fix: #2155 DeepSeek reasoning_content missing in tool call messages #2328
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@codex review again |
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Codex Review: Didn't find any major issues. Chef's kiss. ℹ️ About Codex in GitHubYour team has set up Codex to review pull requests in this repo. Reviews are triggered when you
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- Add pending_reasoning_content tracking for DeepSeek models - Extract reasoning content from summary field in reasoning items - Apply reasoning_content to assistant messages with tool_calls - Works for both LiteLLM and OpenAI ChatCompletions paths Fixes openai#2155
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can you fix the lint issue? |
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can you fix the mypy error? |
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This PR fixes issue #2155 (400 error on tool calls due to missing
reasoning_contentin reconstructed assistant messages.)Root Cause: When DeepSeek returns a response with
reasoning_contentandtool_calls, the SDK converts it to:ResponseReasoningItem(stores reasoning insummaryfield)ResponseFunctionToolCall(stores tool call)On the next API call,
Converter.items_to_messages()reconstructs the assistant message with tool calls, but was only handling reasoning content for Anthropic/Claude models (via thinking blocks), not DeepSeek.Solution: The fix follows the same pattern as Anthropic's thinking blocks but uses DeepSeek's
reasoning_contentfield instead. It:summaryfield when processing reasoning items for DeepSeek modelspending_reasoning_contentChecks
make lintandmake format(linter shows only import resolution warnings, not code issues)Note: The fix works for both code paths:
LitellmModelwithmodel="deepseek/deepseek-reasoner"OpenAIChatCompletionsModelwithmodel="deepseek-reasoner"and DeepSeek's OpenAI-compatible endpoint