1# Message Batches — PHP
2 
3## Message Batches API
4 
5```php
6$batch = $client->messages->batches->create(requests: [
7    ['customId' => 'req-1', 'params' => ['model' => 'claude-opus-4-8', 'maxTokens' => 1024, 'messages' => [...]]],
8    ['customId' => 'req-2', 'params' => [...]],
9]);
10// Poll $client->messages->batches->retrieve($batch->id) until processingStatus === 'ended',
11// then iterate $client->messages->batches->results($batch->id).
12```
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