The leaders of Fine Gael, Fianna Fáil and The Green Party say they are still working to conclude a draft programme for government by the end of the month.
Leo Varadkar, Micheál Martin and Eamon Ryan met for two hours on Monday morning.
The three leaders say they "reaffirmed their commitment to successfully concluding the talks and to negotiating in good faith."
They also said the talks will remain confidential - adding that a "running commentary" will not be provided from any of the parties on matters being discussed in the talks.
A joint statement added: "All parties are working to conclude a draft programme for government by the end of the month and for its consideration by each party in accordance with their respective arrangements thereafter."
Monday marks 100 days since the general election with no new government in place.
Meanwhile Fine Gael and Fine Fáil found themselves caught up in a war of words over the weekend - after it emerged Government officials are examining ways to hold an election amid the COVID-19 crisis.
A number of Fianna Fáil representatives reacted angrily to the news, with Offaly TD Barry Cowen tweeting that the move "smacks of bad faith, selfishness and putting party before country."
Fine Gael insisted the Department of Housing was only doing its job by "planning for all eventualities" and warned that the Fianna Fáil criticism "was unwarranted and has damaged the talks process."
