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HN readow 4/30/2026

Private LLM vs. ChatGPT

Comparison of private LLM deployment vs ChatGPT for business use cases, including tradeoffs and decision factors.

HN amunozo 4/30/2026

Prompt Guidance – GPT-5.5

GPT-5.5 prompt engineering guidance: use outcome-oriented, shorter prompts that define constraints and desired output format rather than over-specifying process.

LB openai.com via thasso 4/30/2026

Where the goblins came from

Anecdotal account of GPT-5.1 models unexpectedly generating goblin/gremlin metaphors across generations without clear root cause.

Ax Fei Bai, Huatong Song, Shuang Sun, Daixuan Cheng, Yike Yang, Chuan Hao, Renyuan Li, Feng Chang, Yuan Wei, Ran Tao, Bryan Dai, Jian Yang, Wayne Xin Zhao 4/30/2026

ClawGym: A Scalable Framework for Building Effective Claw Agents

Scalable framework for building and training agents in claw-style environments with file and tool interactions.

Ax Joaqu\'in Polonuer (Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA, Departamento de Computaci\'on, FCEyN, Universidad de Buenos Aires, Buenos Aires, Argentina), Lucas Vittor (Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA), I\~naki Arango (Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA), Ayush Noori (Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA, Department of Engineering Science, University of Oxford, Oxford, UK), David A. Clifton (Department of Engineering Science, University of Oxford, Oxford, UK, Oxford Suzhou Centre for Advanced Research, University of Oxford, Suzhou, Jiangsu, China), Luciano Del Corro (ELIAS Lab, Departamento de Ingenier\'ia, Universidad de San Andr\'es, Victoria, Argentina, Lumina Labs, Buenos Aires, Argentina), Marinka Zitnik (Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA, Kempner Institute for the Study of Natural and Artificial Intelligence, Allston, MA, USA, Broad Institute of MIT and Harvard, Cambridge, MA, USA, Harvard Data Science Initiative, Cambridge, MA, USA) 4/30/2026

Autonomous Knowledge Graph Exploration with Adaptive Breadth-Depth Retrieval

Tool-using agent system for knowledge graph retrieval balancing breadth-depth search with adaptive traversal.

Ax Georgianna Lin, Rencong Jiang, No\'emie Elhadad, Xuhai "Orson" Xu 4/30/2026

A Framework for Longitudinal Health AI Agents

Framework for longitudinal health AI agents supporting ongoing symptom management and patient support with accountability.