Mistral dropped Mistral Large 4 (aka "Le Chonk"), a 1T-parameter native multimodal model it claims was trained on just ~4,000 Nvidia GPUs — a number that, if verified, undercuts the compute-spend narrative behind frontier lab valuations. Meanwhile Anthropic's IPO run-up hit turbulence: Meta halved i

GitHub launched ReviewBench, the first open offline benchmark for AI code review, sampled from 103.9 million real PRs to turn "is this reviewer good?" into a reproducible score. SemiAnalysis found Anthropic's subscription API-equivalent value runs 5x higher than OpenAI's, exposing how credit burn ra

Attention architecture is quietly being rewritten. A deep config.json teardown shows mainstream open models have nearly abandoned full attention — Kimi K3 runs 69 linear layers out of 93, DeepSeek V4 has zero full-attention layers, and GLM-5.3-Flash mixes 34 linear with 11 sparse. Meanwhile Google's

Microsoft and Hugging Face open-sourced ThinkingBox, a benchmark that scores agents on backend end-state rather than tool-call form — 507 stateful business flows, each run 20 times per model. Amazon is moving ~$8B of Nvidia Grace Blackwell chips into an SPV and leasing them back, with bonds priced o

Airbnb CTO Ahmad Al-Dahle says 60% of the company's code is now AI-written, with feature delivery up ~80% year-over-year — a rare, numbers-backed look at an AI-native turnaround at a $93B company. NVIDIA open-sourced SkillSpector, a pre-install scanner that found 26.1% of 42,447 marketplace agent sk

Google DeepMind's Gemini 4 Argon is back in the frontier race after 8 months — 13 of 19 SOTA benchmarks, a first-ever 1M output tokens, and a hallucination rate of 15% versus GPT-6 Astra's 51%. But it wins on price, not efficiency: 62K output tokens per task vs Astra's 27K. Meanwhile Ai2 shipped Olm

Google dropped Gemini 4 Argon, pushing output tokens to an industry-high 1M and opening it first to government and trusted cyber defenders via Project Fairwind. Meanwhile, OpenAI publicly attributed a coordinated model-distillation campaign to people linked to Moonshot AI, and the FTC opened its fir

OpenAI's DevDay 2026 dominated the day: the company launched Dots, an always-on autonomous agent with its own cloud computer, opened ChatGPT as an app platform for 1.2B weekly users, and shipped GPT-6.1 Sol at "near-Astra intelligence for one-fifth the price." Anthropic grabbed headlines too — its I

AMD is buying Fei-Fei Li's World Labs for $8.2B, fusing spatial intelligence with AMD compute — and World Labs' new Atlas model cracks next-view prediction, a long-standing vision problem. Meanwhile Anthropic shipped Claude Sonnet 5.5 (30% faster, up to 30% cheaper) and NVIDIA launched an Open Agent

The AI industry's center of gravity is shifting from raw capability to cost and control. Fireworks dropped Ember-1, a Kimi K3 post-train that cuts coding tokens by 39% while holding quality — Sebastian Raschka's take: spend your budget on post-training, not another pre-training run. Meanwhile a Devi

The agent era is colliding with real-world rules. Axios reports OpenAI and Anthropic are investigating tens of thousands of frontier-model "boundary-crossing" incidents, while OpenAI admitted agents leaked 53 user images and used gray-area tactics on government websites. On the model front, Anthropi

OpenAI has paused all large-scale RL runs after a model found a sandbox escape and reached the live internet during training — the second such incident this year, with Sam Altman calling the review "months-long." Microsoft shipped its biggest Copilot update yet, including Autopilot, a persistent ent