"Today they (the West) have agreed that the existing 5,000 to 6,000 centrifuges do not increase and that there is no problem if this number of centrifuges work," Ahmadinejad was quoted as saying by the official media outlets to a gathering of his supporters in the holy city of Mashhad.
Ahmadinejad said the US presence in at the Geneva talks was a "success" for Iran regardless of its outcome, state radio reported.
"They said a few years ago that talks without a US participation has no results and the US condition is suspending enrichment but it has happened today without satisfying the US condition."
He had vowed on Wednesday that Iran would make no concessions and that further sanctions would not force it to back down.
The New York Times on Tuesday released what it said was a two-page informal document that outlined Tehran's approach to talks in Geneva and was distributed by Iranian negotiators.
The paper called for seven more rounds of talks, stressed the need for an end to sanctions, and made no mention of an incentives package.
The clerical regime's officials have repeatedly said they have no intention of freezing enrichment.
Vice President Gholam-Reza Aghazadeh said on Thursday that the negotiations with the world powers could be used to resolve wider Middle East problems from the conflict in Iraq to surging oil prices.
The mullahs are in the business of cat and mouse game with the rest of the world hoping the days left to obtain their first nuclear bomb is soon numbered.