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fix(utils): keep litellm params out of provider request bodies

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get_litellm_params() keys such as model_alias_map, completion_call_id and
custom_prompt_dict were missing from all_litellm_params, so when a bridge
forwarded litellm_params as completion kwargs they were swept into extra_body
and OpenAI rejected the call with "Unknown parameter: 'model_alias_map'".

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
This commit is contained in:
Devin AI 2026-09-13 21:13:45 +00:00 • committed by yassin
parent 7fd541efb9
commit 6f9915b650
2 changed files with 31 additions and 0 deletions
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10
litellm/types/utils.py
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@ -3761,6 +3761,16 @@ all_litellm_params = (
"model_file_id_mapping",
"litellm_logging_obj",
"litellm_call_id",
"completion_call_id",
"model_alias_map",
"custom_prompt_dict",
"stream_response",
"cost_per_query",
"ssl_verify",
"data_residency",
"async_call",
"aembedding",
"allm_passthrough_route",
"_litellm_strip_stream_usage",
"use_client",
"id",

21
tests/test_litellm/test_utils.py
View file

@ -29,6 +29,7 @@ from litellm._logging import (
verbose_logger,
)
from litellm.integrations.custom_logger import CustomLogger
from litellm.litellm_core_utils.get_litellm_params import get_litellm_params
from litellm.litellm_core_utils.thread_pool_executor import executor as logging_executor
from litellm.proxy.utils import is_valid_api_key
from litellm.types.utils import (
@ -5389,6 +5390,26 @@ def test_websearch_interception_control_fields_never_reach_the_provider():
assert set(WEBSEARCH_INTERNAL_CONTROL_FIELDS) <= set(all_litellm_params)
def test_get_litellm_params_keys_never_reach_the_provider():
"""Bridges (chat <-> Responses, agentic loop follow-ups) forward litellm_params as
`completion()` kwargs. Any key the param builder does not recognize is swept into
extra_body, and OpenAI rejects the call with `Unknown parameter: 'model_alias_map'`.
"""
litellm_param_keys = frozenset(get_litellm_params()) - {"drop_params"}
kwargs = {
"a_real_provider_specific_param": 1,
"model_alias_map": {"alias": "gpt-5.4"},
**{key: "configured-value" for key in litellm_param_keys - {"model_alias_map"}},
}
non_default = get_non_default_completion_params(kwargs)
assert non_default == {"a_real_provider_specific_param": 1}, (
"litellm params leaked into the provider params: "
f"{sorted(set(non_default) - {'a_real_provider_specific_param'})}"
)
def test_bedrock_batch_params_never_reach_the_provider():
"""A Bedrock managed-batch deployment carries aws_batch_role_arn / s3_* /
bedrock_tags in its litellm_params, and the same deployment also serves chat.