diff --git a/tests/unit/llms/anthropic/messages/adapters/test_anthropic_messages_adapters_transformation.py b/tests/unit/llms/anthropic/messages/adapters/test_anthropic_messages_adapters_transformation.py
index 29fa57225ea..86a4c29fcf0 100644
--- a/tests/unit/llms/anthropic/messages/adapters/test_anthropic_messages_adapters_transformation.py
+++ b/tests/unit/llms/anthropic/messages/adapters/test_anthropic_messages_adapters_transformation.py
@@ -5537,11 +5537,18 @@ async def test_chat_bridge_tool_result_text_block_without_text_reaches_the_model
         ({"type": "auto", "disable_parallel_tool_use": True}, "openai/gpt-oss-120b", "groq", False),
         ({"type": "auto", "disable_parallel_tool_use": False}, "gpt-5.4", "openai", None),
         ({"type": "auto"}, "gpt-5.4", "openai", None),
-        # cohere_chat declares no parallel_tool_calls: the flag stays behind instead of raising UnsupportedParamsError
         ({"type": "auto", "disable_parallel_tool_use": True}, "command-a-03-2025", "cohere_chat", None),
-        # no resolved provider (logging and guardrail callers): the flag stays behind as before
         ({"type": "auto", "disable_parallel_tool_use": True}, "gpt-5.4", None, None),
     ],
+    ids=[
+        "openai-auto-disabled",
+        "openai-any-disabled",
+        "groq-auto-disabled",
+        "openai-auto-enabled",
+        "openai-auto-omitted",
+        "cohere-declares-no-parallel-tool-calls-stays-behind",
+        "no-provider-stays-behind",
+    ],
 )
 def test_translate_anthropic_to_openai_disable_parallel_tool_use_sets_parallel_tool_calls(
     tool_choice: dict[str, object],
diff --git a/tests/unit/llms/anthropic/messages/responses_adapters/test_responses_adapters_handler.py b/tests/unit/llms/anthropic/messages/responses_adapters/test_responses_adapters_handler.py
index 687cde6d7f6..8101facb6a6 100644
--- a/tests/unit/llms/anthropic/messages/responses_adapters/test_responses_adapters_handler.py
+++ b/tests/unit/llms/anthropic/messages/responses_adapters/test_responses_adapters_handler.py
@@ -57,9 +57,9 @@ def test_build_responses_kwargs_never_asks_the_nested_call_to_replay_a_stream():
     [
         ("openai/gpt-5.6-luna", "openai", False),
         ("azure/gpt-5.6-luna", "azure", False),
-        # Perplexity's Responses API declares no parallel_tool_calls: the flag stays behind instead of a 400
         ("perplexity/sonar", "perplexity", None),
     ],
+    ids=["openai-declares", "azure-declares", "perplexity-declares-no-parallel-tool-calls-stays-behind"],
 )
 def test_build_responses_kwargs_maps_disable_parallel_tool_use_only_where_the_provider_declares_it(
     model: str, custom_llm_provider: str, expected_parallel_tool_calls: bool | None