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.
Israel carries out rare airborne raid in Lebanon; 16 killed in strikes
US skips congressional review to approve arms sale to Israel
Flash floods in Nairobi kill 23, disrupt flights at major airport
Russia hits Ukraine with drones, missiles, kills at least 10 in Kharkiv
Partial resumption of air navigation in Qatar
Kuwait and Qatar thwart fresh wave of Iranian attacks
After a week of war, Trump demands Iran's 'unconditional surrender'
Ex-rapper's party set to sweep Nepal election
