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Machine Translation on FLORES-200 (devtest) (Delta Evaluation)

4.88Delta chrF++GRPO for Seq2Seq MT
-0.07041.21482.53.7852May 15, 2026

Evaluation results

MethodLinks
GRPO for Seq2Seq MTModel Size=1.3B, Language=zho_Hant, Language Group=Isol.2026.054.880.0840.106
GRPO for Seq2Seq MTModel Size=600M, Language=zho_Hant, Language Group=Isol.2026.053.450.0860.109
GRPO for Seq2Seq MTModel Size=1.3B, Language=swh, Language Group=Aggl.2026.0530.0120.011
GRPO for Seq2Seq MTModel Size=600M, Language=eus, Language Group=Aggl.2026.052.810.0140.006
GRPO for Seq2Seq MTModel Size=1.3B, Language=eus, Language Group=Aggl.2026.052.570.0110.006
GRPO for Seq2Seq MTModel Size=600M, Language=bod, Language Group=Aggl.2026.052.470.0070.006
GRPO for Seq2Seq MTModel Size=600M, Language=swh, Language Group=Aggl.2026.052.220.0090.009
GRPO for Seq2Seq MTModel Size=1.3B, Language=ces, Language Group=Fus.2026.051.80.0060.015
GRPO for Seq2Seq MTModel Size=600M, Language=tur, Language Group=Aggl.2026.051.790.0050.006
GRPO for Seq2Seq MTModel Size=1.3B, Language=tur, Language Group=Aggl.2026.051.690.0020.005
GRPO for Seq2Seq MTModel Size=600M, Language=ben, Language Group=Fus.2026.051.680.0040.006
GRPO for Seq2Seq MTModel Size=600M, Language=zho_Hans, Language Group=Isol.2026.051.410.030.037
GRPO for Seq2Seq MTModel Size=1.3B, Language=zho_Hans, Language Group=Isol.2026.051.150.0290.036
GRPO for Seq2Seq MTModel Size=1.3B, Language=ben, Language Group=Fus.2026.051.030.0020.003
GRPO for Seq2Seq MTModel Size=600M, Language=ces, Language Group=Fus.2026.050.960.0010.009
GRPO for Seq2Seq MTModel Size=1.3B, Language=pol, Language Group=Fus.2026.050.910.0030.002
GRPO for Seq2Seq MTModel Size=1.3B, Language=bod, Language Group=Aggl.2026.050.680.0010.002
GRPO for Seq2Seq MTModel Size=1.3B, Language=jpn, Language Group=Aggl.2026.050.680.0140.011
GRPO for Seq2Seq MTModel Size=600M, Language=jpn, Language Group=Aggl.2026.050.480.0150.011
GRPO for Seq2Seq MTModel Size=1.3B, Language=bel, Language Group=Fus.2026.050.470.0010.001
GRPO for Seq2Seq MTModel Size=1.3B, Language=arb, Language Group=Root-pat.2026.050.430.0020.004
GRPO for Seq2Seq MTModel Size=600M, Language=pol, Language Group=Fus.2026.050.420.0020.001
GRPO for Seq2Seq MTModel Size=600M, Language=bel, Language Group=Fus.2026.050.370.0040.001
GRPO for Seq2Seq MTModel Size=600M, Language=yor, Language Group=Isol.2026.050.360.0010.002
GRPO for Seq2Seq MTModel Size=600M, Language=arb, Language Group=Root-pat.2026.050.130.0020.001
GRPO for Seq2Seq MTModel Size=1.3B, Language=yor, Language Group=Isol.2026.050.120.0070.001