From 4e39c164bb55ba5f877beb555a1797fc55c31baa Mon Sep 17 00:00:00 2001
From: Mason Daugherty <mason@langchain.dev>
Date: Fri, 5 Sep 2025 14:28:58 -0400
Subject: [PATCH] fix(anthropic): remove beta header warning for TTL (#32832)

No longer beta as of Aug 13
---
 .../langchain_anthropic/chat_models.py        | 38 ++++++-------------
 1 file changed, 12 insertions(+), 26 deletions(-)

diff --git a/libs/partners/anthropic/langchain_anthropic/chat_models.py b/libs/partners/anthropic/langchain_anthropic/chat_models.py
index 66f07c7ffd3..b1052a1f100 100644
--- a/libs/partners/anthropic/langchain_anthropic/chat_models.py
+++ b/libs/partners/anthropic/langchain_anthropic/chat_models.py
@@ -999,24 +999,27 @@ class ChatAnthropic(BaseChatModel):
 
         .. dropdown:: Extended caching
 
-            .. versionadded:: 0.3.15
-
             The cache lifetime is 5 minutes by default. If this is too short, you can
-            apply one hour caching by enabling the ``'extended-cache-ttl-2025-04-11'``
-            beta header:
+            apply one hour caching by setting ``ttl`` to ``'1h'``.
 
             .. code-block:: python
 
                 llm = ChatAnthropic(
                     model="claude-3-7-sonnet-20250219",
-                    betas=["extended-cache-ttl-2025-04-11"],
                 )
 
-            and specifying ``"cache_control": {"type": "ephemeral", "ttl": "1h"}``.
+                messages = [{
+                        "role": "user",
+                        "content": [
+                            {
+                                "type": "text",
+                                "text": f"{long_text}",
+                                "cache_control": {"type": "ephemeral", "ttl": "1h"},
+                            },
+                        ],
+                }]
 
-            .. important::
-                Specifying a `ttl` key under `cache_control` will not work unless the
-                beta header is set!
+                response = llm.invoke(messages)
 
             Details of cached token counts will be included on the ``InputTokenDetails``
             of response's ``usage_metadata``:
@@ -1432,23 +1435,6 @@ class ChatAnthropic(BaseChatModel):
         # If cache_control is provided in kwargs, add it to last message
         # and content block.
         if "cache_control" in kwargs and formatted_messages:
-            cache_control = kwargs["cache_control"]
-
-            # Validate TTL usage requires extended cache TTL beta header
-            if (
-                isinstance(cache_control, dict)
-                and "ttl" in cache_control
-                and (
-                    not self.betas or "extended-cache-ttl-2025-04-11" not in self.betas
-                )
-            ):
-                msg = (
-                    "Specifying a 'ttl' under 'cache_control' requires enabling "
-                    "the 'extended-cache-ttl-2025-04-11' beta header. "
-                    "Set betas=['extended-cache-ttl-2025-04-11'] when initializing "
-                    "ChatAnthropic."
-                )
-                warnings.warn(msg, stacklevel=2)
             if isinstance(formatted_messages[-1]["content"], list):
                 formatted_messages[-1]["content"][-1]["cache_control"] = kwargs.pop(
                     "cache_control"