From 840cb9fa531c5a7d6f4d3bc05827e24a4332c2a1 Mon Sep 17 00:00:00 2001
From: Dmitrii Medvedev <dima7711@gmail.com>
Date: Mon, 18 Aug 2025 16:43:12 +0300
Subject: [PATCH] Make ChoiceDeltaToolCall.index optional

---
 Sources/OpenAI/Public/Models/ChatStreamResult.swift | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Sources/OpenAI/Public/Models/ChatStreamResult.swift b/Sources/OpenAI/Public/Models/ChatStreamResult.swift
index 05052467..c1f30216 100644
--- a/Sources/OpenAI/Public/Models/ChatStreamResult.swift
+++ b/Sources/OpenAI/Public/Models/ChatStreamResult.swift
@@ -71,7 +71,7 @@ public struct ChatStreamResult: Codable, Equatable, Sendable {
 
             public struct ChoiceDeltaToolCall: Codable, Equatable, Sendable {
 
-                public let index: Int
+                public let index: Int?
                 /// The ID of the tool call.
                 public let id: String?
                 /// The function that the model called.