large language models

OpenAI's GPT-5.5 arrives as a ground-up retrain with a 922K-token context window, 82.7% on Terminal-Bench 2.0, and two-tier pricing starting at $5/$30 per million tokens.

Meta releases Muse Spark, a proprietary multimodal reasoning model from its new Superintelligence Labs unit, marking a sharp departure from its open-weight Llama strategy after a nine-month infrastructure rebuild.

Chinese AI lab Z.ai has released GLM-5.1 under the MIT license, a mixture-of-experts model that claims the top score on the SWE-Bench Pro coding benchmark while introducing agentic capabilities designed to sustain autonomous work sessions lasting up to eight hours.

An anonymous trillion-parameter AI model that topped OpenRouter usage charts and triggered widespread speculation about a stealth DeepSeek V4 launch turned out to be Xiaomi's MiMo-V2-Pro, signaling the smartphone and EV maker's escalating ambitions in the AI model race.

Meta postpones its next-generation Avocado AI model by at least two months after benchmarks show it trailing rivals, raising questions about the company's $135 billion AI investment.

Google DeepMind's Gemini 3.1 Pro launches with a 2.5x reasoning improvement over its predecessor, topping the ARC-AGI-2 benchmark at 77.1% and ranking first across most tracked evaluations.