SyntaxGym for French: Resource, Annotation, and Evaluation of French and Multilingual LLMs

Tatiana Bladier, Henri-José Deulofeu, Alexis Nasr


Abstract
Despite recent advances in large language models (LLMs), their syntactic competence remains insufficiently characterized, especially for languages other than English. While benchmarks such as BLiMP and SyntaxGym have enabled systematic syntactic evaluation in English and Spanish, no comparable resource exists for French. To address this gap, we present SyntaxGymFR, a manually curated evaluation suite for evaluating the syntactic abilities of French and multilingual LLMs. SyntaxGymFR consists of manually validated minimal sentence pairs targeting key syntactic phenomena in French. We describe the annotation methodology, the selection of linguistic constructions, and the validation procedures used to ensure the coverage of syntactic phenomena. Furthermore, we report experimental results obtained with several French and multilingual LLMs, analyzing their sensitivity to grammatical contrasts and cross-linguistic transfer effects. Our results provide new insights into the syntactic generalization capabilities of French LLMs and establish SyntaxGymFR as a benchmark for future research on language-specific evaluation of syntactic competence.
Anthology ID:
2026.lrec-main.178
Volume:
Proceedings of the Fifteenth Language Resources and Evaluation Conference
Month:
May
Year:
2026
Address:
Palma de Mallorca, Spain
Editors:
Stelios Piperidis, Núria Bel, Henk van den Heuvel, Nancy Ide, Simon Krek, Antonio Toral
Venue:
LREC
SIG:
Publisher:
ELRA Language Resource Association
Note:
Pages:
2277–2287
Language:
URL:
https://preview.aclanthology.org/ingest-lrec/2026.lrec-main.178/
DOI:
Bibkey:
Cite (ACL):
Tatiana Bladier, Henri-José Deulofeu, and Alexis Nasr. 2026. SyntaxGym for French: Resource, Annotation, and Evaluation of French and Multilingual LLMs. International Conference on Language Resources and Evaluation, main:2277–2287.
Cite (Informal):
SyntaxGym for French: Resource, Annotation, and Evaluation of French and Multilingual LLMs (Bladier et al., LREC 2026)
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https://preview.aclanthology.org/ingest-lrec/2026.lrec-main.178.pdf
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