feat: ark_model removes the dependency on litellm and supports multimodal input

Author: zakahan

veadk/agent.py

@@ -54,7 +54,6 @@
 from veadk.tracing.base_tracer import BaseTracer
 from veadk.utils.logger import get_logger
 from veadk.utils.patches import patch_asyncio, patch_tracer
-from veadk.utils.misc import check_litellm_version
 from veadk.version import VERSION
 
 patch_tracer()
@@ -171,9 +170,6 @@ def model_post_init(self, __context: Any) -> None:
 
         if not self.model:
             if self.enable_responses:
-                min_version = "1.79.3"
-                check_litellm_version(min_version)
-
                 from veadk.models.ark_llm import ArkLlm
 
                 self.model = ArkLlm(

veadk/memory/short_term_memory.py

@@ -32,7 +32,7 @@
 from veadk.memory.short_term_memory_backends.sqlite_backend import (
     SQLiteSTMBackend,
 )
-from veadk.models.ark_transform import build_cache_metadata
+from veadk.models.ark_llm import build_cache_metadata
 from veadk.utils.logger import get_logger
 
 logger = get_logger(__name__)

veadk/models/__init__.py

@@ -0,0 +1,13 @@
+# Copyright (c) 2025 Beijing Volcano Engine Technology Co., Ltd. and/or its affiliates.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.