Streaming & Async Support

Icho fully supports recording and replaying streaming responses (both sync and async generators) for OpenAI, Anthropic, and LangChain Groq models.

OpenAI Streaming Example:

from openai import OpenAI
from icho import cassette

client = OpenAI()

with cassette("tests/cassettes"):
    stream = client.chat.completions.create( 
        model="gpt-4o",
        messages=[{"role": "user", "content": "Write a poem"}],
        stream=True
    )
    for chunk in stream:
        print(chunk.choices[0].delta.content or "", end="")