not much happened today

**GPT-5** leads Sudoku-Bench solving 33% of puzzles but 67% remain unsolved, highlighting challenges in meta-reasoning and spatial logic. New training methods like **GRPO fine-tuning** and "Thought Cloning" show limited success. Research on "looped LLMs" suggests pretrained models benefit from repeated computation for better performance. **Baidu's ERNIE-4.5-VL-28B-A3B-Thinking** offers lightweight multimodal reasoning with Apache 2.0 licensing, outperforming **Gemini-2.5-Pro** and **GPT-5-High** on document tasks. **Databricks ai_parse_document** preview delivers cost-efficient document intelligence outperforming GPT-5 and Claude. **Pathwork AI** uses **LlamaCloud** for underwriting automation. **Gemini File Search API** enables agentic retrieval augmented generation (RAG) with MCP server integration. **Together AI** and **Collinear** launch **TraitMix** for persona-driven agent simulations integrated with **Together Evals**. Reports highlight risks in long-running code agents like **Claude Code** reverting changes, emphasizing guardrails. Community consensus favors multiple code copilots including Claude Code, Codex, and others.