The UN Climate Change Conference, (COP19), ran into extra time on Saturday morning.
Negotiators were trying to lay basic stepping stones towards a 2015 deal to ease global warming that would take effect in 2020.
But they argued about who needs to do what, when and how.
A draft text on Friday merely urged the rich to raise aid. The European Union said it would pledge 6 billion euros in climate aid to developing countries in 2014, a rise from 5.5 billion euros for 2013.
The EU and the US want to get rid of the rich-poor division that has guided the talks in the past.
Connie Hedegaard, European Commissioner for Climate Action said: “You will understand that that is not acceptable to the European Union but I also think to really many others because they know that only if all of us do our utmost in the years after 2020 we will get what we really need.”
Many developing nations say the rich are doing too little to lead.
The Warsaw meeting has little to show after two weeks except a deal on new rules to protect tropical forests, which soak up carbon dioxide as they grow.
Disputes persisted on climate financing. Rich countries have promised to help developing nations make their economies greener and to adapt to rising sea levels, desertification and other climate impacts.
Jan Kowalzig, Climate Change Policy Adviser, Oxfam said: “Climate change is already causing hunger, destroying food production, destroying livelihoods all around the world, which is why it is so important that this conference comes to a successful end.”
Several green groups walked out of the conference on Thursday to protest at the lack of progress.
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