feat: Replace default model used in server-v3 api spec examples

Author: stainless-app[bot]

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 8
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase%2Fstagehand-bc309fd00fe0507f4cbe3bc77fa27d0fbffeaa6e71998778da34de42608a67e8.yml
-openapi_spec_hash: 1db1af5c1b068bba1d652102f4454668
-config_hash: d6c6f623d03971bdba921650e5eb7e5f
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase%2Fstagehand-b969ce378479c79ee64c05127c0ed6c6ce2edbee017ecd037242fb618a5ebc9f.yml
+openapi_spec_hash: a24aabaa5214effb679808b7f2be0ad4
+config_hash: a962ae71493deb11a1c903256fb25386

README.md

@@ -276,7 +276,7 @@ use Stagehand\Core\Exceptions\RateLimitException;
 use Stagehand\Core\Exceptions\APIStatusException;
 
 try {
-  $response = $client->sessions->start(modelName: 'openai/gpt-5-nano');
+  $response = $client->sessions->start(modelName: 'openai/gpt-5.4-mini');
 } catch (APIConnectionException $e) {
   echo "The server could not be reached", PHP_EOL;
   var_dump($e->getPrevious());
@@ -322,7 +322,7 @@ $client = new Client(requestOptions: ['maxRetries' => 0]);
 
 // Or, configure per-request:
 $result = $client->sessions->start(
-  modelName: 'openai/gpt-5-nano', requestOptions: ['maxRetries' => 5]
+  modelName: 'openai/gpt-5.4-mini', requestOptions: ['maxRetries' => 5]
 );
 ```
 
@@ -340,7 +340,7 @@ Note: the `extra*` parameters of the same name overrides the documented paramete
 <?php
 
 $response = $client->sessions->start(
-  modelName: 'openai/gpt-5-nano',
+  modelName: 'openai/gpt-5.4-mini',
   requestOptions: [
     'extraQueryParams' => ['my_query_parameter' => 'value'],
     'extraBodyParams' => ['my_body_parameter' => 'value'],

tests/ClientTest.php

@@ -34,7 +34,7 @@ public function testDefaultHeaders(): void
             requestOptions: ['transporter' => $transporter],
         );
 
-        $client->sessions->start(modelName: 'openai/gpt-4o');
+        $client->sessions->start(modelName: 'openai/gpt-5.4-mini');
 
         $this->assertNotFalse($requested = $transporter->getRequests()[0] ?? false);
 

tests/Services/SessionsTest.php

@@ -69,7 +69,7 @@ public function testActWithOptionalParams(): void
             frameID: 'frameId',
             options: [
                 'model' => [
-                    'modelName' => 'openai/gpt-5-nano',
+                    'modelName' => 'openai/gpt-5.4-mini',
                     'apiKey' => 'sk-some-openai-api-key',
                     'baseURL' => 'https://api.openai.com/v1',
                     'headers' => ['foo' => 'string'],
@@ -136,15 +136,15 @@ public function testExecuteWithOptionalParams(): void
             agentConfig: [
                 'cua' => true,
                 'executionModel' => [
-                    'modelName' => 'openai/gpt-5-nano',
+                    'modelName' => 'openai/gpt-5.4-mini',
                     'apiKey' => 'sk-some-openai-api-key',
                     'baseURL' => 'https://api.openai.com/v1',
                     'headers' => ['foo' => 'string'],
                     'provider' => 'openai',
                 ],
                 'mode' => 'cua',
                 'model' => [
-                    'modelName' => 'openai/gpt-5-nano',
+                    'modelName' => 'openai/gpt-5.4-mini',
                     'apiKey' => 'sk-some-openai-api-key',
                     'baseURL' => 'https://api.openai.com/v1',
                     'headers' => ['foo' => 'string'],
@@ -259,7 +259,7 @@ public function testStart(): void
             $this->markTestSkipped('Mock server tests are disabled');
         }
 
-        $result = $this->client->sessions->start(modelName: 'openai/gpt-4o');
+        $result = $this->client->sessions->start(modelName: 'openai/gpt-5.4-mini');
 
         // @phpstan-ignore-next-line method.alreadyNarrowedType
         $this->assertInstanceOf(SessionStartResponse::class, $result);
@@ -273,7 +273,7 @@ public function testStartWithOptionalParams(): void
         }
 
         $result = $this->client->sessions->start(
-            modelName: 'openai/gpt-4o',
+            modelName: 'openai/gpt-5.4-mini',
             actTimeoutMs: 0,
             browser: [
                 'cdpURL' => 'ws://localhost:9222',