Language Model Behavior: A Comprehensive Survey
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Abstract (arXiv)
Transformer language models have received widespread public attention, yet their generated text is often surprising even to NLP researchers. In this survey, we discuss over 250 recent studies of English language model behavior before task-specific fine-tuning. Language models possess basic capabilities in syntax, semantics, pragmatics, world knowledge, and reasoning, but these capabilities are sensitive to specific inputs and surface features. Despite dramatic increases in generated text quality as models scale to hundreds of billions of parameters, the models are still prone to unfactual responses, commonsense errors, memorized text, and social biases. Many of these weaknesses can be framed as over-generalizations or under-generalizations of learned patterns in text. We synthesize recent results to highlight what is currently known about large language model capabilities, thus providing a resource for applied work and for research in adjacent fields that use language models.
Key facts. Cited by 92 papers in the map (data through 7 Oct 2026). Builds on 285 of its 393 references that are in the map. First posted on arXiv 20 Mar 2023.
Builds on
285 of 393 references.
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Citing papers per year: 2023: 22; 2024: 24; 2025: 34; 2026: 12.
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- 2024Unraveling Cross-Modality Knowledge Conflicts in Large Vision-Language Modelscited by 28
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- 2026Latent Planning Emerges with Scale14 Apr 2026
- 2026How Open Must Language Models be to Enable Reliable Scientific Inference?27 Mar 2026
- 2026Daily and Weekly Periodicity in Large Language Model Performance and Its Implications for Research6 Feb 2026
- 2026The Grammar of Transformers: A Systematic Review of Interpretability Research on Syntactic Knowledge in Language Models9 Jan 2026
- 2026Enhancing Linguistic Competence of Language Models through Pre-training with Language Learning Tasks6 Jan 2026
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