From 82b5459f8c8e0796ef50eadd6ba458126e5742a4 Mon Sep 17 00:00:00 2001
From: uinstinct <61635505+uinstinct@users.noreply.github.com>
Date: Fri, 17 Oct 2025 08:24:24 +0530
Subject: [PATCH 1/4] fix: prevent anthropic 3.5 models from use thinking

---
 core/llm/autodetect.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/core/llm/autodetect.ts b/core/llm/autodetect.ts
index 2ccc325cfba..f3e3cdd1c04 100644
--- a/core/llm/autodetect.ts
+++ b/core/llm/autodetect.ts
@@ -142,7 +142,10 @@ function modelSupportsReasoning(
   if (!model) {
     return false;
   }
-  if ("anthropic" === model.underlyingProviderName) {
+  if (
+    "anthropic" === model.underlyingProviderName &&
+    !model.model.includes("3-5")
+  ) {
     return true;
   }
   if (model.model.includes("deepseek-r")) {

From 6d9d814b3c9b232c5e376fdc45a1bf9607a26548 Mon Sep 17 00:00:00 2001
From: uinstinct <61635505+uinstinct@users.noreply.github.com>
Date: Fri, 17 Oct 2025 14:09:23 +0530
Subject: [PATCH 2/4] turn off for all claude 3 models

---
 core/llm/autodetect.ts | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/core/llm/autodetect.ts b/core/llm/autodetect.ts
index f3e3cdd1c04..7a50bbfb757 100644
--- a/core/llm/autodetect.ts
+++ b/core/llm/autodetect.ts
@@ -142,10 +142,8 @@ function modelSupportsReasoning(
   if (!model) {
     return false;
   }
-  if (
-    "anthropic" === model.underlyingProviderName &&
-    !model.model.includes("3-5")
-  ) {
+  // do not turn reasoning on by default for claude 3 models
+  if (model.model.includes("claude") && !model.model.includes("3")) {
     return true;
   }
   if (model.model.includes("deepseek-r")) {

From 3d35c2078d7cc55ee0d850289a88021f32aabc06 Mon Sep 17 00:00:00 2001
From: uinstinct <61635505+uinstinct@users.noreply.github.com>
Date: Mon, 20 Oct 2025 11:54:06 +0530
Subject: [PATCH 3/4] use -3-

---
 core/llm/autodetect.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/llm/autodetect.ts b/core/llm/autodetect.ts
index 7a50bbfb757..8f5c7e8be1e 100644
--- a/core/llm/autodetect.ts
+++ b/core/llm/autodetect.ts
@@ -143,7 +143,7 @@ function modelSupportsReasoning(
     return false;
   }
   // do not turn reasoning on by default for claude 3 models
-  if (model.model.includes("claude") && !model.model.includes("3")) {
+  if (model.model.includes("claude") && !model.model.includes("-3-")) {
     return true;
   }
   if (model.model.includes("deepseek-r")) {

From 5519cebb5565adf78e2a8cd338315122db921bdc Mon Sep 17 00:00:00 2001
From: Dallin Romney <dallinromney@gmail.com>
Date: Wed, 22 Oct 2025 15:23:08 -0700
Subject: [PATCH 4/4] fix: add 3.5 exclusion for thinking

---
 core/llm/autodetect.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/core/llm/autodetect.ts b/core/llm/autodetect.ts
index 8f5c7e8be1e..ad0bb85e7ad 100644
--- a/core/llm/autodetect.ts
+++ b/core/llm/autodetect.ts
@@ -143,7 +143,11 @@ function modelSupportsReasoning(
     return false;
   }
   // do not turn reasoning on by default for claude 3 models
-  if (model.model.includes("claude") && !model.model.includes("-3-")) {
+  if (
+    model.model.includes("claude") &&
+    !model.model.includes("-3-") &&
+    !model.model.includes("-3.5-")
+  ) {
     return true;
   }
   if (model.model.includes("deepseek-r")) {