Check if NVIDIA Optix is available from Blender

optix_check.py

import bpy

# Function to check if OptiX is available
def is_optix_available():
    prefs = bpy.context.preferences
    cprefs = prefs.addons['cycles'].preferences
    cprefs.get_devices()
    for device in cprefs.devices:
        if 'OPTIX' in device.type:
            return True
    return False

# Running the function and printing the result
print("Is OptiX available:", is_optix_available())

To execute it, simply call the file from Blender.

sudo ./blender/blender -b -P /path-to-file/check_optix.py