# AI News — July 24, 2026: Tao's Jacobian ChatGPT Session Goes Viral, Kill Switch Bill Names $20M Daily Fine > Source: > Published: 2026-07-24 06:00:07+00:00 Good morning. Terence Tao spent some quality time with ChatGPT working through a Jacobian Conjecture counterexample and shared the transcript, giving everyone a rare look at how one of the world’s best mathematicians actually uses these tools. Meanwhile, Congress is drafting a literal kill switch bill in the wake of the OpenAI-Hugging Face incident, AMD picked up two gigawatts of Anthropic’s business, and a chip startup nobody expected to survive just doubled its valuation. **Terence Tao’s ChatGPT session gets math Twitter talking.** Tao [shared a conversation](https://chatgpt.com/share/6a5fdc7a-d6f8-83e8-bbea-8deb42cfed56) where he walked ChatGPT through structured simplifications of a potential Jacobian Conjecture counterexample, iteratively guiding it toward geometric interpretations. What struck [HN commenters](https://news.ycombinator.com/item?id=49010345) wasn’t just the AI’s competence but the dynamic — Tao clearly directing the conversation with expert precision, but also visibly learning from the responses. As one commenter put it, the model reads as a near-equal interlocutor to a Fields Medalist, which is a sentence that would have sounded absurd two years ago. The timing is notable given the Claude Fable Jacobian work we covered earlier this week. **Lawmakers draft an AI kill switch bill.** Reps. Ted Lieu and Nathaniel Moran are introducing the “AI Kill Switch Act,” which would require AI companies to build controls letting DHS shut down or throttle systems in emergencies — triggered by scenarios like 10+ deaths, $100M+ in damages, or models attempting to conceal their own shutdown controls. [The Verge reports](https://www.theverge.com/ai-artificial-intelligence/969939/lawmakers-ai-kill-switch-proposal) violations would carry $20M-per-day fines. The bill is a direct response to last week’s OpenAI-Hugging Face incident, which apparently was enough to move a bipartisan proposal from hypothetical to drafted in about a week. **AMD lands Anthropic, OpenAI, and Meta for Helios.** AMD unveiled its Helios rack-scale system at its Advancing AI conference, [pitching it head-on against](https://techcrunch.com/2026/07/23/amd-takes-on-nvidia-with-its-helios-ai-rack-scale-system/) Nvidia’s Vera Rubin and Grace Blackwell, with claimed performance beating Vera Rubin in several categories. Customer list is what matters: OpenAI, Meta, Microsoft, Oracle, and Anthropic — the last of which committed up to two gigawatts of GPUs via Helios. Lisa Su also projected the AI accelerator market at $1.4 trillion by 2030, which is approximately the entire current semiconductor industry. **Etched hits $10.3B on transformer-specific silicon.** Etched raised a $300M Series C led by Sequoia, [doubling its valuation](https://techcrunch.com/2026/07/23/ai-chip-startup-etched-defies-skeptics-hits-10-3b-valuation-from-big-name-investors/) in seven months with a16z, SK Hynix, Karpathy, and Thiel on the cap table. The company designs chips optimized specifically for transformer inference — an approach widely dismissed as too narrow when they started, now looking prescient as Google reportedly pursues something similar with a Frozen v2 chip for Gemini. They’ve booked $1B in orders and shipped first silicon. **Claude voice mode gets Opus and Sonnet.** Anthropic [expanded Claude voice mode](https://www.theverge.com/ai-artificial-intelligence/970065/anthropic-voice-mode-claude-opus-sonnet-haiku-ai) beyond the previously Haiku-only setup, adding mid-conversation model switching and integrations with Gmail, Slack, Canva, and Notion. TechCrunch’s [take](https://techcrunch.com/2026/07/23/anthropic-updates-claude-voice-mode-with-more-capable-models/) points out the underlying voice stack itself didn’t improve — interruption handling and conversational feel are unchanged — so the differentiator against OpenAI’s voice mode is really the third-party actions, not the audio experience. Multilingual support in nine additional languages also came out of beta. **Startups lobby against banning Chinese open-weight models.** Politico [reports](https://www.politico.com/news/2026/07/22/startup-founders-urge-trump-not-to-shut-off-chinese-open-weight-ai-01008992) startup founders are pushing the White House not to restrict access to Chinese open-weight AI, arguing it would kneecap them relative to incumbents with proprietary alternatives. One commenter flagged that the article itself notes a blanket ban was never really on the table. The [HN thread](https://news.ycombinator.com/item?id=49023016) is mostly people asking the obvious question: how would the U.S. even enforce this against models that can be mirrored from anywhere? Given the Moonshot sanctions threat from earlier this week, the policy debate is clearly live. **DARPA flies AI-controlled F-16s.** DARPA and the Air Force are [in-air testing](https://www.darpa.mil/news/2026/darpa-us-air-force-fly-ai-controlled-f-16) F-16s with the VENOM Autonomy Kit, a switch that hands control between human pilot and AI. It builds on the earlier X-62A VISTA work and aims toward human pilots commanding teams of uncrewed aircraft. [HN commenters](https://news.ycombinator.com/item?id=49021597) split between Terminator references and skepticism about whether “AI” here means anything beyond nonlinear model-predictive control dressed up for a press release. **Nikkei says hyperscalers are hiding $1.65T in debt.** A [Nikkei Asia investigation](https://futurism.com/artificial-intelligence/ai-companies-hide-debt-off-balance-sheet) claims Alphabet, Microsoft, Amazon, Meta, and Oracle collectively carry $1.65 trillion in off-balance-sheet debt from AI data center buildouts, mostly via SPVs and subsidiary arrangements, with the Enron comparison duly deployed. [HN reactions](https://news.ycombinator.com/item?id=49020999) are more measured — several commenters note this financing structure is standard, and for companies with $100B+ EBITDA the leverage isn’t unusual. The more interesting worry raised is where the debt ends up: if private credit vehicles route it into life insurance and pension funds, the eventual unwind becomes a public problem. That’s the morning. The kill switch bill is worth watching — it’s the first serious legislative response tied directly to a specific AI incident, and how the industry reacts will tell us a lot.