diff --git a/litellm/llms/anthropic/experimental_pass_through/messages/transformation.py b/litellm/llms/anthropic/experimental_pass_through/messages/transformation.py
index 308bf367d0..52e3ca7159 100644
--- a/litellm/llms/anthropic/experimental_pass_through/messages/transformation.py
+++ b/litellm/llms/anthropic/experimental_pass_through/messages/transformation.py
@@ -189,8 +189,27 @@ class AnthropicMessagesConfig(BaseAnthropicMessagesConfig):
             beta_values.update(b.strip() for b in existing_beta.split(","))
 
         # Check for context management
-        if optional_params.get("context_management") is not None:
-            beta_values.add(ANTHROPIC_BETA_HEADER_VALUES.CONTEXT_MANAGEMENT_2025_06_27.value)
+        context_management_param = optional_params.get("context_management")
+        if context_management_param is not None:
+            # Check edits array for compact_20260112 type
+            edits = context_management_param.get("edits", [])
+            has_compact = False
+            has_other = False
+            
+            for edit in edits:
+                edit_type = edit.get("type", "")
+                if edit_type == "compact_20260112":
+                    has_compact = True
+                else:
+                    has_other = True
+            
+            # Add compact header if any compact edits exist
+            if has_compact:
+                beta_values.add(ANTHROPIC_BETA_HEADER_VALUES.COMPACT_2026_01_12.value)
+            
+            # Add context management header if any other edits exist
+            if has_other:
+                beta_values.add(ANTHROPIC_BETA_HEADER_VALUES.CONTEXT_MANAGEMENT_2025_06_27.value)
 
         # Check for structured outputs
         if optional_params.get("output_format") is not None: