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Mathematical Reasoning on BRUMO

80AccuracyGRPO
28.977642.223855.4768.7162Dec 18, 2025Jan 7, 2026Jan 27, 2026Feb 16, 2026Mar 8, 2026Mar 28, 2026Apr 18, 2026

Evaluation results

MethodLinks
GRPOBackbone=DeepSeek-R1-Distill-Qwen-1.5B2026.0480
SPSBackbone=DeepSeek-R1-Distill-Qwen-1.5B2026.0480
QuestABackbone=OpenMath-Nemotron-1.5B, Sampling Strategy (@k)=@32, Dynamic Sampling=true, Training Steps=2000, Train Batch Size=128, Rollout N=16, Max Context Length=32k, Token Budget=2.6x10^8k2025.1267.5
JustRL-NemotronBackbone=OpenMath-Nemotron-1.5B, Sampling Strategy (@k)=@32, Dynamic Sampling=false, Training Steps=3440, Train Batch Size=256, Rollout N=8, Max Context Length=16k, Token Budget=1.1x10^8k2025.1266.88
GSPOBackbone=DeepSeek-R1-Distill-Qwen-1.5B2026.0466.67
BackboneBackbone=OpenMath-Nemotron-1.5B, Sampling Strategy (@k)=@322025.1261.67
DeepSeek-R1-Distill-Qwen-1.5BType=Base Model2026.0460
DAPOBackbone=DeepSeek-R1-Distill-Qwen-1.5B2026.0460
JustRL-DeepSeekSampling strategy=@32, Backbone=DeepSeek-R1-Distill-Qwen-1.5B2025.1252.71
ProRL-V2Sampling strategy=@32, Backbone=DeepSeek-R1-Distill-Qwen-1.5B2025.1247.29
DeepScaleR-1.5BSampling strategy=@32, Backbone=DeepSeek-R1-Distill-Qwen-1.5B2025.1240
Backbone (DeepSeek-R1-Distill-Qwen-1.5B)Sampling strategy=@32, Backbone=DeepSeek-R1-Distill-Qwen-1.5B2025.1230.94