The Arena

Companies, products, and big moves

Underdog launches a private on-device AI assistant, backed by a16z

The Arena

Underdog launches a private on-device AI assistant, backed by a16z

The privacy split in consumer AI got a new entrant tonight, GitHub turned code-review benchmarks into a vendor-bias argument, and OpenAI opened its oddest API to everyone. Underdog launched in invite-only beta: an on-device AI assistant that keeps your data on your machine and never charges you a subscription. Self-taught coder and Thiel Fellow Sigil Wen — who moved to Silicon Valley at 17 and lived in an AI hacker house with Andrej Karpathy — built his own inference engine, Husky, to run a 2

Today in AI — October 6, 2026

The Arena

Today in AI — October 6, 2026

A day of second-order moves: the labs are buying task data from software vendors instead of scraping the web, Waymo is borrowing to fund the robot world, and the biggest bank in the US just put a number on what Anthropic's latest model cost it in risk. Models & Research * OpenAI is training GPT-6 Astra on Ironclad's real contracting work. Ironclad staff helped turn 11 tasks across legal, commercial and procurement work — setting up NDAs, approval workflows, clauses that change by jurisdict

Meta, Walmart and Stripe publish the Personal Agent Protocol

The Arena

Meta, Walmart and Stripe publish the Personal Agent Protocol

The agent economy is writing its rulebook tonight: one open standard for AI bots at the checkout, a cheaper image model from Google, and Anthropic turning bug-hunting into a tiered product. Meta, Walmart, Stripe and Sierra are publishing an open "personal agent protocol" — a standard that defines how personal AI agents interact with businesses online. The group behind it reads like a cross-section of agentic commerce: Meta, Sierra, Walmart, Stripe, Shopify, Genesys, Rocket, NiCE, Decagon and I

Lambda raises up to $4B from Blackstone ahead of its IPO

The Arena

Lambda raises up to $4B from Blackstone ahead of its IPO

The neocloud money is consolidating fast, and today's inbox shows both ends of the market: a heavyweight pre-IPO round on one side, and a Google open model you can run on a phone on the other. Lambda is raising up to $4 billion led by Blackstone and Coatue at a $14.5 billion pre-money valuation — its last private round before a planned IPO. The Wall Street Journal reported the scoop from a letter to limited partners, and Reuters independently confirmed the headline terms: the round is led by t

Google signs 3.6 GW power deal, a quarter of it new nuclear

The Arena

Google signs 3.6 GW power deal, a quarter of it new nuclear

Grid capacity, not chips, is becoming the binding constraint on the AI buildout — and on the same day, the labs told an Australian inquiry they can live with mandatory incident reporting. Google has contracted 3.6 GW of power from Constellation Energy across the PJM grid — the largest electricity deal in the region's history, and the biggest single power commitment any AI company has made. The agreement covers 3,590 megawatts over 13 states, with 890 megawatts of new nuclear capacity coming fr

DeepSeek nears $12B round with Tencent and CATL ahead of IPO

The Arena

DeepSeek nears $12B round with Tencent and CATL ahead of IPO

Three stories shape the last 24 hours: a record-scale fundraise at China's most famous model lab, a first-of-its-kind hearing at New York City Hall, and Cohere rebuilding its enterprise agent platform around other people's models. DeepSeek is close to raising at least $12 billion — 80 billion yuan — in a single round that could reach roughly $14.9 billion, after investor demand outstripped the company's own target, with Tencent and battery maker CATL as the biggest contributors, people famili

Ghost sells out its first run of a $3,499 personal AI computer

The Arena

Ghost sells out its first run of a $3,499 personal AI computer

A screenless box that does nothing but run your AI agents sold out its first batch hours after preorders opened — while two much bigger money moves landed overnight, one of them entirely on the companies' own word. Ghost, a 19-year-old founder's startup, sold out batch one of Core, a $3,499 screenless computer built for one job: running your personal AI agents. The New York company emerged from stealth on Monday with an $11 million seed led by Andreessen Horowitz, alongside Abstract, Audacious

Today in AI — October 5, 2026

The Arena

Today in AI — October 5, 2026

The day the ecosystem stopped pretending everyone is a partner: Meta and Microsoft quietly cut their Claude budgets, Washington gave AI policy a new name, and New York City put lab executives under oath. Elsewhere, one model learned to drive a robot, and Mac users finally got Apple Intelligence off their disks. Models & Research * Reka AI's Rho-1 collapses the multimodal stack into a single 19-billion-parameter model. The research preview runs text, images, video and robot control as token

Groq engineers sue board over Nvidia's $20B deal

The Arena

Groq engineers sue board over Nvidia's $20B deal

Chip money is colliding with employee equity to start the week — alongside a Cerebras rebound and Europe's newest robotics unicorn. Two former Groq engineers have sued the company in Delaware, alleging the $20 billion Nvidia deal that absorbed most of the company short-changed rank-and-file employees. Benjamin Serebrin and Joshua Rubin filed the suit in Delaware around October 3–4, according to the Financial Times, which first reported it: the claim is that common shareholders "cashed out chea

Schneider Electric buys PTC for $22.6B to expand into AI

The Arena

Schneider Electric buys PTC for $22.6B to expand into AI

Industrial automation just wrote the biggest AI check of the day — and a public benchmark is quietly deflating one of the guardrail market's hottest pitches. Schneider Electric has agreed to buy PTC for about $22.6 billion in cash, its largest acquisition ever and an explicit bet on turning industrial software into an AI business. The French automation giant will pay $205 per share — a 42.3% premium to the last close, 46.1% over the 30-day average — with the deal expected to close in the third

Today in AI — October 5, 2026

The Arena

Today in AI — October 5, 2026

A quiet news day with the scaffolding on full display: nobody shipped a frontier model, but the machinery around them — disk drives, sovereign floats, bond syndicates, age checks and interest rates — all moved at once. Models & Research * A streaming-video agent that decides what to remember topped Hugging Face's daily papers. OneStreamer, from a Nanjing University team, folds perception, memory and proactive response into a single loop: it holds on to observations before it knows whether

Micron says memory gets much tighter in 2027 and 2028

The Arena

Micron says memory gets much tighter in 2027 and 2028

The squeeze that drove this year's AI buildout isn't easing — Micron's CEO says the next two years get worse. Plus a US open-weight challenger prepares its first release, and India debates whether to write its own AI rules. Memory supply will be "only getting tighter" through 2028 — and most of next year is already sold. On its fiscal Q4 call, CEO Sanjay Mehrotra said Micron sees demand exceeding supply in calendar 2027 and 2028, with greater tightness than in 2026, and that the company has no