// Create streaming chat completion
      const response = await client.chat({
        model: modelName,
        messages: messages,
        stream: true,
        think: deepThinkingEnabled ? undefined : false, // XXX: `true` is enabling deep thinking mode in Ollama, is it a bug?
        options: {
          temperature: modelParams.temperature,
          top_p: modelParams.topP,
        },
      });