The remarks were the among the clearest yet signaling that Iran, faced with a bevy of economic and military setbacks, sought to ease isolation due to intensify under a second presidency of Donald Trump through talks.
Negotiations should be aimed "at reaching an agreement," Araghchi said in an interview with China's state-run CCTV network.
“The formula we have is the same as the previous JCPOA formula, which is building trust about Iran's nuclear program in exchange for the removal of sanctions. We are ready to negotiate on this basis," he added.
The Joint Comprehensive Plan of Action (JCPOA) is the agreement signed in July 2015 between Iran, the European Union and the five permanent members of the UN Security Council plus Germany---commonly known as the P5+1.
Britain, France, and Germany are set to begin a new round of talks with Iran over its nuclear program in Geneva on January 13.
The deal reached under US President Barack Obama was criticized by his successor Trump, who pulled out of the agreement, as too lenient on Tehran.