Are Small Language Models Ready to Compete with Large Language Models for Practical Applications?

Neelabh Sinha, Vinija Jain, Aman Chadha


Abstract
The rapid rise of Language Models (LMs) has expanded their use in several applications. Yet, due to constraints of model size, associated cost, or proprietary restrictions, utilizing state-of-the-art (SOTA) LLMs is not always feasible. With open, smaller LMs emerging, more applications can leverage their capabilities, but selecting the right LM can be challenging as smaller LMs don’t perform well universally. This work tries to bridge this gap by proposing a framework to experimentally evaluate small, open LMs in practical settings through measuring semantic correctness of outputs across three practical aspects: task types, application domains and reasoning types, using diverse prompt styles. It also conducts an in-depth comparison of 10 small, open LMs to identify best LM and prompt style depending on specific application requirement using the proposed framework. We also show that if selected appropriately, they can outperform SOTA LLMs like DeepSeek-v2, GPT-4o-mini, Gemini-1.5-Pro, and even compete with GPT-4o.
Anthology ID:
2025.trustnlp-main.25
Volume:
Proceedings of the 5th Workshop on Trustworthy NLP (TrustNLP 2025)
Month:
May
Year:
2025
Address:
Albuquerque, New Mexico
Editors:
Trista Cao, Anubrata Das, Tharindu Kumarage, Yixin Wan, Satyapriya Krishna, Ninareh Mehrabi, Jwala Dhamala, Anil Ramakrishna, Aram Galystan, Anoop Kumar, Rahul Gupta, Kai-Wei Chang
Venues:
TrustNLP | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
365–398
Language:
URL:
https://preview.aclanthology.org/fix-sig-urls/2025.trustnlp-main.25/
DOI:
Bibkey:
Cite (ACL):
Neelabh Sinha, Vinija Jain, and Aman Chadha. 2025. Are Small Language Models Ready to Compete with Large Language Models for Practical Applications?. In Proceedings of the 5th Workshop on Trustworthy NLP (TrustNLP 2025), pages 365–398, Albuquerque, New Mexico. Association for Computational Linguistics.
Cite (Informal):
Are Small Language Models Ready to Compete with Large Language Models for Practical Applications? (Sinha et al., TrustNLP 2025)
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PDF:
https://preview.aclanthology.org/fix-sig-urls/2025.trustnlp-main.25.pdf