The Wall Street Journal reported today that OpenAI and Softbank have not been able to agree on key issues regarding the partnership, including where to build the new sites. The group is now aiming to open a single, smaller data center, likely in Ohio, by the end of the year, according to sources familiar with the matter.

The Stargate Project, a proposed $500B, four-year initiative to build out artificial intelligence data centers across the U.S. with powerful partners such as SoftBank ( OTCPK:SFTBY ), OpenAI, Microsoft ( MSFT ), Nvidia ( NVDA ), Oracle ( ORCL) and Arm ( ARM ), is struggling to finalize data center deals, according to the Wall Street Journal.

SoftBank and OpenAI’s partnership on a $500 billion project to build AI data centers stalls six months after launch.