diff --git a/src/app/api/providers/[id]/models/route.js b/src/app/api/providers/[id]/models/route.js
index 7418d826..106130f2 100644
--- a/src/app/api/providers/[id]/models/route.js
+++ b/src/app/api/providers/[id]/models/route.js
@@ -2,7 +2,7 @@ import { NextResponse } from "next/server";
 import { getProviderConnectionById } from "@/models";
 import { isOpenAICompatibleProvider, isAnthropicCompatibleProvider } from "@/shared/constants/providers";
 import { GEMINI_CONFIG } from "@/lib/oauth/constants/oauth";
-import { refreshGoogleToken, updateProviderCredentials } from "@/sse/services/tokenRefresh";
+import { refreshGoogleToken, refreshCodexToken, updateProviderCredentials } from "@/sse/services/tokenRefresh";
 import { resolveOllamaLocalHost } from "open-sse/config/providers.js";
 import { getModelsByProviderId } from "open-sse/config/providerModels.js";
 import { resolveKiroModels } from "open-sse/services/kiroModels.js";
@@ -13,6 +13,13 @@ import { resolveConnectionProxyConfig } from "@/lib/network/connectionProxy";
 
 const GEMINI_CLI_MODELS_URL = "https://cloudcode-pa.googleapis.com/v1internal:fetchAvailableModels";
 
+// The /codex/models endpoint gates each entry by minimal_client_version against this
+// value, and codex CLI's own manifest (openai/codex codex-rs/models-manager/models.json)
+// already requires 0.144.0 for its newest models, so a stale client_version here comes
+// back 200 with those entries quietly missing instead of erroring.
+const CODEX_CLIENT_VERSION = "0.144.6";
+const CODEX_MODELS_URL = `https://chatgpt.com/backend-api/codex/models?client_version=${CODEX_CLIENT_VERSION}`;
+
 const parseOpenAIStyleModels = (data) => {
   if (Array.isArray(data)) return data;
   return data?.data || data?.models || data?.results || [];
@@ -157,12 +164,20 @@ const PROVIDER_MODELS_CONFIG = {
     parseResponse: (data) => data.data || []
   },
   codex: {
-    url: "https://chatgpt.com/backend-api/codex/models?client_version=1.0.0",
-    method: "GET",
-    headers: { "Content-Type": "application/json", "Accept": "application/json" },
-    authHeader: "Authorization",
-    authPrefix: "Bearer ",
-    parseResponse: parseCodexModels
+    customResolver: buildOAuthResolver({
+      refreshFn: (conn) => refreshCodexToken(conn.refreshToken),
+      fetchFn: (token) => fetch(CODEX_MODELS_URL, {
+        method: "GET",
+        headers: {
+          "Content-Type": "application/json",
+          "Accept": "application/json",
+          "Authorization": `Bearer ${token}`,
+          "originator": "codex_cli_rs"
+        }
+      }),
+      parseFn: parseCodexModels,
+      errorLabel: "Failed to fetch Codex models"
+    })
   },
   antigravity: {
     url: "https://daily-cloudcode-pa.sandbox.googleapis.com/v1internal:models",