[Bug]: /v1/messages adapter drops reasoning_content → thinking blocks for OpenAI-compatible chat-completions backends (streaming)
![[Bug]: /v1/messages adapter drops reasoning_content → thinking blocks for OpenAI-compatible chat-completions backends (streaming)](https://www.chat-gpts.plus/wp-content/uploads/2026/07/29518-e12a48c7-768x403.jpg)
当 LiteLLM 通过 /v1/messages 代理 OpenAI 兼容后端(如 vLLM、SGLang)并使用流式传输时,模型返回的 reasoning_content (推理链)在转译为 Anthropic 格式的 thinking 块时被静默丢弃。优先排查原始 SSE 流中是否包含 rea








