not much happened today

**OpenAI** released its first open models since GPT-2, **gpt-oss-120b** and **gpt-oss-20b**, which quickly trended on **Hugging Face**. **Microsoft** supports these models via **Azure AI Foundry** and **Windows Foundry Local**. Key architectural innovations include **sliding window attention**, **mixture of experts (MoE)**, a **RoPE variant**, and a **256k context length**. The models use a new **MXFP4** format supported by **llama.cpp**. Hypotheses suggest **gpt-oss** was trained on **synthetic data** to enhance safety and performance, supporting the **Reasoning Core Hypothesis**. **OpenAI** announced a **$500K bounty** for red teaming with partners including **Anthropic**, **Google**, and the **UK AISI**. Performance critiques highlight inconsistent benchmarking results, with **GPT-OSS-120B** scoring **41.8%** on the **Aider Polyglot** coding benchmark, trailing competitors like **Kimi-K2** and **DeepSeek-R1**. Some users note the model excels in math and reasoning but lacks common sense and practical utility.