"The behaviour of some, not all, of our partners and especially some of the technocrats and technocrat teams only confirms the arguments of the Greek side," Tsipras said.
"What else can one say to those who have the audacity to say that dealing with a humanitarian crisis is a unilateral action?"
European Commission President Jean-Claude Juncker said he was concerned about the pace of progress on resolving Greece's debt crisis and urged those involved to "get a grip".
"I'm still worried. I'm not satisfied," he told a news conference. "I'd like everyone to get a grip on themselves."
"Time running out"
The latest comments come as Greece risks running out of cash in weeks amid a widening rift with its creditors. Technical teams from Greece and its international lenders started talks last week to try to agree details of reforms, but have made little progress so far.
"We have the impression, and everyone who is dealing with the question shares the impression, that time is running out for Greece," German Finance Minister Wolfgang Schaeuble, said in Berlin, noting that Athens was refusing a third bailout package.
Shut out of debt markets and with financial aid frozen by irate lenders, Athens needs to quickly find new funding. Tsipras will raise the problem in talks with EU leaders at this week's summit, his government said.
But EU officials said they did not understand what Greece hoped to achieve by bringing the issue to the summit, where it is not on the formal agenda and could only be discussed on the sidelines and only in broad political terms.
In a small boost for the government, Greece sold 1.3 billion euros ($1.38 billion) of three-month Treasury bills on Wednesday in its third successful auction this month. The sum covered the amount it sought to raise to refinance a maturing issue.
France appealed for restraint to avoid accidentally triggering a Greek euro zone exit.
"France will be do everything it can to avoid an accident and I believe that what we will do will avoid it," Finance Minister Michel Sapin said. "But no one can be categorical on this and this is why, on both sides, people must control their language."