diff --git a/ui/litellm-dashboard/scripts/gen-api-types.mjs b/ui/litellm-dashboard/scripts/gen-api-types.mjs
index 974a391b747..fb5ae803e50 100644
--- a/ui/litellm-dashboard/scripts/gen-api-types.mjs
+++ b/ui/litellm-dashboard/scripts/gen-api-types.mjs
@@ -55,12 +55,17 @@ export function unsupportedPythonMessage(pythonCommand, version) {
   );
 }
 
-function assertSupportedPython(pythonCommand) {
+export function probePythonVersion(pythonCommand, cwd, exec = execFileSync) {
   const probe = "import sys; print('.'.join(map(str, sys.version_info[:2])))";
-  const stdout = execFileSync(pythonCommand[0], [...pythonCommand.slice(1), "-c", probe], {
+  const stdout = exec(pythonCommand[0], [...pythonCommand.slice(1), "-c", probe], {
+    cwd,
     encoding: "utf8",
   });
-  const version = parsePythonVersion(stdout);
+  return parsePythonVersion(stdout);
+}
+
+function assertSupportedPython(pythonCommand, cwd) {
+  const version = probePythonVersion(pythonCommand, cwd);
   if (!isSupportedPython(version)) {
     throw new Error(unsupportedPythonMessage(pythonCommand, version));
   }
@@ -89,7 +94,7 @@ function main() {
   ].join("\n");
 
   try {
-    assertSupportedPython(python);
+    assertSupportedPython(python, repoRoot);
 
     execFileSync(python[0], [...python.slice(1), "-c", dumpSpec, specPath], {
       cwd: repoRoot,
diff --git a/ui/litellm-dashboard/tests/gen-api-types.test.ts b/ui/litellm-dashboard/tests/gen-api-types.test.ts
index f6946b87632..412a340767d 100644
--- a/ui/litellm-dashboard/tests/gen-api-types.test.ts
+++ b/ui/litellm-dashboard/tests/gen-api-types.test.ts
@@ -2,6 +2,7 @@ import { describe, it, expect } from "vitest";
 import {
   resolvePythonCommand,
   parsePythonVersion,
+  probePythonVersion,
   isSupportedPython,
   unsupportedPythonMessage,
 } from "../scripts/gen-api-types.mjs";
@@ -49,6 +50,32 @@ describe("parsePythonVersion", () => {
   });
 });
 
+describe("probePythonVersion", () => {
+  it("probes the interpreter from the repo root, matching the spec-dump cwd", () => {
+    let seenCwd: string | undefined;
+    const exec = (_bin: string, _args: string[], opts: { cwd?: string }) => {
+      seenCwd = opts.cwd;
+      return "3.11\n";
+    };
+    const version = probePythonVersion(["python3"], repoRoot, exec);
+    expect(seenCwd).toBe(repoRoot);
+    expect(version).toEqual({ major: 3, minor: 11 });
+  });
+
+  it("resolves a repo-root-relative interpreter against the repo root, not the dashboard cwd", () => {
+    let seenBin: string | undefined;
+    let seenCwd: string | undefined;
+    const exec = (bin: string, _args: string[], opts: { cwd?: string }) => {
+      seenBin = bin;
+      seenCwd = opts.cwd;
+      return "3.12\n";
+    };
+    probePythonVersion([".venv/bin/python"], repoRoot, exec);
+    expect(seenBin).toBe(".venv/bin/python");
+    expect(seenCwd).toBe(repoRoot);
+  });
+});
+
 describe("isSupportedPython", () => {
   it("rejects the 3.9 interpreter that breaks on dataclass slots=True", () => {
     expect(isSupportedPython({ major: 3, minor: 9 })).toBe(false);