Daily Research Brief 2026-05-19

📊 Token usage: estimated from retrieval and writing scale.

Covers the latest AI research, open source and industry moves, updated daily.

Editor’s Note

Cerebras soared 68% on Nasdaq debut ($95B market cap); Anthropic’s Claude Mythos beat GPT-5.5 at vulnerability exploitation; OpenAI restructured ahead of IPO around AI agents; LeCun attacked the LLM path, betting JEPA models dominate within 5 years; China’s weekly LLM calls hit 7.94T tokens, No.1 globally two weeks running.

1. Latest arXiv Papers

1. Robo-Cortex: A Self-Evolving Embodied Agent via Dual-Stream Adaptation — https://arxiv.org/abs/2605.18729

2. Beyond SFT-to-RL: PRISM Alignment Framework for Multimodal Agents — https://arxiv.org/abs/2604.28123

3. Pixel-Searcher: Knowledge-Guided Visual Perception for Efficient Search — https://arxiv.org/abs/2605.12497

4. World Model for Robot Learning: A Comprehensive Survey — https://arxiv.org/abs/2605.00080

5. OHP-RL: Online Human Preference as Guidance in Reinforcement Learning

6. Constrained MPC-Based Motion Planning for Morphing Robots

7. PosterReward: Preference Alignment for High-Quality Poster Generation

8. UniComp: Rethinking Video Compression Through Information-Theoretic Principles — https://arxiv.org/abs/2512.03575