OpusCleaner and OpusTrainer, open source toolkits for training Machine Translation and Large language models. - Nikolay Bogoychev; Jelmer van der Linde; Graeme Nail; Barry Haddow; Jaume Zaragoza-Bernabeu; Gema Ramírez-Sánchez; Lukas Weymann; Tudor Nicolae Mateiu; Jindrich Helcl; Mikko Aulamo (CoRR, 2023)