The Arena
Two scoreboards went public on Tuesday and a line of leaked code arrived the same week. Together they say something OpenAI would rather not hear: in the personal-agent race it started, it is now the one catching up. OpenAI is developing features aimed directly at SpaceXAI's Grok
The Arena
Microsoft's quantum bet picked up a federal referee on Tuesday, and the referee's job is to try to prove the company wrong. Microsoft said it will give DARPA direct, on-site access to its latest topological quantum hardware — including qubits built on its Majorana 2 chip
The Arena
The day's money went to the unglamorous half of AI: the datasets and simulated environments that make a model trainable, and the diplomats who want a say in what it is allowed to do. Snorkel AI raised a $350 million Series E at a $3.5 billion valuation,
The Stack
Rabbit spent two years as the cautionary tale of AI hardware. On Tuesday it started selling the software instead: an agent that runs on the machines you already own. Rabbit has launched OS3, a standalone "agentic operating system" that lives in the cloud but executes work through a
The Arena
Two bets landed the same afternoon: that the next enterprise security problem is machines holding credentials, and that the next agent runs on the phone in your pocket. Cyera has raised another $400 million, from Growth Equity at Goldman Sachs Alternatives, extending the Series G that valued the data-security
The Guardrails
Microsoft spent Tuesday taking apart a criminal subscription service that turned business-email compromise into a product. The takedown is one paragraph; the numbers behind it are the story. Microsoft says it led an industry-wide disruption of EvilTokens, a phishing platform that used an AI chatbot to compromise 12,
The Guardrails
Two stories worth your time: a self-improving-AI lab that quintupled its own price in three months without shipping a model, and malware that now settles its next move by a vote of four commercial LLMs. Mirendil, the lab founded by former Anthropic researchers to build self-improving AI,
The Guardrails
The same podium produced two opposite answers to the same question on Tuesday: whether anyone outside Washington gets a say in how frontier AI is governed. President Trump used his UN General Assembly address to reject international supervision of AI outright — and to rename the technology "super intelligence"
The Frontier
Two frontier labs spent Tuesday afternoon arguing about the same thing — not who is smartest, but who costs least per task. OpenAI cut API prices for GPT-6 Sol and Luna in half on Tuesday, hours after Anthropic cut Opus 5.5 pricing by 40%. Sol drops to $2 per
The Everyday
Toyota is rebuilding its factories around robots it built itself, and the teaching method is its own workforce. China's chip makers spent the same week arguing that the model belongs on the device, not in a data centre. Toyota wants 400,000 factory robots — and its own workers
The Arena
Andreessen Horowitz spent Tuesday arguing that the pipeline into AI work needs rebuilding from the school up — and put $35 million behind the claim. a16z launched the Horowitz Andreessen Academy, an unaccredited San Francisco program that trades degrees and homework for a year of building, and started taking applications the
The Frontier
Anthropic's first release since Dario Amodei called for pacing the frontier is not a capability jump. It is a cost cut — with a guardrail bolted on. Anthropic released Claude Opus 5.5 on Tuesday, saying it performs at the level of the larger Fable 5.1 on most