{"slug": "semantic-variability-of-replies-across-llms-implications-for-designing-based", "title": "Semantic Variability of Replies Across LLMs: Implications for Designing Conversation-Based Assessment", "summary": "A study submitted to arXiv on 13 Aug 2026 found that LLM-generated replies vary semantically when the underlying model changes, with both model choice and conversational context affecting response similarity and alignment with human replies. The findings suggest that prompting and context alone may not ensure consistent responses across LLMs, underscoring the need for infrastructure and design strategies to maintain stability as models evolve.", "body_md": "# Computer Science > Computation and Language\n\n[Submitted on 13 Aug 2026]\n\n# Title:Semantic Variability of Replies Across LLMs: Implications for Designing Conversation-Based Assessment\n\n[View PDF](/pdf/2608.24920)\n\n[HTML (experimental)](https://arxiv.org/html/2608.24920v1)\n\nAbstract:This study examines whether LLM-generated replies remain semantically consistent when the underlying LLM changes. Using messages from real collaborative conversations, we compared the semantic similarity of generated replies across LLMs under two conditions: with and without preceding chat history. Results show that model choice and conversational context both affect response similarity and alignment with human replies. These findings indicate that prompting and conversational context alone may not be sufficient to preserve response consistency across LLMs, highlighting the need for infrastructure and design strategies that can maintain stable and comparable responses amid the rapid and continuous evolution of LLMs.\n\n### Current browse context:\n\ncs.CL\n\n### References & Citations\n\nLoading...\n\n# Bibliographic and Citation Tools\n\nBibliographic Explorer\n\n*(*[What is the Explorer?](https://info.arxiv.org/labs/showcase.html#arxiv-bibliographic-explorer))\nConnected Papers\n\n*(*[What is Connected Papers?](https://www.connectedpapers.com/about))\nLitmaps\n\n*(*[What is Litmaps?](https://www.litmaps.co/))\nscite Smart Citations\n\n*(*[What are Smart Citations?](https://www.scite.ai/))# Code, Data and Media Associated with this Article\n\nalphaXiv\n\n*(*[What is alphaXiv?](https://alphaxiv.org/))\nCatalyzeX Code Finder for Papers\n\n*(*[What is CatalyzeX?](https://www.catalyzex.com))\nDagsHub\n\n*(*[What is DagsHub?](https://dagshub.com/))\nGotit.pub\n\n*(*[What is GotitPub?](http://gotit.pub/faq))\nHugging Face\n\n*(*[What is Huggingface?](https://huggingface.co/huggingface))\nScienceCast\n\n*(*[What is ScienceCast?](https://sciencecast.org/welcome))# Demos\n\n# Recommenders and Search Tools\n\nInfluence Flower\n\n*(*[What are Influence Flowers?](https://influencemap.cmlab.dev/))\nCORE Recommender\n\n*(*[What is CORE?](https://core.ac.uk/services/recommender))# arXivLabs: experimental projects with community collaborators\n\narXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.\n\nBoth individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.\n\nHave an idea for a project that will add value for arXiv's community? [ Learn more about arXivLabs](https://info.arxiv.org/labs/index.html).", "url": "https://wpnews.pro/news/semantic-variability-of-replies-across-llms-implications-for-designing-based", "canonical_source": "https://arxiv.org/abs/2608.24920", "published_at": "2026-08-27 04:00:00+00:00", "updated_at": "2026-08-27 04:19:47.813444+00:00", "lang": "en", "topics": ["large-language-models", "ai-research"], "entities": ["arXiv"], "alternates": {"html": "https://wpnews.pro/news/semantic-variability-of-replies-across-llms-implications-for-designing-based", "markdown": "https://wpnews.pro/news/semantic-variability-of-replies-across-llms-implications-for-designing-based.md", "text": "https://wpnews.pro/news/semantic-variability-of-replies-across-llms-implications-for-designing-based.txt", "jsonld": "https://wpnews.pro/news/semantic-variability-of-replies-across-llms-implications-for-designing-based.jsonld"}}