diff --git a/src/Transporters/HttpTransporter.php b/src/Transporters/HttpTransporter.php
index 0b1d8af6..880a85df 100644
--- a/src/Transporters/HttpTransporter.php
+++ b/src/Transporters/HttpTransporter.php
@@ -172,11 +172,16 @@ private function throwIfJsonError(ResponseInterface $response, string|ResponseIn
         }
 
         try {
-            /** @var array{error?: string|array{message: string|array<int, string>, type: string, code: string}} $data */
+            /** @var (array{error?: string|array{message: string|array<int, string>, type: string, code: string}})|(array{0?: array{error?: string|array{message: string|array<int, string>, code: string, status: string, type?: string}}}) $data */
             $data = json_decode($contents, true, flags: JSON_THROW_ON_ERROR);
 
             if (isset($data['error'])) {
                 throw new ErrorException($data['error'], $response);
+            } elseif (isset($data[0]['error'])) {
+                if (! isset($data[0]['error']['type']) && isset($data[0]['error']['status'])) {
+                    $data[0]['error']['type'] = $data[0]['error']['status'];
+                }
+                throw new ErrorException($data[0]['error'], $response);
             }
         } catch (JsonException $jsonException) {
             throw new UnserializableResponse($jsonException, $response);
diff --git a/tests/Transporters/HttpTransporter.php b/tests/Transporters/HttpTransporter.php
index 813b9e0e..eed44907 100644
--- a/tests/Transporters/HttpTransporter.php
+++ b/tests/Transporters/HttpTransporter.php
@@ -624,3 +624,53 @@
 
     $this->http->requestObject($payload);
 });
+
+test('error for gemini with invalid parameter', function (string $requestMethod) {
+    $payload = Payload::create('completions', [
+        'model' => 'gemini-2.5-flash',
+        'messages' => [
+            [
+                'role' => 'system',
+                'content' => 'You can use tools if needed.',
+            ],
+            [
+                'role' => 'user',
+                'content' => 'Yo',
+            ],
+        ],
+        'ddd' => 'auto',
+    ]);
+
+    $response = new Response(400, ['Content-Type' => 'application/json; charset=utf-8'], json_encode(
+        [[
+            'error' => [
+                'code' => 400,
+                'message' => 'Invalid JSON payload received. Unknown name "ddd": Cannot find field.',
+                'status' => 'INVALID_ARGUMENT',
+                'details' => [
+                    [
+                        '@type' => 'type.googleapis.com/google.rpc.BadRequest',
+                        'fieldViolations' => [
+                            [
+                                'description' => 'Invalid JSON payload received. Unknown name "ddd": Cannot find field.',
+                            ],
+                        ],
+                    ],
+                ],
+            ],
+        ]]
+    ));
+
+    $this->client
+        ->shouldReceive('sendRequest')
+        ->once()
+        ->andReturn($response);
+
+    expect(fn () => $this->http->$requestMethod($payload))
+        ->toThrow(function (ErrorException $e) {
+            expect($e->getMessage())->toBe('Invalid JSON payload received. Unknown name "ddd": Cannot find field.')
+                ->and($e->getErrorMessage())->toBe('Invalid JSON payload received. Unknown name "ddd": Cannot find field.')
+                ->and($e->getErrorCode())->toBe(400)
+                ->and($e->getErrorType())->toBe('INVALID_ARGUMENT');
+        });
+})->with('request methods');