Speaking to donors who support the Palestinian Authority, Kerry said the two sides have met seven times since the talks resumed on July 29 although Israeli Prime Minister Benjamin Netanyahu and Palestinian President Mahmoud Abbas have not met.
"We have agreed now, in the last week, when I have met with both President Abbas and Prime Minister Netanyahu, we have agreed now to intensify these talks," he said. "And we have agreed that the American participation should be increased somewhat in order to try to help facilitate."
Kerry described two tracks to the talks: one among the negotiators - Israel's Tzipi Livni and Yitzhak Molcho and the Palestinians Saeb Erekat and Mohammed Shtayyeh - and another among Abbas, Netanyahu, Kerry and U.S. President Barack Obama.
Speaking of the second track, Kerry said: "As we think appropriate, as we need to move the process, we will be consulting among each other and working to move this process forward."
Kerry's comments offered a rare glimpse at the talks, which the United States initiated but has tried to keep under wraps on the argument that public discussion makes it harder to reach an agreement to end the more than six-decade conflict.
Abbas told Obama in a meeting on Tuesday on the fringes of the UN General Assembly that the Palestinians will exert every effort possible to try to ensure the peace talks are a success.
Obama is due to meet Netanyahu next week in Washington as he tries to keep up the momentum in the negotiations.
The key issues to be resolved include borders, the future of Jewish settlements in the West Bank, the status of Jerusalem and the fate of Palestinian refugees.
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