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Reasoning Traces Shape Outputs but Models Won’t Say So

arXiv:2603.20620v1 Announce Type: new Abstract: Can we trust the reasoning traces that large reasoning models (LRMs) produce? We investigate whether these traces faithfully reflect what drives model outputs, and whether models will honestly report their influence. We introduce Thought Injection,…

Seed1.8 Model Card: Towards Generalized Real-World Agency

arXiv:2603.20633v1 Announce Type: new Abstract: We present Seed1.8, a foundation model aimed at generalized real-world agency: going beyond single-turn prediction to multi-turn interaction, tool use, and multi-step execution. Seed1.8 keeps strong LLM and vision-language performance while supporting a unified agentic…

Agentic AI and the next intelligence explosion

arXiv:2603.20639v1 Announce Type: new Abstract: The “AI singularity” is often miscast as a monolithic, godlike mind. Evolution suggests a different path: intelligence is fundamentally plural, social, and relational. Recent advances in agentic AI reveal that frontier reasoning models, such as…

mSFT: Addressing Dataset Mixtures Overfiting Heterogeneously in Multi-task SFT

arXiv:2603.21606v1 Announce Type: cross Abstract: Current language model training commonly applies multi-task Supervised Fine-Tuning (SFT) using a homogeneous compute budget across all sub-datasets. This approach is fundamentally sub-optimal: heterogeneous learning dynamics cause faster-learning tasks to overfit early while slower ones…

Attention in Space: Functional Roles of VLM Heads for Spatial Reasoning

arXiv:2603.20662v1 Announce Type: new Abstract: Despite remarkable advances in large Vision-Language Models (VLMs), spatial reasoning remains a persistent challenge. In this work, we investigate how attention heads within VLMs contribute to spatial reasoning by analyzing their functional roles through a…

Deep Reinforcement Learning and The Tale of Two Temporal Difference Errors

arXiv:2603.21921v1 Announce Type: cross Abstract: The temporal difference (TD) error was first formalized in Sutton (1988), where it was first characterized as the difference between temporally successive predictions, and later, in that same work, formulated as the difference between a…