Their most recent scientific paper they published 3 months ago only says that scientific breakeven (Qsci > 1) is possible. Which has been claimed many times before pesky engineering challenges and unmodeled behavior starts to interfere. The paper actually mostly just rehashes their marketing so its impossible to judge how realistic their claims are. Regardless, they don't seem like they are close to any kind of actual prototype let alone one that can demonstrate scientific breakeven or the order of magnitude harder engineering breakeven.

Their claims seem very hard to believe to put it mildy.