From 1b2278951d04aeef568714571fba69de56785f6a Mon Sep 17 00:00:00 2001
From: Sameer Kankute <sameer@berri.ai>
Date: Mon, 9 Feb 2026 16:39:21 +0530
Subject: [PATCH] Add output_config as supported param

---
 .../experimental_pass_through/messages/transformation.py         | 1 +
 litellm/types/llms/anthropic.py                                  | 1 +
 2 files changed, 2 insertions(+)

diff --git a/litellm/llms/anthropic/experimental_pass_through/messages/transformation.py b/litellm/llms/anthropic/experimental_pass_through/messages/transformation.py
index bb40f9df26..a48d162215 100644
--- a/litellm/llms/anthropic/experimental_pass_through/messages/transformation.py
+++ b/litellm/llms/anthropic/experimental_pass_through/messages/transformation.py
@@ -46,6 +46,7 @@ class AnthropicMessagesConfig(BaseAnthropicMessagesConfig):
             "thinking",
             "context_management",
             "output_format",
+            "output_config",
             # TODO: Add Anthropic `metadata` support
             # "metadata",
         ]
diff --git a/litellm/types/llms/anthropic.py b/litellm/types/llms/anthropic.py
index fedf419efd..6c47a54473 100644
--- a/litellm/types/llms/anthropic.py
+++ b/litellm/types/llms/anthropic.py
@@ -360,6 +360,7 @@ class AnthropicMessagesRequestOptionalParams(TypedDict, total=False):
     context_management: Optional[Dict[str, Any]]
     container: Optional[Dict[str, Any]]  # Container config with skills for code execution
     output_format: Optional[AnthropicOutputSchema]  # Structured outputs support
+    output_config: Optional[AnthropicOutputConfig]  # Configuration for Claude's output behavior
 
 
 class AnthropicMessagesRequest(AnthropicMessagesRequestOptionalParams, total=False):