Fix: detect Anthropic-family models by additional name keywords

Expand the model-name heuristic to treat `anthropic`, `opus`, `sonnet`,
`haiku`, and `mythos` as Claude-family indicators alongside `claude`.
Applies to the Bedrock INVOKE factory routing and the normalized
client's empty tool-call content workaround.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: cosminacho

packages/uipath_langchain_client/CHANGELOG.md

@@ -2,6 +2,11 @@
 
 All notable changes to `uipath_langchain_client` will be documented in this file.
 
+## [1.9.1] - 2026-04-17
+
+### Fixed
+- Detect Anthropic-family models by additional name keywords (`anthropic`, `opus`, `sonnet`, `haiku`, `mythos`) alongside `claude` — applies to Bedrock INVOKE factory routing and the normalized client's empty tool-call content workaround
+
 ## [1.9.0] - 2026-04-17
 
 ### Changed

packages/uipath_langchain_client/src/uipath_langchain_client/__version__.py

@@ -1,3 +1,3 @@
 __title__ = "UiPath LangChain Client"
 __description__ = "A Python client for interacting with UiPath's LLM services via LangChain."
-__version__ = "1.9.0"
+__version__ = "1.9.1"

packages/uipath_langchain_client/src/uipath_langchain_client/clients/normalized/chat_models.py

@@ -412,7 +412,10 @@ def _preprocess_request(
                         converted_message["content"] = ""
                 if (
                     self.model_name
-                    and "claude" in self.model_name.lower()
+                    and any(
+                        kw in self.model_name.lower()
+                        for kw in ("anthropic", "claude", "opus", "sonnet", "haiku", "mythos")
+                    )
                     and not converted_message["content"]
                 ):
                     converted_message["content"] = "tool_call"

packages/uipath_langchain_client/src/uipath_langchain_client/factory.py

@@ -172,7 +172,15 @@ def get_chat_model(
                 **model_kwargs,
             )
         case VendorType.AWSBEDROCK:
-            if model_family == ModelFamily.ANTHROPIC_CLAUDE and api_flavor is None:
+            if (
+                model_family == ModelFamily.ANTHROPIC_CLAUDE and api_flavor != ApiFlavor.CONVERSE
+            ) or (
+                api_flavor == ApiFlavor.INVOKE
+                and any(
+                    kw in model_name.lower()
+                    for kw in ("anthropic", "claude", "opus", "sonnet", "haiku", "mythos")
+                )
+            ):
                 from uipath_langchain_client.clients.bedrock.chat_models import (
                     UiPathChatAnthropicBedrock,
                 )