Ragas

pip install "ragas==0.4.3" "langchain-community<0.4" openai

export TOKENLAB_API_KEY="sk-your-tokenlab-key"

import os

from openai import AsyncOpenAI
from ragas.llms import llm_factory
from ragas.metrics import DiscreteMetric

client = AsyncOpenAI(
    api_key=os.environ["TOKENLAB_API_KEY"],
    base_url="https://api.tokenlab.sh/v1",
)
llm = llm_factory("claude-sonnet-5", client=client)

metric = DiscreteMetric(
    name="summary_accuracy",
    allowed_values=["accurate", "inaccurate"],
    prompt="Evaluate whether the response is accurate. Answer only accurate or inaccurate.\n\nResponse: {response}",
)