During their meeting, Musk and Netanyahu visited the Kfar Azza kibbutz near the border.
In addition to meeting Netanyahu, Musk was scheduled to meet Israeli President Isaac Herzog and Benny Gantz, a former defense minister now part of a special war Cabinet.
It remains unclear whether Musk was invited or attended independently, X, which is formally known as twitter did not provide a comment.
Israel's communications minister, Shlomo Karhi, announced a deal between his ministry and Musk's Starlink satellite internet company.
The agreement stipulates that Starlink satellite units can only operate in Israel, including the Gaza Strip, with the approval of the Israeli Ministry of Communications.
Musk has faced allegations of permitting anti-Semitic content on X, especially since his acquisition of the platform last year.
