The two countries signed a raft of investment deals worth $20 billion (over AED 73 billion) on Sunday in a bid to boost Pakistan's fragile economy.
It comes as part of Saudi Crown Prince Mohammed bin Salman's high-profile three-country Asian tour.
Prime Minister Imran Khan thanked their long-time ally for its support. "Pakistan and Saudi Arabia are now taking this relationship to a level which (they) never had before."
The Crown Prince also expressed confidence in Pakistan's economy.
Khan also drove the Saudi Crown Prince to the PM house, just as he had done while welcoming His Highness Sheikh Mohamed bin Zayed Al Nahyan, Crown Prince of Abu Dhabi and Deputy Supreme Commander of the UAE Armed Forces, this year.
Nine days after disaster, two pulled alive from Nepal hydropower tunnel
Philippine court issues warrant for VP Duterte's arrest in grave threats case
Air India A320 issued stall warning when seatbelt signs off, injuring 24, investigators say
Typhoon Saudel brings torrential rain, flooding to China's coastal areas
US investigates deadly strike on Iranian wedding
India food safety crackdown targets company of Nepal's 'Noodle King'
Nepal flood losses estimated at $2.56 billion, official says
Kuwait air defences deal with Iranian missile, drone attacks
