arXiv AI By Josef Chen, Erim Hayretci

FlavourBench: Ranking Frontier Language Models with Executable Culinary Ground Truth

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FlavourBench is an automated benchmark that evaluates language models on culinary tasks by providing a versioned, executable ground truth system. Each task presents eight ingredients and asks the model to propose a three‑ingredient portfolio, with all 56 possible portfolios scored by the Epicure system before model execution. The benchmark assesses 27 frontier endpoints across 534 tasks, yielding a FlavourBench Score that averages frozen task scores across families, and includes extensive statistical analysis and reproducible data releases.

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arXiv AI
Aug 28

FlavourBench: Executable Culinary Reward Maps for Language Model Evaluation and Post-Training

FlavourBench is a new evaluation framework that replaces missing answer keys with dense reward maps generated from a versioned culinary environment. Each task requires selecting a three‑ingredient portfolio from eight options, and all 56 possible portfolios are scored by Epicure before model inference. The authors evaluate 27 endpoints across 534 tasks, perform statistical tests on 351 model contrasts, and conduct a preregistered post‑training study showing that LoRA fine‑tuning on Qwen3‑0.6B improves performance on 84 anchor‑disjoint maps by 13.30 points.

By Josef Chen (Independent Researcher), Erim Hayretci (Imperial College London)
arXiv AI
Jun 3

CoEval: Ranking Language Models for Custom Tasks Without Labeled Data or Trustworthy Benchmarks

arXiv:2606. 03650v1 Announce Type: cross Abstract: Choosing or ranking language models for a specific application is hardest when no task-specific labeled data exists, and standard public benchmarks cannot be trusted, their items having likely leaked into pretraining, so scores reflect memorization rather than fitness.

By Alexander Apartsin, Yehudit Aperstein
arXiv AI
Sep 21

Balance of Benchmarks: Semantic Density Reweighting for Task-Conditioned Model Comparison

The paper introduces Balance of Benchmarks (BoB), a framework that improves task-conditioned model comparison by weighting benchmark evidence based on semantic density, equating scores across varying difficulty levels, and pooling task-relevant residuals. BoB retains all eligible benchmark data while adjusting its influence, outperforming uniform averaging on the WildScores dataset with higher Spearman correlation, lower MAE, and better shortlist hit rates. The method also reduces ranking instability when benchmarks are repeated or paraphrased, and lowers retrospective regret in model selection.

By Jhen-Ke Lin, Hong-Yun Lin