diff --git a/src/Responses/Responses/Output/OutputImageGenerationToolCall.php b/src/Responses/Responses/Output/OutputImageGenerationToolCall.php
index c4c1c0c8..7e5abb84 100644
--- a/src/Responses/Responses/Output/OutputImageGenerationToolCall.php
+++ b/src/Responses/Responses/Output/OutputImageGenerationToolCall.php
@@ -9,7 +9,7 @@
 use OpenAI\Testing\Responses\Concerns\Fakeable;
 
 /**
- * @phpstan-type OutputImageGenerationToolCallType array{id: string, result?: string|null, status: string, type: 'image_generation_call'}
+ * @phpstan-type OutputImageGenerationToolCallType array{id: string, result?: string|null, status: string, type: 'image_generation_call', action?: string|null, background?: string|null, output_format?: string|null, quality?: string|null, revised_prompt?: string|null, size?: string|null}
  *
  * @implements ResponseContract<OutputImageGenerationToolCallType>
  */
@@ -30,6 +30,12 @@ private function __construct(
         public readonly ?string $result,
         public readonly string $status,
         public readonly string $type,
+        public readonly ?string $action,
+        public readonly ?string $background,
+        public readonly ?string $outputFormat,
+        public readonly ?string $quality,
+        public readonly ?string $revisedPrompt,
+        public readonly ?string $size,
     ) {}
 
     /**
@@ -42,6 +48,12 @@ public static function from(array $attributes): self
             result: $attributes['result'] ?? null,
             status: $attributes['status'],
             type: $attributes['type'],
+            action: $attributes['action'] ?? null,
+            background: $attributes['background'] ?? null,
+            outputFormat: $attributes['output_format'] ?? null,
+            quality: $attributes['quality'] ?? null,
+            revisedPrompt: $attributes['revised_prompt'] ?? null,
+            size: $attributes['size'] ?? null,
         );
     }
 
@@ -55,6 +67,12 @@ public function toArray(): array
             'result' => $this->result,
             'status' => $this->status,
             'type' => $this->type,
+            'action' => $this->action,
+            'background' => $this->background,
+            'output_format' => $this->outputFormat,
+            'quality' => $this->quality,
+            'revised_prompt' => $this->revisedPrompt,
+            'size' => $this->size,
         ];
     }
 }
diff --git a/tests/Fixtures/Responses.php b/tests/Fixtures/Responses.php
index 452e1cdf..7d2438f2 100644
--- a/tests/Fixtures/Responses.php
+++ b/tests/Fixtures/Responses.php
@@ -702,6 +702,25 @@ function outputCustomToolCall(): array
     ];
 }
 
+/**
+ * @return array<string, mixed>
+ */
+function outputImageGenerationToolCall(): array
+{
+    return [
+        'id' => 'ig_67ccf18f64008190a39b619f4c8455ef087bb177ab789d5c',
+        'result' => 'iVBORw0KGgoAAAAN...',
+        'status' => 'completed',
+        'type' => 'image_generation_call',
+        'action' => 'generate',
+        'background' => 'opaque',
+        'output_format' => 'webp',
+        'quality' => 'high',
+        'revised_prompt' => 'This is a revised prompt.',
+        'size' => '1536x1024',
+    ];
+}
+
 /**
  * @return array<string, mixed>
  */
diff --git a/tests/Fixtures/Streams/ResponseImageGenerationCreate.txt b/tests/Fixtures/Streams/ResponseImageGenerationCreate.txt
index 7d00cf7e..ae3bca15 100644
--- a/tests/Fixtures/Streams/ResponseImageGenerationCreate.txt
+++ b/tests/Fixtures/Streams/ResponseImageGenerationCreate.txt
@@ -1,35 +1,50 @@
-data: {"type":"response.created","sequence_number":0,"response":{"id":"resp_684eb11908b881a180caf1a8d0aadaed0c3243c98c3d50bb","object":"response","created_at":1749987609,"status":"in_progress","background":false,"error":null,"incomplete_details":null,"instructions":null,"max_output_tokens":null,"model":"gpt-4.1-mini-2025-04-14","output":[],"parallel_tool_calls":true,"previous_response_id":null,"reasoning":{"effort":null,"summary":null},"service_tier":"auto","store":true,"temperature":1.0,"text":{"format":{"type":"text"}},"tool_choice":"auto","tools":[{"type":"image_generation","background":"auto","moderation":"auto","n":1,"output_compression":100,"output_format":"png","quality":"low","size":"1024x1024"}],"top_p":1.0,"truncation":"disabled","usage":null,"user":null,"metadata":{}}}
-data: {"type":"response.in_progress","sequence_number":1,"response":{"id":"resp_684eb11908b881a180caf1a8d0aadaed0c3243c98c3d50bb","object":"response","created_at":1749987609,"status":"in_progress","background":false,"error":null,"incomplete_details":null,"instructions":null,"max_output_tokens":null,"model":"gpt-4.1-mini-2025-04-14","output":[],"parallel_tool_calls":true,"previous_response_id":null,"reasoning":{"effort":null,"summary":null},"service_tier":"auto","store":true,"temperature":1.0,"text":{"format":{"type":"text"}},"tool_choice":"auto","tools":[{"type":"image_generation","background":"auto","moderation":"auto","n":1,"output_compression":100,"output_format":"png","quality":"low","size":"1024x1024"}],"top_p":1.0,"truncation":"disabled","usage":null,"user":null,"metadata":{}}}
-data: {"type":"response.output_item.added","sequence_number":2,"output_index":0,"item":{"id":"ig_684eb119786c81a19939e1cb5384033f0c3243c98c3d50bb","type":"image_generation_call","status":"in_progress"}}
-data: {"type":"response.image_generation_call.in_progress","sequence_number":3,"output_index":0,"item_id":"ig_684eb119786c81a19939e1cb5384033f0c3243c98c3d50bb"}
-data: {"type":"response.image_generation_call.generating","sequence_number":4,"output_index":0,"item_id":"ig_684eb119786c81a19939e1cb5384033f0c3243c98c3d50bb"}
-data: {"type":"response.image_generation_call.partial_image","sequence_number":5,"output_index":0,"item_id":"ig_684eb119786c81a19939e1cb5384033f0c3243c98c3d50bb","partial_image_index":0,"partial_image_b64":"R0lGODlhAQABAAAAACw=","size":"1024x1024","quality":"low","background":"opaque","output_format":"png"}
-data: {"type":"response.image_generation_call.partial_image","sequence_number":6,"output_index":0,"item_id":"ig_684eb119786c81a19939e1cb5384033f0c3243c98c3d50bb","partial_image_index":1,"partial_image_b64":"iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNk+A8AAQUBAScY42YAAAAASUVORK5CYII=","size":"1024x1024","quality":"low","background":"opaque","output_format":"png"}
-data: {"type":"response.image_generation_call.completed","sequence_number":7,"output_index":0,"item_id":"ig_684eb119786c81a19939e1cb5384033f0c3243c98c3d50bb"}
-data: {"type":"response.output_item.done","sequence_number":8,"output_index":0,"item":{"id":"ig_684eb119786c81a19939e1cb5384033f0c3243c98c3d50bb","type":"image_generation_call","status":"completed","background":"opaque","output_format":"png","quality":"low","result":"","revised_prompt":"A single black line forming a perfect circle on a white background","size":"1024x1024"}}
-data: {"type":"response.output_item.added","sequence_number":9,"output_index":1,"item":{"id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","type":"message","status":"in_progress","content":[],"role":"assistant"}}
-data: {"type":"response.content_part.added","sequence_number":10,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"part":{"type":"output_text","annotations":[],"text":""}}
-data: {"type":"response.output_text.delta","sequence_number":11,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":"Here"}
-data: {"type":"response.output_text.delta","sequence_number":12,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" is"}
-data: {"type":"response.output_text.delta","sequence_number":13,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" a"}
-data: {"type":"response.output_text.delta","sequence_number":14,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" single"}
-data: {"type":"response.output_text.delta","sequence_number":15,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" black"}
-data: {"type":"response.output_text.delta","sequence_number":16,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" line"}
-data: {"type":"response.output_text.delta","sequence_number":17,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" in"}
-data: {"type":"response.output_text.delta","sequence_number":18,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" a"}
-data: {"type":"response.output_text.delta","sequence_number":19,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" perfect"}
-data: {"type":"response.output_text.delta","sequence_number":20,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" circle"}
-data: {"type":"response.output_text.delta","sequence_number":21,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":"."}
-data: {"type":"response.output_text.delta","sequence_number":22,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" Let"}
-data: {"type":"response.output_text.delta","sequence_number":23,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" me"}
-data: {"type":"response.output_text.delta","sequence_number":24,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" know"}
-data: {"type":"response.output_text.delta","sequence_number":25,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" if"}
-data: {"type":"response.output_text.delta","sequence_number":26,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" you"}
-data: {"type":"response.output_text.delta","sequence_number":27,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" need"}
-data: {"type":"response.output_text.delta","sequence_number":28,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" any"}
-data: {"type":"response.output_text.delta","sequence_number":29,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":" modifications"}
-data: {"type":"response.output_text.delta","sequence_number":30,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"delta":"."}
-data: {"type":"response.output_text.done","sequence_number":31,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"text":"Here is a single black line in a perfect circle. Let me know if you need any modifications."}
-data: {"type":"response.content_part.done","sequence_number":32,"item_id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","output_index":1,"content_index":0,"part":{"type":"output_text","annotations":[],"text":"Here is a single black line in a perfect circle. Let me know if you need any modifications."}}
-data: {"type":"response.output_item.done","sequence_number":33,"output_index":1,"item":{"id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","type":"message","status":"completed","content":[{"type":"output_text","annotations":[],"text":"Here is a single black line in a perfect circle. Let me know if you need any modifications."}],"role":"assistant"}}
-data: {"type":"response.completed","sequence_number":34,"response":{"id":"resp_684eb11908b881a180caf1a8d0aadaed0c3243c98c3d50bb","object":"response","created_at":1749987609,"status":"completed","background":false,"error":null,"incomplete_details":null,"instructions":null,"max_output_tokens":null,"model":"gpt-4.1-mini-2025-04-14","output":[{"id":"ig_684eb119786c81a19939e1cb5384033f0c3243c98c3d50bb","type":"image_generation_call","status":"completed","background":"opaque","output_format":"png","quality":"low","result":"iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNk+A8AAQUBAScY42YAAAAASUVORK5CYII=","revised_prompt":"A single black line forming a perfect circle on a white background","size":"1024x1024"},{"id":"msg_684eb127559081a197c4584b23ba6b6a0c3243c98c3d50bb","type":"message","status":"completed","content":[{"type":"output_text","annotations":[],"text":"Here is a single black line in a perfect circle. Let me know if you need any modifications."}],"role":"assistant"}],"parallel_tool_calls":true,"previous_response_id":null,"reasoning":{"effort":null,"summary":null},"service_tier":"default","store":true,"temperature":1.0,"text":{"format":{"type":"text"}},"tool_choice":"auto","tools":[{"type":"image_generation","background":"auto","moderation":"auto","n":1,"output_compression":100,"output_format":"png","quality":"low","size":"1024x1024"}],"top_p":1.0,"truncation":"disabled","usage":{"input_tokens":3902,"input_tokens_details":{"cached_tokens":0},"output_tokens":46,"output_tokens_details":{"reasoning_tokens":0},"total_tokens":3948},"user":null,"metadata":{}}}
+event: response.created
+data: {"type":"response.created","response":{"id":"resp_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","object":"response","created_at":1741484430,"status":"in_progress","background":false,"completed_at":null,"error":null,"frequency_penalty":0.0,"incomplete_details":null,"instructions":null,"max_output_tokens":null,"max_tool_calls":null,"model":"gpt-5-nano-2025-08-07","output":[],"parallel_tool_calls":true,"presence_penalty":0.0,"previous_response_id":null,"prompt_cache_key":null,"prompt_cache_retention":null,"reasoning":{"effort":"medium","summary":null},"safety_identifier":null,"service_tier":"auto","store":true,"temperature":1.0,"text":{"format":{"type":"text"},"verbosity":"medium"},"tool_choice":"auto","tools":[{"type":"image_generation","background":"auto","model":"gpt-image-1","moderation":"auto","n":1,"output_compression":100,"output_format":"png","quality":"auto","size":"auto"}],"top_logprobs":0,"top_p":1.0,"truncation":"disabled","usage":null,"user":null,"metadata":{}},"sequence_number":0}
+
+event: response.in_progress
+data: {"type":"response.in_progress","response":{"id":"resp_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","object":"response","created_at":1741484430,"status":"in_progress","background":false,"completed_at":null,"error":null,"frequency_penalty":0.0,"incomplete_details":null,"instructions":null,"max_output_tokens":null,"max_tool_calls":null,"model":"gpt-5-nano-2025-08-07","output":[],"parallel_tool_calls":true,"presence_penalty":0.0,"previous_response_id":null,"prompt_cache_key":null,"prompt_cache_retention":null,"reasoning":{"effort":"medium","summary":null},"safety_identifier":null,"service_tier":"auto","store":true,"temperature":1.0,"text":{"format":{"type":"text"},"verbosity":"medium"},"tool_choice":"auto","tools":[{"type":"image_generation","background":"auto","model":"gpt-image-1","moderation":"auto","n":1,"output_compression":100,"output_format":"png","quality":"auto","size":"auto"}],"top_logprobs":0,"top_p":1.0,"truncation":"disabled","usage":null,"user":null,"metadata":{}},"sequence_number":1}
+
+event: response.output_item.added
+data: {"type":"response.output_item.added","item":{"id":"rs_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","type":"reasoning","summary":[]},"output_index":0,"sequence_number":2}
+
+event: response.output_item.done
+data: {"type":"response.output_item.done","item":{"id":"rs_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","type":"reasoning","summary":[]},"output_index":0,"sequence_number":3}
+
+event: response.output_item.added
+data: {"type":"response.output_item.added","item":{"id":"ig_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","type":"image_generation_call","status":"in_progress"},"output_index":1,"sequence_number":4}
+
+event: response.image_generation_call.in_progress
+data: {"type":"response.image_generation_call.in_progress","item_id":"ig_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","output_index":1,"sequence_number":5}
+
+event: response.image_generation_call.generating
+data: {"type":"response.image_generation_call.generating","item_id":"ig_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","output_index":1,"sequence_number":6}
+
+event: response.image_generation_call.partial_image
+data: {"type":"response.image_generation_call.partial_image","background":"opaque","item_id":"ig_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","output_format":"png","output_index":1,"partial_image_b64":"iVBORw0KGgoAAAAN...","partial_image_index":0,"quality":"high","sequence_number":7,"size":"1536x1024"}
+
+event: response.output_item.done
+data: {"type":"response.output_item.done","item":{"id":"ig_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","type":"image_generation_call","status":"generating","action":"generate","background":"opaque","output_format":"png","quality":"high","result":"iVBORw0KGgoAAAAN...","revised_prompt":"This is a revised prompt.","size":"1536x1024"},"output_index":1,"sequence_number":8}
+
+event: response.output_item.added
+data: {"type":"response.output_item.added","item":{"id":"rs_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","type":"reasoning","summary":[]},"output_index":2,"sequence_number":9}
+
+event: response.output_item.done
+data: {"type":"response.output_item.done","item":{"id":"rs_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","type":"reasoning","summary":[]},"output_index":2,"sequence_number":10}
+
+event: response.output_item.added
+data: {"type":"response.output_item.added","item":{"id":"msg_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","type":"message","status":"in_progress","content":[],"role":"assistant"},"output_index":3,"sequence_number":11}
+
+event: response.content_part.added
+data: {"type":"response.content_part.added","content_index":0,"item_id":"msg_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","output_index":3,"part":{"type":"output_text","annotations":[],"logprobs":[],"text":""},"sequence_number":12}
+
+event: response.output_text.done
+data: {"type":"response.output_text.done","content_index":0,"item_id":"msg_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","logprobs":[],"output_index":3,"sequence_number":13,"text":""}
+
+event: response.content_part.done
+data: {"type":"response.content_part.done","content_index":0,"item_id":"msg_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","output_index":3,"part":{"type":"output_text","annotations":[],"logprobs":[],"text":""},"sequence_number":14}
+
+event: response.output_item.done
+data: {"type":"response.output_item.done","item":{"id":"msg_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","type":"message","status":"completed","content":[{"type":"output_text","annotations":[],"logprobs":[],"text":""}],"role":"assistant"},"output_index":3,"sequence_number":15}
+
+event: response.completed
+data: {"type":"response.completed","response":{"id":"resp_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","object":"response","created_at":1741484430,"status":"completed","background":false,"completed_at":1741484430,"error":null,"frequency_penalty":0.0,"incomplete_details":null,"instructions":null,"max_output_tokens":null,"max_tool_calls":null,"model":"gpt-5-nano-2025-08-07","output":[{"id":"rs_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","type":"reasoning","summary":[]},{"id":"ig_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","type":"image_generation_call","status":"generating","action":"generate","background":"opaque","output_format":"png","quality":"high","result":"iVBORw0KGgoAAAAN...","revised_prompt":"This is a revised prompt.","size":"1536x1024"},{"id":"rs_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","type":"reasoning","summary":[]},{"id":"msg_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c","type":"message","status":"completed","content":[{"type":"output_text","annotations":[],"logprobs":[],"text":""}],"role":"assistant"}],"parallel_tool_calls":true,"presence_penalty":0.0,"previous_response_id":null,"prompt_cache_key":null,"prompt_cache_retention":null,"reasoning":{"effort":"medium","summary":null},"safety_identifier":null,"service_tier":"default","store":true,"temperature":1.0,"text":{"format":{"type":"text"},"verbosity":"medium"},"tool_choice":"auto","tools":[{"type":"image_generation","background":"auto","model":"gpt-image-1","moderation":"auto","n":1,"output_compression":100,"output_format":"png","quality":"auto","size":"auto"}],"top_logprobs":0,"top_p":1.0,"truncation":"disabled","usage":{"input_tokens":2048,"input_tokens_details":{"cached_tokens":0},"output_tokens":2048,"output_tokens_details":{"reasoning_tokens":2048},"total_tokens":4096},"user":null,"metadata":{}},"sequence_number":16}
diff --git a/tests/Responses/Responses/Output/OutputCodeInterpreterToolCall.php b/tests/Responses/Responses/Output/OutputCodeInterpreterToolCall.php
index a58e1c14..9a392563 100644
--- a/tests/Responses/Responses/Output/OutputCodeInterpreterToolCall.php
+++ b/tests/Responses/Responses/Output/OutputCodeInterpreterToolCall.php
@@ -27,5 +27,5 @@
 
     expect($response->toArray())
         ->toBeArray()
-        ->toBe(OutputCodeInterpreterToolCall());
+        ->toBe(outputCodeInterpreterToolCall());
 });
diff --git a/tests/Responses/Responses/Output/OutputImageGenerationToolCall.php b/tests/Responses/Responses/Output/OutputImageGenerationToolCall.php
new file mode 100644
index 00000000..9b0d8a77
--- /dev/null
+++ b/tests/Responses/Responses/Output/OutputImageGenerationToolCall.php
@@ -0,0 +1,43 @@
+<?php
+
+use OpenAI\Responses\Responses\Output\OutputImageGenerationToolCall;
+
+test('from', function () {
+    $response = OutputImageGenerationToolCall::from(outputImageGenerationToolCall());
+
+    expect($response)
+        ->toBeInstanceOf(OutputImageGenerationToolCall::class)
+        ->id->toBe('ig_67ccf18f64008190a39b619f4c8455ef087bb177ab789d5c')
+        ->result->toBe('iVBORw0KGgoAAAAN...')
+        ->status->toBe('completed')
+        ->type->toBe('image_generation_call')
+        ->action->toBe('generate')
+        ->background->toBe('opaque')
+        ->outputFormat->toBe('webp')
+        ->quality->toBe('high')
+        ->revisedPrompt->toBe('This is a revised prompt.')
+        ->size->toBe('1536x1024');
+});
+
+test('as array accessible', function () {
+    $response = OutputImageGenerationToolCall::from(outputImageGenerationToolCall());
+
+    expect($response['id'])->toBe('ig_67ccf18f64008190a39b619f4c8455ef087bb177ab789d5c')
+        ->and($response['result'])->toBe('iVBORw0KGgoAAAAN...')
+        ->and($response['status'])->toBe('completed')
+        ->and($response['type'])->toBe('image_generation_call')
+        ->and($response['action'])->toBe('generate')
+        ->and($response['background'])->toBe('opaque')
+        ->and($response['output_format'])->toBe('webp')
+        ->and($response['quality'])->toBe('high')
+        ->and($response['revised_prompt'])->toBe('This is a revised prompt.')
+        ->and($response['size'])->toBe('1536x1024');
+});
+
+test('to array', function () {
+    $response = OutputImageGenerationToolCall::from(outputImageGenerationToolCall());
+
+    expect($response->toArray())
+        ->toBeArray()
+        ->toBe(outputImageGenerationToolCall());
+});