The Frontier
A mixture of experts is a way of building an AI model where, instead of one giant network doing all the work, you split it into many smaller "expert" sub-networks — and a tiny router decides, for each piece of input, which two or three of those experts actually run. Most of the model sits idle most of the time.
The Stack
Two months of silence from a project that had been shipping almost daily was the tell, and today the OpenClaw team broke it with their biggest release yet. OpenClaw 2.0 is the work of 933 contributors, and the rebuild reaches from the install screen to the browser app itself. OpenClaw 2.0 lands with a simplified install and a rebuilt browser app.
Quick Hits
A small roundup of funding and infrastructure moves that didn't make the main brief — three quick stories from the day's wire. Owner lands $240M Series D at a $2.3B valuation. The restaurant-AI agent company closed a Series D led by existing investors, valuing it at $2.3 billion just four years after launch. Owner's agents run the back office for independent restaurants — websites, marketing, ordering, and guest messaging — and the company says it now serves tens of thousands of locations.
The Stack
Reinforcement learning from human feedback (RLHF) is the training technique that teaches an AI model what people actually prefer — by using human ratings, not just text, as the signal for what counts as a good answer. It is the reason a chatbot says "I'm not sure, let me check that" instead of confidently inventing an answer, and the reason modern assistants are polite, follow instructions, and refuse harmful requests.
The Arena
Nvidia's plan to become more than the chip supplier to the AI boom — to finance the data centers themselves and share in their revenue — just hit a speed bump. Nvidia has paused the revenue-sharing and credit-support deals it struck with AI cloud companies, people familiar with the matter told The Wall Street Journal, with Reuters confirming the move. The program, first announced in July, was Nvidia's bid to co-build "AI factories" with cloud providers — supplying Blackwell GPUs while taking…
The Arena
Alibaba Cloud has switched on its first data center region in Brazil, the company's second in Latin America. The new region, launched August 27, runs two availability zones offering compute, storage, and database services to enterprise and developer customers, with enterprise-grade AI services set to roll out in phases.
The Stack
Generating code is no longer the hard part — reviewing, approving, and shipping the flood an agent produces is. That's the problem the delivery platform Harness is now attacking, and it means the next AI-boom battleground isn't the IDE, it's the gate. Harness launched a Code Repository and an AI Code Review layer built for what it calls "agent-ready development," betting that the entire software delivery cycle has to become autonomous.
The Stack
Judging a RAG system by reading its answers tells you almost nothing. That is the trap: a fluent, confident, well-cited answer can come from a model that never retrieved a single document — and a genuinely grounded one can still fail because the right text never surfaced. The way to know if retrieval is actually doing anything is to stop grading final outputs and start asking two separate questions.
The Arena
The AI build-out kept extending past the models themselves today: SK Telecom carved its data centers into a dedicated investment vehicle backed by KKR, while Kioxia moved to add a third Japanese fabrication plant for AI-driven memory demand. Two bets on the physical infrastructure underneath the boom. SK Telecom announced it will spin off its data-center business into a new company called SK Horizon, bringing in a combined 3.08 trillion won (about $2.3 billion) of equity from KKR and a…
The Stack
Nvidia just posted a $96.2 billion quarter, guided to another year of ~70% growth well into fiscal 2028, watched its stock climb 7%, and — hours later — entered serious talks to buy Hugging Face for over $13 billion. Read separately, those are two feel-good headlines about an AI industry that can't stop spending.
The Guardrails
The US Commerce Department's Bureau of Industry and Security is probing Singapore-based Apex Logistics over allegations it helped transport Nvidia AI chips and compute systems into China despite the export embargo, according to Bloomberg. The investigation centers on a suspected pipeline for Nvidia-powered servers built by Super Micro Computer that ultimately reached the mainland: equipment traveling from Taiwan to the United States, then routed through Southeast Asia and Hong Kong before…
The Arena
Anthropic commits $45B to rent 460MW of Nscale AI compute Anthropic has reportedly agreed to pay Nscale $45 billion over six years to rent about 460 megawatts of AI computing power at a data center in West Virginia built around Nvidia's Vera Rubin chips. The deal, first reported by Bloomberg on Wednesday and separately confirmed by Reuters and CNBC, is among the largest compute-procurement agreements in AI to date — a clear sign of how the compute arms race has moved from renting GPU hours to…