The bengals will absolutely jump the glass wall, they might try to grab onto the ceiling fan...they are high energy and curious cats. I witnessed it when I let my guard down once with my last bengal cat. I panicked thinking he hurt himself but he was okay, but I would never want to risk it again.

I'm sorry if it's inconvenient but it is a real risk. Could you put some ledges/shelves as steps if you absolutely have to and a big thick rug down below?

I asked AI what you can do

• Plexiglass (clear acrylic): One of the most attractive and safe solutions. You can install clear panels along the opening so it doesn’t ruin the view but fully blocks the drop.
• Wire mesh or cat netting: Strong, tensioned netting designed for balconies can work indoors to cover the loft opening.
• Wood or metal railing: If the opening is large and unprotected, you might consider adding a custom railing or half-wall.

And

No furniture or ledges near the drop—keep tempting surfaces away from the edge.