Open weights won the argument; the fights moved downstream
The board
▼ MRVL 7.2% ▼ UMC 6.7% ▲ WDAY 5.8% ▲ FIG 5.6% ▲ CRM 4.3%
- Markets — Friday's close split cleanly: enterprise software bid up (Workday, Figma, Salesforce), memory and foundry sold off (Marvell, UMC).
- Models — Opus 5 now leads the board at both ends: top intelligence at 60.7, and the best value on the board at $10/M blended.
- Open weights — Baidu's Unlimited-OCR tops Hugging Face trending with 2.6 million downloads this month; Poolside's Laguna S 2.1 holds in the top four.
The read
Four days in one edition, and the weekend's centre of gravity was Anthropic's Opus 5 — priced identically to its predecessor while claiming roughly double the knowledge-work performance. Read one way it's an efficiency release that happens to hold an ARC-AGI-3 record, and both readings survive the evidence. The more interesting disclosure arrived alongside it: Anthropic deleted more than 80% of Claude Code's system prompt with no measurable loss, diagnosing its own accumulated scaffolding as over-constraint. As models get better at verifying their own work, the harness around them gets smaller — the opposite of what a year of prompt-engineering orthodoxy predicted.
Open weights, meanwhile, stopped being contested and started being consensus. The US and China jointly signed APEC's Chengdu Statement backing open-source models; twenty-five US companies led by Nvidia, Microsoft and Meta warned against premature restrictions — with OpenAI and Anthropic conspicuously absent; DeepSeek's founders said flatly that AGI, not revenue, is the point; and the man who lost the container-orchestration war argued open weights is having its Kubernetes moment. The counter-pressure is now legal rather than technical: distillation became Washington's word of the week, double standard included, given sharper edges by a study finding Kimi K3 partly carries Claude's persona.
The capital got larger and the plumbing stranger. Nvidia locked in a $500bn memory and data-centre partnership with SK; Oracle followed 21,000 layoffs and a one-notch-above-junk downgrade with a $7bn Pentagon contract; and Stripe is reportedly weighing roughly $10bn for OpenRouter — a bet that the router beats the model. Two quieter items point the same way: AMD is closing the CUDA moat with agents rather than silicon, and HART OS argues the intelligence people actually use needn't be delivered from a data centre at all. Against that, the physical backlash hardened: the EPA moved to narrow public say on data-centre air permits, Virginia's own regulator was caught defending a data centre's pollution, and the web's commons kept draining — Anthropic crawling 38,000 pages per referred visitor, with a thirty-year-old site as the casualty.
Then the reckoning, which is where the weekend broke new ground. Debian opened a formal vote on banning LLM-assisted contributions — the third line drawn in free software this month, after Zig and Codeberg — while a Flask creator's dissent complicated the fracture. The economics turned sober in parallel: two pieces argued the productivity gains are largely an illusion, Stanford's data check called the jobs apocalypse “likely small”, and 69% of Americans backed some public stake in AI companies. Mark named the mechanism under all of it: “big software was an artifact of coordination cost”. Meta, for its part, scored its AI-optimism ad to a song about the end of the world.