The companies, which have received term sheets for the deal and signed non-disclosure agreements in recent days, either declined to comment or did not respond to requests for comment in time for publication.
Goldman Sachs spokespeople declined to comment on its Perzo investment, its plans to develop a chat program or its use of Bloomberg terminals. Bloomberg declined to comment for this story.
Perzo is a Palo Alto, California-based startup founded by David Gurle, who declined a request for comment. Perzo's application differs from Bloomberg's in that it is "open-source," meaning customers can plug it into their systems and alter it as they see fit, whereas Bloomberg customers have to buy the entire terminal, and can't just buy the messaging system and adapt it.
Banks have been looking for messaging alternatives to Bloomberg's closed system for years and have had limited success because the Bloomberg system is used by so many on Wall Street. One source compared Bloomberg to Blackberry, whose product dominated the smart phone market until Apple came out with its iPhone.
Thomson Reuters , which competes with Bloomberg in news, data and analytics, has a chat system with more than 200,000 users in its directory, compared with Bloomberg's 320,000.
Thomson Reuters has also collaborated with price data provider Markit and banks including Goldman Sachs to create an open messaging network.
Goldman Sachs spokespeople declined to comment on its use of Thomson Reuters terminals. Reuters spokespeople declined to comment.
It's unclear what effect a successful new messaging system might have on Goldman's orders for Bloomberg terminals, or whether Goldman would use Bloomberg's messaging system alongside the new application.