{
  "title": "Daily Research Brief 2026-07-29",
  "url": "/en/posts/research-brief-2026-07-29/",
  "permalink": "https://hackcv.com/en/posts/research-brief-2026-07-29/",
  "date": "2026-07-29",
  "lastmod": "2026-07-29",
  "author": "",
  "description": "Daily research brief — AI / LLM / Agent / Computer Vision / Audio-Video / Engineering",
  "categories": ["Research Brief"],
  "tags": ["AI","LLM","Agent","Computer Vision","Audio-Video","Engineering","Daily Brief"],
  "cover": "https://picsum.photos/seed/daily-research-brief-2026-07-29/1200/675",
  "readingTime": 1,
  "wordCount": 161,
  "content": "\u003ch1 id=\"daily-research-brief-2026-07-29\"\u003eDaily Research Brief 2026-07-29\u003c/h1\u003e\n\u003cp\u003e📊 Token usage: estimated from retrieval and writing scale.\u003c/p\u003e\n\u003cp\u003eCovers the latest AI research, open source and industry moves, updated daily.\u003c/p\u003e\n\u003chr\u003e\n\u003ch2 id=\"editors-note\"\u003eEditor\u0026rsquo;s Note\u003c/h2\u003e\n\u003cp\u003eTwo signals converging into one thread: open-source models are overtaking closed-source on \u0026lsquo;scale ceiling\u0026rsquo; for the first time. Kimi K3 (2.8T params, fully open-sourced 07-27) hit the top-3 most-popular open models in Hugging Face history within 48 hours.\u003c/p\u003e\n\u003ch2 id=\"1-latest-arxiv-papers\"\u003e1. Latest arXiv Papers\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCHILL-Harness: Counterfactual Harness Learning for Efficient Reasoning in Long-Horizon Agents\u003c/strong\u003e — \u003ca href=\"https://arxiv.org/abs/2607.25825\"\u003ehttps://arxiv.org/abs/2607.25825\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSpeculate While You Reason: Teaching Agents to Predict Their Next Tool Call via Joint Agent-Speculator RL\u003c/strong\u003e — \u003ca href=\"https://arxiv.org/abs/2607.25816\"\u003ehttps://arxiv.org/abs/2607.25816\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAngelSpec: Towards Real-World High Performance Inference with Speculative Decoding\u003c/strong\u003e — \u003ca href=\"https://arxiv.org/abs/2607.25852\"\u003ehttps://arxiv.org/abs/2607.25852\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAre Prompt Optimizers Blind? Cross-Modal Visual Feedback for Automatic Prompt Optimization\u003c/strong\u003e — \u003ca href=\"https://arxiv.org/abs/2607.24354\"\u003ehttps://arxiv.org/abs/2607.24354\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLayered Scenario-Driven LLM Control\u003c/strong\u003e — \u003ca href=\"https://arxiv.org/abs/2607.22651\"\u003ehttps://arxiv.org/abs/2607.22651\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRP-OPSD: Resolution-Privileged On-Policy Self-Distillation for Multimodal Large Language Models\u003c/strong\u003e — \u003ca href=\"https://arxiv.org/abs/2607.24447\"\u003ehttps://arxiv.org/abs/2607.24447\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMany-body Tipping Dynamics of ChatGPT-like AIs\u003c/strong\u003e — \u003ca href=\"https://arxiv.org/abs/2607.25279\"\u003ehttps://arxiv.org/abs/2607.25279\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSubspace-Aligned Rewiring (SAR): 0.58% Parameters Raise Reasoning Instead of Lowering It\u003c/strong\u003e — \u003ca href=\"https://arxiv.org/abs/2607.03065\"\u003ehttps://arxiv.org/abs/2607.03065\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003c/ol\u003e\n",
  "summary": "Daily Research Brief 2026-07-29 📊 Token usage: estimated from retrieval and writing scale.\nCovers the latest AI research, open source and industry moves, updated daily.\nEditor\u0026rsquo;s Note Two signals converging into one thread: open-source models are overtaking closed-source on \u0026lsquo;scale ceiling\u0026rsquo; for the first time. Kimi K3 (2.8T params, fully open-sourced 07-27) hit the top-3 most-popular open models in Hugging Face history within 48 hours.\n1. Latest arXiv Papers CHILL-Harness: Counterfactual Harness Learning for Efficient Reasoning in Long-Horizon Agents — https://arxiv.org/abs/2607.25825\n"
}