SynthTextEval: Synthetic Text Data Generation and Evaluation for High-Stakes Domains

Krithika Ramesh, Daniel Smolyak, Zihao Zhao, Nupoor Gandhi, Ritu Agarwal, Margrét V. Bjarnadóttir, Anjalie Field


Abstract
We present SynthTextEval, a toolkit for conducting comprehensive evaluations of synthetic text. The fluency of large language model (LLM) outputs has made synthetic text potentially viable for numerous applications, such as reducing the risks of privacy violations in the development and deployment of AI systems in high-stakes domains. Realizing this potential, however, requires principled consistent evaluations of synthetic data across multiple dimensions: its utility in downstream systems, the fairness of these systems, the risk of privacy leakage, general distributional differences from the source text, and qualitative feedback from domain experts. SynthTextEval allows users to conduct evaluations along all of these dimensions over synthetic data that they upload or generate using the toolkit’s generation module. While our toolkit can be run over any data, we highlight its functionality and effectiveness over datasets from two high-stakes domains: healthcare and law. By consolidating and standardizing evaluation metrics, we aim to improve the viability of synthetic text, and in-turn, privacy-preservation in AI development.
Anthology ID:
2025.emnlp-demos.35
Volume:
Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing: System Demonstrations
Month:
November
Year:
2025
Address:
Suzhou, China
Editors:
Ivan Habernal, Peter Schulam, Jörg Tiedemann
Venue:
EMNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
487–499
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URL:
https://preview.aclanthology.org/ingest-emnlp/2025.emnlp-demos.35/
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Cite (ACL):
Krithika Ramesh, Daniel Smolyak, Zihao Zhao, Nupoor Gandhi, Ritu Agarwal, Margrét V. Bjarnadóttir, and Anjalie Field. 2025. SynthTextEval: Synthetic Text Data Generation and Evaluation for High-Stakes Domains. In Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing: System Demonstrations, pages 487–499, Suzhou, China. Association for Computational Linguistics.
Cite (Informal):
SynthTextEval: Synthetic Text Data Generation and Evaluation for High-Stakes Domains (Ramesh et al., EMNLP 2025)
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https://preview.aclanthology.org/ingest-emnlp/2025.emnlp-demos.35.pdf