Cognitive BASIC: An In-Model Interpreted Reasoning Language for LLMs

Oliver Kramer

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arXiv · 2511.16837

Cognitive BASIC: An In-Model Interpreted Reasoning Language for LLMs

Oliver Kramer

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Abstract

Cognitive BASIC is a minimal, BASIC-style prompting language and in-model interpreter that structures large language model (LLM) reasoning into explicit, stepwise execution traces. Inspired by the simplicity of retro BASIC, we repurpose numbered lines and simple commands as an interpretable cognitive control layer. Modern LLMs can reliably simulate such short programs, enabling transparent multi-step reasoning inside the model. A natural-language interpreter file specifies command semantics, memory updates, and logging behavior. Our mental-model interpreter extracts declarative and procedural knowledge, detects contradictions, and produces resolutions when necessary. A comparison across three LLMs on a benchmark of knowledge extraction, conflict detection, and reasoning tasks shows that all models can execute Cognitive BASIC programs, with overall strong but not uniform performance.

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Oliver Kramer. 2025-11-20. Cognitive BASIC: An In-Model Interpreted Reasoning Language for LLMs. https://arxiv.org/abs/2511.16837

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