not much happened today

**Z.ai launched GLM-5.3**, a coding- and cyber-focused model with significant gains on agentic and security benchmarks, achieved through scaled post-training rather than a larger base model. **Alibaba released Qwen3.8-27B**, a native multimodal dense model under Apache 2.0 with a 262K native context extendable to 1M, designed for real-world coding and office workflows, with broad inference support from multiple platforms. **DeepSeek V4-Pro** and **RedNote's dots3-note**, a 280B multimodal MoE model with 16B active parameters and 512K context, continue the China open-model wave, introducing new RL methods like TEMPO for long-horizon self-evaluation. The ecosystem features multiple Chinese labs specializing in open models with different strengths. DeepSeek's harness is highlighted as a modular agent runtime infrastructure with replaceable components and lifecycle management via Cordis.