diff --git a/packages/proxy/schema/index.ts b/packages/proxy/schema/index.ts
index 43dbc16a..0b64cb12 100644
--- a/packages/proxy/schema/index.ts
+++ b/packages/proxy/schema/index.ts
@@ -559,6 +559,7 @@ export const AvailableEndpointTypes: { [name: string]: ModelEndpointType[] } = {
   "publishers/mistralai/models/mistral-large-2411": ["vertex"],
   "publishers/mistralai/models/mistral-nemo": ["vertex"],
   "publishers/mistralai/models/codestral-2501": ["vertex"],
+  "publishers/qwen/models/qwen3-235b-a22b-instruct-2507-maas": ["vertex"],
   "publishers/anthropic/models/claude-sonnet-4-5": ["vertex"],
   "publishers/anthropic/models/claude-sonnet-4-5@20250929": ["vertex"],
   "publishers/anthropic/models/claude-sonnet-4": ["vertex"],
diff --git a/packages/proxy/schema/model_list.json b/packages/proxy/schema/model_list.json
index 957c7e60..acf083bc 100644
--- a/packages/proxy/schema/model_list.json
+++ b/packages/proxy/schema/model_list.json
@@ -4943,6 +4943,16 @@
     "max_input_tokens": 262144,
     "max_output_tokens": 16384
   },
+  "publishers/qwen/models/qwen3-235b-a22b-instruct-2507-maas": {
+    "format": "openai",
+    "flavor": "chat",
+    "input_cost_per_mil_tokens": 0.22,
+    "output_cost_per_mil_tokens": 0.88,
+    "displayName": "Qwen3 235B A22B Instruct 2507",
+    "max_input_tokens": 262144,
+    "max_output_tokens": 16384,
+    "locations": ["global", "us-south1"]
+  },
   "accounts/fireworks/models/deepseek-v3p2": {
     "format": "openai",
     "flavor": "chat",
diff --git a/packages/proxy/src/proxy.ts b/packages/proxy/src/proxy.ts
index a80645e3..721f3db8 100644
--- a/packages/proxy/src/proxy.ts
+++ b/packages/proxy/src/proxy.ts
@@ -1952,10 +1952,13 @@ async function fetchOpenAI(
     const location = locations[Math.floor(Math.random() * locations.length)];
     const baseURL = getVertexBaseUrl(api_base, location);
 
-    if (bodyData?.model?.startsWith("publishers/meta")) {
+    if (
+      bodyData?.model?.startsWith("publishers/meta") ||
+      bodyData?.model?.startsWith("publishers/qwen")
+    ) {
       // Use the OpenAPI endpoint.
       fullURL = new URL(
-        `${baseURL}/v1beta1/projects/${project}/locations/${location}/endpoints/openapi/chat/completions`,
+        `${baseURL}/v1/projects/${project}/locations/${location}/endpoints/openapi/chat/completions`,
       );
       bodyData.model = bodyData.model.replace(
         /^publishers\/(\w+)\/models\//,