The Stack
Tesla's first driverless two-seater was supposed to be the "fork in the road" moment. Instead, riders are filming it stopped in traffic and federal investigators are asking whether it was ever street-legal to begin with. Riders are filming Tesla's Cybercab stopping in
The Arena
The friction between AI and its neighbors is getting legal teeth this midday: a lab retreats from academia's loudest critics, an infrastructure startup hires a lab's alumni for its IPO run, and a Chinese court puts a prison term on jailbreaking a model. OpenAI has withdrawn
The Guardrails
Three stories today, one theme: who gets trusted. Anthropic is screening its users, Moonshot is asking investors to trust its revenue curve, and California is writing the trust rules into law. Anthropic has switched on age assurance for Claude's consumer app — anyone the safety systems flag as possibly
The Stack
The most important AI infrastructure news out of China this week is not a model — it is the plumbing underneath one. Sugon says IBGDA, a networking technique that lets GPUs drive the network card directly instead of routing every transfer through the CPU, has completed full-scale validation on a
The Everyday
Anthropic is facing a refiled class action over Claude Max pricing — and the plaintiffs' side is staffed like an FTC case, which is exactly what makes it dangerous. A refiled class action accuses Anthropic of overselling Claude's Max plan with "usage multipliers" that don'
The Stack
The open-source story today is about ownership: who holds the model, who holds the agent's instructions, and who keeps the knowledge after the chat ends. Five picks from the daily board. Colibrì (C, 27,632 stars) — The most ambitious project on the board: an inference engine, in
The Arena
Two kinds of trust shipped today: a Fields Medalist building the mathematics of "safe", and two Chinese platforms engineering agents that can explore without breaking things. **Jacob Tsimerman, who won math's Fields Medal in July, is founding an institute whose whole premise is that AI safety
The Arena
Shanghai, Inclusion·The Bund Summit: Ant Group's Alipay moved AI payments from "agents can pay" to "agents can pay trustworthily", and the demo that stole the show has four legs. **Alipay put a payment rail inside a robot dog — and a trust layer around
The Stack
OpenAI spent this week handing out its plumbing. On September 10, the company put the Agents API into public beta: a managed service that exposes the same harness and infrastructure behind Codex — context management, tool use, multi-agent orchestration — through a single API call. As we covered in our brief
The Frontier
Two stories from the research world today: an architecture paper that puts hard numbers on one of this year's more interesting ideas in model design, and a peer-review system that is quietly rewriting the economics of who gets to submit. Re-running a transformer's middle
The Stack
LoRA is a way of customizing an AI model by training a tiny add-on instead of rewriting the whole thing — the base model's weights stay frozen, and a small pair of "adapter" matrices carries the change. If you have read that someone "dropped a
The Frontier
The rule that AI-for-science requires dedicated models just broke. OpenAI's GPT-6 Astra topped a blind benchmark for predicting whether antibodies can become drugs — beating purpose-built systems without any domain-specific training. GPT-6 Astra scored 37.98 on the DDD Benchmark's antibody