responses_stream.py

import openai
from opentelemetry.exporter.otlp.proto.http.trace_exporter import OTLPSpanExporter
from opentelemetry.sdk import trace as trace_sdk
from opentelemetry.sdk.trace.export import ConsoleSpanExporter, SimpleSpanProcessor

from openinference.instrumentation.openai import OpenAIInstrumentor

endpoint = "http://127.0.0.1:6006/v1/traces"
tracer_provider = trace_sdk.TracerProvider()
tracer_provider.add_span_processor(SimpleSpanProcessor(OTLPSpanExporter(endpoint)))
tracer_provider.add_span_processor(SimpleSpanProcessor(ConsoleSpanExporter()))

OpenAIInstrumentor().instrument(tracer_provider=tracer_provider)


client = openai.OpenAI()
for event in client.responses.create(
    model="gpt-4.1-nano",
    input=[
        {"role": "user", "content": "Write a one-sentence bedtime story about a unicorn."},
    ],
    stream=True,
):
    if event.type == "response.output_text.delta":
        print(event.delta, end="")