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ResearchFormerly WizWand

Multi-hop Question Answering on 2WikiMultiHopQA (EM, Tok)

48.3EMCARL
18.24426.04733.8541.653May 27, 2026Jun 2, 2026Jun 9, 2026Jun 16, 2026Jun 23, 2026Jun 30, 2026Jul 7, 2026
Updated 3mo ago

Evaluation results

MethodLinks
CARLModel Scale=7B-Inst.2026.0548.31,139
CARLModel Scale=3B-Inst.2026.0544.71,394
IGRPOBackbone=Qwen2.5-7B-Instruct, Type=Tree-based2026.0743.8—
GiGPOBackbone=Qwen2.5-7B-Instruct, Type=Chain-based2026.0743.6—
IGPOBackbone=Qwen2.5-7B-Instruct, Type=Chain-based2026.0742.5—
Search-R1 PPOModel Scale=7B-Inst.2026.0541.71,775
IGRPOBackbone=Qwen2.5-3B-Instruct, Type=Tree-based2026.0740.2—
Search-R1Backbone=Qwen2.5-7B-Instruct, Type=Chain-based2026.0740.1—
GiGPOBackbone=Qwen2.5-3B-Instruct, Type=Chain-based2026.0737—
Search-R1 GRPOModel Scale=7B-Inst.2026.0536.81,827
StepSearchBackbone=Qwen2.5-7B-Instruct, Type=Chain-based2026.0736.6—
Tree-GRPOBackbone=Qwen2.5-7B-Instruct, Type=Tree-based2026.0735.6—
ZeroSearchBackbone=Qwen2.5-7B-Instruct, Type=Chain-based2026.0735.2—
IGPOBackbone=Qwen2.5-3B-Instruct, Type=Chain-based2026.0734.9—
Search-R1 GRPOModel Scale=3B-Inst.2026.0534.31,960
SFT (rej. sampled)Model Scale=7B-Inst.2026.0532.61,683
Search-R1 PPOModel Scale=3B-Inst.2026.0532.11,861
StepSearchBackbone=Qwen2.5-3B-Instruct, Type=Chain-based2026.0732—
Search-R1Backbone=Qwen2.5-3B-Instruct, Type=Chain-based2026.0731.9—
Tree-GRPOBackbone=Qwen2.5-3B-Instruct, Type=Tree-based2026.0731.7—
ZeroSearchBackbone=Qwen2.5-3B-Instruct, Type=Chain-based2026.0730—
R1-InstructBackbone=Qwen2.5-3B-Instruct, Type=RL Training2026.0729.2—
R1-InstructBackbone=Qwen2.5-7B-Instruct, Type=RL Training2026.0727.5—
CoT+Tools (selective)Model Scale=7B-Inst.2026.0527.11,641
CoT+Tools (always)Model Scale=7B-Inst.2026.0526.61,938
SFT (rej. sampled)Model Scale=3B-Inst.2026.0525.11,791
CoT+Tools (selective)Model Scale=3B-Inst.2026.0521.21,732
CoT+Tools (always)Model Scale=3B-Inst.2026.0519.42,028