnthropicText } from "./anthropic";
 
 const LATEST_AWS_V2_MINOR_VERSION = "1";
 const CLAUDE_3_COMPAT_MODEL = "anthropic.claude-3-sonnet-20240229-v1:0";
@@ -187,6 +187,7 @@ awsRouter.post(
 awsRouter.post(
   "/v1/claude-3/complete",
   ipLimiter,
+  handleCompatibilityRequest,
   createPreprocessorMiddleware(
     { inApi: "anthropic-text", outApi: "anthropic-chat", service: "aws" },
     {