shwetank (@shwetankumar) 's Twitter Profile
shwetank

@shwetankumar

AI, Physics, SWE, Investor . Opinions my own. (shwetank-kumar.github.io)

ID: 2505869756

calendar_today19-05-2014 00:12:08

507 Tweet

63 Followers

114 Following

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The U.S. will soon spend more electricity thinking than making steel, aluminum, and cement combined. And the plan is... more power plants? My thoughts below!

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India's datacenter water debate is missing one thing: the comparison. Thermal power (today): 2,100B litres Textiles (today): 580B Datacenters (2030): 358B AI Afterhours runs the math tomorrow 👇 open.substack.com/pub/aiafterhou…

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India's datacenter water debate is missing a comparison. Thermal power: 2,100B litres/year Textiles: 580B litres/year (at 2x best-practice waste) Datacenters: 150B litres/year → 358B projected by 2030 The framing problem — and the return math nobody ran aiafterhours.substack.com/p/compared-to-…

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A guy used an AI coding assistant to control his robot vacuum with a PS5 controller. Got access to 7,000 of them across 24 countries. The entire IoT security model was built on one bet: exploits are expensive to find. AI just made them free. aiafterhours.substack.com/p/the-accident…

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Jensen built an empire on FLOPS. At GTC 2026, he pitched efficiency instead. Perf/watt got more stage time than raw throughput. NVFP4. Vera Rubin's power envelope. The company that made "more transistors" a personality trait just admitted the game changed. aiafterhours.substack.com/p/jensen-huang…

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Sora dying isn't about video generation but the opportunity cost of compute being too high. Every GPU-hour on consumer video is a GPU-hour not serving enterprise inference. OpenAI just discovered that token generation has a market price, and Sora was burning tokens below cost.

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Forbes est. ~$15M/day inference cost at $2.1M lifetime revenue. Sora was a great product but an economics failure. Inference is multidimensional and OpenAI unf. optimized exactly one dimension.

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Supply chain attack on a model routing library. When agents pick which model to call, every dependency in that chain becomes an attack surface. Routing isn't just engineering anymore — it's risk management.

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This was February. Now Warren and Hawley are demanding mandatory energy reporting from data centers too — hourly loads, actual rates paid, who funds grid upgrades. 300+ state bills in six weeks. The free ride on ratepayer-subsidized AI power is ending. aiafterhours.substack.com/p/the-gigawatt…

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Four npm supply chain attacks in one month. Axios (100M downloads) compromised last night. This is the security economics breakdown I wrote about in Feb, playing out in real time. What's happening + what to check: aiafterhours.substack.com/p/the-npm-ecos…

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$2B on photonics because moving data costs 30-100x more energy than computing it. Jensen spent a decade selling FLOPS and is now buying plumbing.

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Heat is waste energy. A data center that warms its neighborhood 9C is one converting electricity into atmosphere instead of inference. Fixing the data movement will fix the heat.

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While we've heard "too dangerous to release" before — OpenAI said it about GPT-2 with 124M parameters. Yet CVE-2026-4747 is very real. 17-year-old FreeBSD RCE, no human team ever caught it. The boy-who-cried-wolf problem is that sometimes the wolf actually shows up.

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Fascinating move. Meta rebuilt their entire training stack and decided the infra is worth more than open weights. Clearest signal yet that the GPU stack is unbundling!

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$121 billion on compute in 2028. $85 billion in projected losses. Both companies report profit when you strip out training costs — which tells you training is the whole game right now. Inference is >50% of revenue for both!

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Same model class, opposite release strategies. One restricts to 40 orgs, one pushes to thousands. Both confirm AI just repriced vulnerability economics — offense and defense costs collapsing simultaneously.

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Same token pricing, better benchmarks. More useful output per dollar — that's the whole Anthropic financial thesis right now. Their revenue trajectory makes more sense when you look at unit economics, not model size. aiafterhours.substack.com/p/openai-vs-an…