Move is_anthropic_model_name helper to utils.model_family

constants.py is for enums and mappings, not utility functions.
Relocate the helper + keyword tuple to a dedicated utils module and
update all call sites to import from the new path.

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

Author: cosminacho

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to `uipath_llm_client` (core package) will be documented in
 ## [1.9.1] - 2026-04-17
 
 ### Added
-- `is_anthropic_model_name()` helper and `ANTHROPIC_MODEL_NAME_KEYWORDS` tuple in `settings.constants` — name-based Claude detection for BYOM deployments where discovery does not expose `modelFamily`
+- `utils.model_family.is_anthropic_model_name()` helper and `ANTHROPIC_MODEL_NAME_KEYWORDS` tuple — name-based Claude detection for BYOM deployments where discovery does not expose `modelFamily`
 
 ### Fixed
 - `UiPathLiteLLM` now detects Claude-family models by name when `modelFamily` is unavailable (BYOM), correctly routing Bedrock/Vertex provider selection and default flavors

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

@@ -64,13 +64,9 @@
 from langchain_core.utils.pydantic import is_basemodel_subclass
 from pydantic import AliasChoices, BaseModel, Field
 
+from uipath.llm_client.utils.model_family import is_anthropic_model_name
 from uipath_langchain_client.base_client import UiPathBaseChatModel
-from uipath_langchain_client.settings import (
-    ApiType,
-    RoutingMode,
-    UiPathAPIConfig,
-    is_anthropic_model_name,
-)
+from uipath_langchain_client.settings import ApiType, RoutingMode, UiPathAPIConfig
 
 _DictOrPydanticClass = Union[dict[str, Any], type[BaseModel], type]
 _DictOrPydantic = Union[dict[str, Any], BaseModel]

packages/uipath_langchain_client/src/uipath_langchain_client/factory.py

@@ -22,6 +22,7 @@
 
 from typing import Any
 
+from uipath.llm_client.utils.model_family import is_anthropic_model_name
 from uipath_langchain_client.base_client import (
     UiPathBaseChatModel,
     UiPathBaseEmbeddings,
@@ -35,7 +36,6 @@
     UiPathBaseSettings,
     VendorType,
     get_default_client_settings,
-    is_anthropic_model_name,
 )
 
 

packages/uipath_langchain_client/src/uipath_langchain_client/settings.py

@@ -31,7 +31,6 @@
     ModelFamily,
     RoutingMode,
     VendorType,
-    is_anthropic_model_name,
 )
 
 __all__ = [
@@ -48,5 +47,4 @@
     "VendorType",
     "API_FLAVOR_TO_VENDOR_TYPE",
     "BYOM_TO_ROUTING_FLAVOR",
-    "is_anthropic_model_name",
 ]

src/uipath/llm_client/clients/litellm/client.py

@@ -34,8 +34,8 @@
     ModelFamily,
     RoutingMode,
     VendorType,
-    is_anthropic_model_name,
 )
+from uipath.llm_client.utils.model_family import is_anthropic_model_name
 from uipath.llm_client.utils.retry import RetryConfig
 
 # Route OpenAI chat completions through base_llm_http_handler (accepts HTTPHandler)

src/uipath/llm_client/settings/constants.py

@@ -70,19 +70,3 @@ class ByomApiFlavor(StrEnum):
     ByomApiFlavor.AWS_BEDROCK_INVOKE: ApiFlavor.INVOKE,
     ByomApiFlavor.AWS_BEDROCK_CONVERSE: ApiFlavor.CONVERSE,
 }
-
-
-ANTHROPIC_MODEL_NAME_KEYWORDS: tuple[str, ...] = (
-    "anthropic",
-    "claude",
-    "opus",
-    "sonnet",
-    "haiku",
-    "mythos",
-)
-
-
-def is_anthropic_model_name(model_name: str) -> bool:
-    """Heuristic fallback for when discovery's ``modelFamily`` is unavailable (e.g. BYOM)."""
-    lower = model_name.lower()
-    return any(kw in lower for kw in ANTHROPIC_MODEL_NAME_KEYWORDS)

src/uipath/llm_client/utils/model_family.py

@@ -0,0 +1,20 @@
+"""Heuristic helpers for identifying a model's family from its name.
+
+Discovery metadata (``modelFamily``) is the authoritative source, but BYOM
+deployments do not expose it. These helpers provide a name-based fallback.
+"""
+
+ANTHROPIC_MODEL_NAME_KEYWORDS: tuple[str, ...] = (
+    "anthropic",
+    "claude",
+    "opus",
+    "sonnet",
+    "haiku",
+    "mythos",
+)
+
+
+def is_anthropic_model_name(model_name: str) -> bool:
+    """Return True if ``model_name`` looks like an Anthropic Claude-family model."""
+    lower = model_name.lower()
+    return any(kw in lower for kw in ANTHROPIC_MODEL_NAME_KEYWORDS)