From 38ffa6736f1c04d39e33c96bb4df7d13a721d5f5 Mon Sep 17 00:00:00 2001
From: milan <milan@berri.ai>
Date: Sun, 23 Aug 2026 20:47:56 +0000
Subject: [PATCH] fix(types): qualify supports_anthropic_thinking_payload with
 ReadOnly

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---
 litellm/types/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/litellm/types/utils.py b/litellm/types/utils.py
index 1abafb15ebd..e07edde68c5 100644
--- a/litellm/types/utils.py
+++ b/litellm/types/utils.py
@@ -165,7 +165,7 @@ class ProviderSpecificModelInfo(TypedDict, total=False):
     supports_max_reasoning_effort: bool | None
     supports_output_config: bool | None
     supports_image_size: bool | None
-    supports_anthropic_thinking_payload: bool | None
+    supports_anthropic_thinking_payload: ReadOnly[bool | None]
     bedrock_output_config_effort_ceiling: Literal["low", "medium", "high", "max", "xhigh"] | None
     bedrock_converse_supports_strict_tools: bool | None