It's a cool robot, but auto-dialers are a known tool in safecracking. Additionally, the safe in question seems to be a SentrySafe SF082CS, which caries NO security rating from UL. The lowest test rating, RSC, only requires the safe survive a 5 minute attack with hand tools.
How do I find a UL-security-rated safe? Does it matter if I don't bolt it to the floor?
As a sibling commented RSCs are the lowest level and appropriate for home use of low level valuables. Expect $500-1000 and up. TL rated products are almoat always geared towards commercial use. When I was looking a local safe company had a korean made TL-15 with 1 hr fire resistance for about $2500. This was a very bare bones commercial demo/returned unit about 2'x3'x5' interior.
All safes and RSCs must be anchored to the structure on 2 or more sides to be effective. RSCs or "gun safes" will simply be pulled/cut out of the structure if not anchored. TL safes will be knocked over and attacked at the door or floor.
Heres UL testing a safe that probably costs $10,000+ today. https://m.youtube.com/watch?v=OtbGUbeM860