arXiv AI

The Token Games: Evaluating Language Model Reasoning with Puzzle Duels

The Token Games (TTG) is an evaluation framework that pits language models against each other by having them create and solve programming puzzles. Using pairwise duels and Elo ratings, the authors benchmarked ten frontier models, achieving rankings comparable to established tests while spending under $200 and requiring no human puzzle creation. The study highlights that generating high-quality puzzles remains difficult for current models and proposes a new paradigm for reasoning evaluation that also tests creativity and task creation.

arXiv AI
Aug 17

The Metacognitive Bottleneck: Japanese Riddles Reveal Fundamental Limits of Machine Insight and Self-Evaluation in Reasoning AI

arXiv:2509. 14704v3 Announce Type: replace Abstract: Benchmark saturation and training-data contamination increasingly obscure whether reported gains in large language models (LLMs) reflect genuine advances in reasoning or familiarity with recurring patterns in benchmark problems.

By Masaharu Mizumoto, Dat Nguyen, Zhiheng Han, Xingfu Li, Yo Nakawake, Le Minh Nguyen
arXiv AI
Sep 17

WordPolo: Evaluating Language Models Through Iterative Semantic Feedback

WordPolo is a word‑finding task that evaluates language models by having them guess an unknown target word and receive semantic similarity feedback. Participants start with no knowledge, make iterative guesses, and receive distance scores that guide them through semantic space. The study tests recent LLMs, LRMs, humans, and a heuristic on 1,500 puzzles, revealing that while solve rates vary widely, many models make meaningful progress and exhibit human‑like strategies, highlighting the importance of assessing reasoning processes, not just final accuracy.

By Tyler McDonald, Ali Emami
arXiv AI
Oct 2

Benchmarking Prompt Optimization of Large Language Models With Chess

arXiv:2610. 00416v1 Announce Type: new Abstract: Evaluating large language models becomes increasingly challenging as their capabilities advance: benchmarks can saturate, public test sets risk contamination, and assessing harder tasks can require expensive grading or execution infrastructure.

By Timoth\'ee Lesort, Alejandra L\'opez de Aberasturi G\'omez, Tristan Karch, Tom Veniat, Philippe Modard, Karl Tuyls, Ludovic Denoyer
arXiv AI
6d ago

Can LLMs Reliably Grade Olympiad Proofs? A Study of Mathematical Verification with LLMs

The paper investigates whether large language models (LLMs) can reliably grade Olympiad-level mathematical proofs. It introduces a human-curated dataset of USAMO 2025 candidate solutions with expert grading and evaluates 20 LLM verifiers across multiple metrics, prompt styles, and inference methods, finding that current models still have significant shortcomings. To improve performance, the authors propose TROJAN, an iterative self-critique pipeline for generating adversarial proofs, and MABGrader, a Multi-Armed Bandit framework that outperforms the state-of-the-art ProofGrader by 26.4% in Quadratic Weighted Kappa and reduces grading error by 14%.

By Azim Ospanov, Zijin Feng, Ding Ding, Chengwu Liu, Haoli Bai, Jiacheng Sun, Lifeng Shang, Farzan Farnia
arXiv AI
Jun 24

Benchmarking LLMs' Mathematical Reasoning with Unseen Random Variables Questions

arXiv:2501. 11790v5 Announce Type: replace-cross Abstract: Recent studies have raised significant concerns regarding the reliability of current mathematics benchmarks, highlighting issues such as simplistic design and potential data contamination.

By Zijin Hong, Hao Wu, Su Dong, Junnan Dong, Yilin Xiao, Yujing Zhang, Zhu Wang, Feiran Huang, Linyi Li, Hongxia Yang, Xiao Huang
arXiv AI
Jun 10

ComBench: A Benchmark for Rigorous Proof Reasoning and Constructive Realization in Olympiad-Level Combinatorics

arXiv:2606. 10479v1 Announce Type: new Abstract: Combinatorics is central to Olympiad-level mathematical problem solving, requiring deep discrete reasoning, creative constructions, and rigorous structural insight.

By Shunkai Zhang, Haoran Zhang, Yun Luo, Qianjia Cheng, Haodi Lei, Yizhuo Li, Runzhe Zhan, Zhilin Wang, Bangjie Xu, Yucheng Su, Xinmiao Han, Xiaoye Qu, Dongrui Liu, Zhouchen Lin, Yu Qiao, Ning Ding, Yafu Li, Yu Cheng