Thinking models in ollama exit early

[sam-baumann]

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Desribe the bug

Even when passing in 'stop': None to bertopic.OpenAI, "stop": "\n" gets passed into the openai model call, which causes thinking models to exit early in Ollama (in particular, gemma4:e2b)

Reproduction

from bertopic import BERTopic
import openai
from bertopic.representation import OpenAI

client = openai.OpenAI(
    base_url="http://localhost:11435/v1",
    api_key="ollama"
)

representation_model = OpenAI(client, model="gemma4:e2b", generator_kwargs={"stop": None})

BERTopic Version

0.17.4