AI 大模型 API 流式输出（SSE）完整实现：Python / JS 双端示例

Python (OpenAI SDK)

stream = client.chat.completions.create(model=..., stream=True, ...)
for chunk in stream:
  if chunk.choices[0].delta.content:
    print(chunk.choices[0].delta.content, end="")

浏览器 (EventSource)

const evt = new EventSource("/api/v1/chat?stream=1");
evt.onmessage = e => render(JSON.parse(e.data));