Meta Muse Spark

Meta launches Muse Spark (codename Avocado), its first proprietary model from Superintelligence Labs. Open-weight versions planned. Mango world model for video still in development.

AI2 OLMo 3.1

The Allen Institute for AI (AI2) has released OLMo 3.1, a family of fully open 32 billion parameter reasoning models. Unlike most open-weight releases, OLMo 3.1 ships with the complete training data, training code, evaluation scripts, and intermediate checkpoints, making it the most transparent frontier model ever published. The Think 32B variant gains 5+ points on AIME, 4+ on ZebraLogic, 4+ on IFEval, and over 20 points on IFBench compared to OLMo 3. AI2 calls the Instruct 32B variant the most capable fully open chat model to date.

Alibaba Qwen3.5

Alibaba has released Qwen3.5, headlined by a 397 billion parameter Mixture-of-Experts model with 17 billion active parameters per token. Shipped under Apache 2.0 on Hugging Face, Qwen3.5 scores 93.3% on AIME 2026, 85.0 on LiveCodeBench v6, and 76.8% on SWE-Bench Verified, putting it in frontier territory for math, coding, and agent tasks. The broader Qwen3.5 family spans dense models from sub-1 billion up to 32 billion parameters, plus sparse MoE variants, giving developers open-weight options at every scale.