After the talks deal Wednesday, Iran said it was hopeful for a "new phase in our relations" with the international community.
The White House said Iran had shown a greater level of "seriousness and substance" than ever before at the two days of talks in Geneva.
Germany was also positive, saying the latest talks had boosted hopes for a diplomatic solution but a wary Russia warned there was "no reason to break into applause".
German Foreign Minister Guido Westerwelle said the talks had "reinforced hope that a diplomatic solution is possible to completely calm our concerns about the nature of the Iranian nuclear program".
European Union foreign policy chief Catherine Ashton told reporters the next meeting would convene in Geneva on November 7 and 8.
She read from what she underlined was an unprecedented joint statement agreed with Iranian Foreign Minister Mohammad Javad Zarif and herself as chair of the international negotiating team.
"We hope that this a beginning of a new phase in our relations," Zarif told reporters.
While the details remain under wraps, Iran's lead nuclear negotiator Abbas Araqchi said its proposal involved "proportionate and reciprocal steps by both sides".
Iran's plan contains three steps that could settle the nuclear dispute "within a year", Araqchi has said, the first achievable "within a month or two, or even less".
White House spokesman Jay Carney said Iran's presentation at the talks was "useful", showing a "level of seriousness and substance that we have not seen before".
State Department spokeswoman Jen Psaki also said that "a great deal more work that needs to be done".
NJF/NJF