  In this paper we provide the largest published comparison of translation
quality for phrase-based SMT and neural machine translation across 30
translation directions. For ten directions we also include hierarchical
phrase-based MT. Experiments are performed for the recently published United
Nations Parallel Corpus v1.0 and its large six-way sentence-aligned subcorpus.
In the second part of the paper we investigate aspects of translation speed,
introducing AmuNMT, our efficient neural machine translation decoder. We
demonstrate that current neural machine translation could already be used for
in-production systems when comparing words-per-second ratios.
