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fix: preserve reasoning_content in anthropic to openai tool-call pass-through

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Gennaro Malafronte 2026-04-22 23:24:10 +02:00
parent d120ddf678
commit 2dae356850
1 changed files with 8 additions and 1 deletions
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9
litellm/llms/anthropic/experimental_pass_through/adapters/transformation.py
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@ -559,6 +559,7 @@ class LiteLLMAnthropicMessagesAdapter:
) # For content blocks with cache_control
has_cache_control_in_text = False
tool_calls: List[ChatCompletionAssistantToolCall] = []
reasoning_content_parts: List[str] = []
thinking_blocks: List[
Union[ChatCompletionThinkingBlock, ChatCompletionRedactedThinkingBlock]
] = []
@ -616,12 +617,15 @@ class LiteLLMAnthropicMessagesAdapter:
)
tool_calls.append(tool_call)
elif content.get("type") == "thinking":
thinking_text = content.get("thinking") or ""
thinking_block = ChatCompletionThinkingBlock(
type="thinking",
thinking=content.get("thinking") or "",
thinking=thinking_text,
signature=content.get("signature") or "",
cache_control=content.get("cache_control", {}),
)
if thinking_text:
reasoning_content_parts.append(thinking_text)
thinking_blocks.append(thinking_block)
elif content.get("type") == "redacted_thinking":
redacted_thinking_block = (
@ -659,6 +663,9 @@ class LiteLLMAnthropicMessagesAdapter:
)
if len(tool_calls) > 0:
assistant_message["tool_calls"] = tool_calls # type: ignore
assistant_message["reasoning_content"] = (
"".join(reasoning_content_parts) if len(reasoning_content_parts) > 0 else " "
) # type: ignore
if len(thinking_blocks) > 0:
assistant_message["thinking_blocks"] = thinking_blocks # type: ignore
new_messages.append(assistant_message)