fix: correct completion endpoint when logprobs missing (#550)

Author: iBotPeaches

src/Responses/Completions/CreateResponseChoice.php

@@ -21,7 +21,9 @@ public static function from(array $attributes): self
         return new self(
             $attributes['text'],
             $attributes['index'],
-            $attributes['logprobs'] ? CreateResponseChoiceLogprobs::from($attributes['logprobs']) : null,
+            isset($attributes['logprobs'])
+                ? CreateResponseChoiceLogprobs::from($attributes['logprobs'])
+                : null,
             $attributes['finish_reason'],
         );
     }

tests/Responses/Completions/CreateResponseChoice.php

@@ -13,6 +13,18 @@
         ->finishReason->toBeIn(['length', null]);
 });
 
+test('from with missing logprobs', function () {
+    $payload = completion()['choices'][0];
+    unset($payload['logprobs']);
+    $result = CreateResponseChoice::from($payload);
+
+    expect($result)
+        ->text->toBe("el, she elaborates more on the Corruptor's role, suggesting K")
+        ->index->toBe(0)
+        ->logprobs->toBeNull()
+        ->finishReason->toBeIn(['length', null]);
+});
+
 test('to array', function () {
     $result = CreateResponseChoice::from(completion()['choices'][0]);