From da37b76105b0ce622e85e7bb242f65b83858753a Mon Sep 17 00:00:00 2001
From: seb <sebgreenbus@gmail.com>
Date: Fri, 25 Sep 2026 06:41:35 +0200
Subject: [PATCH] u

---
 src/providers/OpenRouterProvider.js | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/src/providers/OpenRouterProvider.js b/src/providers/OpenRouterProvider.js
index eb8dbfe..3d28926 100644
--- a/src/providers/OpenRouterProvider.js
+++ b/src/providers/OpenRouterProvider.js
@@ -154,22 +154,29 @@ class OpenRouterProvider {
             }
         }
 
-        // Reasoning (delta.reasoning or delta.reasoning_details)
-        if (choice.delta?.reasoning) {
-            result.reasoning = (result.reasoning || '') + choice.delta.reasoning;
-            onReasoning?.(result.reasoning);
-        }
+        // Reasoning (delta.reasoning, delta.reasoning_content, or delta.reasoning_details)
+        // OpenRouter may return both delta.reasoning and delta.reasoning_details for the same chunk.
+        // We assemble reasoning_details, but only append text once to result.reasoning.
+        let reasoningText = choice.delta?.reasoning || choice.delta?.reasoning_content || '';
 
         if (choice.delta?.reasoning_details) {
             if (!result.reasoning_details) result.reasoning_details = [];
+            let detailsText = '';
             for (const rd of choice.delta.reasoning_details) {
                 const slot = result.reasoning_details[rd.index] ||= { type: rd.type, format: rd.format, text: '' };
                 if (rd.text) {
                     slot.text += rd.text;
-                    result.reasoning = (result.reasoning || '') + rd.text;
-                    onReasoning?.(result.reasoning);
+                    detailsText += rd.text;
                 }
             }
+            if (!reasoningText && detailsText) {
+                reasoningText = detailsText;
+            }
+        }
+
+        if (reasoningText) {
+            result.reasoning = (result.reasoning || '') + reasoningText;
+            onReasoning?.(result.reasoning);
         }
 
         if (choice.finish_reason) result.finish_reason = choice.finish_reason;