In WMT15 and WMT16, the neural QUETCH system (Kreutzer et al., 2015) and its ensemble with other neural models (Martins et al., 2016) were components of the winning systems.
none of these neural models managed to outperform a linear model when  of 35.27% in the WMT15 test set, far below the 40.84% score of the linear system built by the same team.