Thread summary card
Across the thread, the pattern has been the same: big AI and hardware efforts are moving from public claims to expensive, closed projects, while key details stay unresolved. xAI, OpenAI, Meta, Microsoft, and others are hiring each other’s people, filing chip patents, and building the power, data center, and robot systems those plans need. At the same time, questions remain about whether Grok used OpenAI outputs, whether the new chip designs can be built as described, and whether fusion, geothermal, robot trucks, and humanoids can meet their cost targets. The latest development is David Silver’s $1.1 billion raise around his view that LLMs have a ceiling; what investors actually bought is still being tested.
The thread so far generated by gpt-5.4-mini, last updated 5/19/2026, 12:01:05 AM
On April 30, cross-examined in his own lawsuit against OpenAI, Elon Musk acknowledged that xAI used distillation from OpenAI's models to build Grok, a practice absent from every public xAI model card and prohibited under OpenAI's terms since at least early 2023, before xAI shipped its first model.
Kyle Kosic, the xAI co-founder who assembled a 200,000-GPU supercluster in Memphis, left OpenAI in early April for Jeff Bezos's Project Prometheus, a physical-world AI lab that has raised $6.2 billion and is seeking $100 billion from sovereign wealth funds.
A sixth researcher from Meta's AI division crossed to Mira Murati's startup last week. The names add up to something specific: the people who built PyTorch, Segment Anything, and SAM3D are now in one closed room.
Application US 2026/0093634, published April 2 and naming Clive Chan as lead inventor, describes a memory architecture with no commercial equivalent. The public story is earbuds. The patent is something else.
Aniruddha Kembhavi, last author on the 50-person Molmo paper at AI2, joined Meta's London lab this month after five months at Wayve. First author Matt Deitke was already at Meta; both poles of that author list are now on Meta's payroll.
Two 2022 Nadella emails in evidence in 4:24-cv-04722 show a CEO who named Microsoft's OpenAI dependency as an IBM-style trap before signing. The exclusivity clause survived until April 27, 2026; Microsoft launched its first proprietary AI models three weeks before that date.
Fervo Energy closed $421 million in non-recourse project financing for Cape Station in March 2026, the first such deal for an enhanced geothermal project. The key to the close was a reserves certification written in oil-and-gas language.
Helion's Polaris set a private-sector temperature record in February on deuterium-tritium, a fuel its commercial plant will not use. With 30 months left on its Microsoft contract, the company is still building prototype testbeds, not grid interconnection teams.
Neuralink decoded Kenneth Shock's imagined speech in March 2026 and released no word error rate. Stanford's 2023 benchmark on the same problem is 23.8% WER on a 125,000-word open vocabulary.
Microsoft's February 2025 Majorana 1 chip sits outside its own Nature paper's verified claims and outside Azure Quantum's provider list. The physicist who forced Microsoft's 2018 Majorana retraction calls the new work essentially fraudulent.
Two independent groups published amidinium chemistry in Science 14 months apart. The barrier to a utility purchase order has moved to the warranty desk.
Tao Gui's NLP-LI lab at Fudan and Qiji Zhifeng automated the harness iteration cycle that most coding-agent shops run by hand. The diagnostic tool that makes it efficient is not in the public release.
No utility could supply xAI's 1.1-gigawatt ask in Memphis, so it moved 46 trailer-mounted turbines across the state line and ran them without air permits. The Justice Department has now filed a court notice that it may intervene on xAI's behalf.
El Paso Electric CEO Kelly Tomblin told the El Paso Times in 2024 that Meta required solar. The CCN filing shows 813 gas generators, a 1.5-million-gallon daily water draw, and a $473 million plant whose post-bridge costs land in a future PUC docket.
China suspended its second wave of rare earth export controls in November, not its first. Tesla told investors it is seeking a magnet license; the first grants went to Chinese manufacturers and U.S. automakers' suppliers.
Starlink's connectivity segment pencils to roughly $122 billion at steady state. SpaceX is asking for $1.75 trillion; the $1.3 trillion gap sits on two technologies SpaceX's own S-1 calls unproven.
The $6.2 billion ceiling sits $1.7 billion above the five-year budget request, with the gap reserved for foreign military sales. Andromeda's refueling requirement marks a shift from periodic inspection to persistent close-approach, and Astroscale has $61 million on contract to prove the fuel side above GEO this summer.
Aurora launched driverless trucking in Texas in May 2025 with an observer in the cab. A company running Freightliner hardware cleared the same corridor just under twelve months later with no one aboard, at $1.89 per mile.
Kroger's $55 million Groveland grid ran on Ocado bots for four years and never hit the order volumes its cost structure needed. When it closed in January 2026, 935 workers lost their jobs and the picking work moved to gig contractors at 2,700 Kroger stores.
Hanna Hajishirzi's last arXiv submission came seven days before she joined Microsoft Superintelligence. OLMo's model flow expertise now runs inside a closed lab; AI2 has said it cannot afford frontier-scale open model work anymore.
Filed October 2024 and published April 2026, application US18/903,427 names three former Google engineers among six inventors, two of whom stopped at Lightmatter between Google and OpenAI. The architecture was locked a year before Broadcom's role was announced.
El Paso Electric is constructing a dedicated 366-megawatt natural gas plant for Meta's data center, with Meta paying all costs for five years. After that window closes, the $473 million McCloud facility enters the rate base for 460,000 customers at roughly $7 a month each.
Tsinghua's October 2025 Nature paper reached 604 Wh/kg, against 255 Wh/kg for leading commercial packs. The 500-plus cycle figure comes from coin cells; at this density tier, no group has published pouch endurance past 100 cycles.
A Chinese research consortium's self-evolving harness claims 77% on Terminal-Bench 2. Its nearest rival hits 76.4% and is absent from the comparison table.
Governor Morrisey called the Putnam County campus multibillion-dollar; Google hasn't confirmed a cost or a start date. The tariff that would power it has sat 16 months without PSC approval.
Ocado's cube-grid sheds projected up to $100 million per module in annual revenue at Monroe's seven-module flagship. American online grocery, at roughly 10 percent of household spending, never generated the order density that math required.
Fervo Energy's May 13 IPO priced the company at $10 billion on a cost-reduction thesis that Cape Station's 100-megawatt Phase 1 has not yet confirmed.
Helion started building its commercial fusion plant in July 2025 before its prototype demonstrated net electricity, a milestone first promised in 2024. Two years from the Microsoft deadline, the plant's operations director and engineering director are still recruiting.
Aurora's Q1 filing confirms driverless loads priced below the human-carrier cost floor. The path to gross-margin breakeven requires 200 trucks by December; Roush is starting from 25.
Google's March 30 whitepaper cut the qubit estimate to break Bitcoin's secp256k1 cryptography by an order of magnitude, to roughly 500,000 physical qubits. The attack circuits remain unpublished; no outside team has independently derived the same floor.
Starlink crossed 10 million subscribers in 2025 on revenue per user that fell 18% to $81 a month, a decline SpaceX expects to continue. Hardware replacement at $400,000 per satellite runs $80.70 per subscriber per year before launch, one month's subscription fee consumed by the fleet's own maintenance.
The Space Force chose a $398 million prototype over a $2 billion competition it canceled before a winner was named. Two AEHF satellites have crossed their 14-year design ceiling; a third crosses in September 2027, and the prototype that would validate a replacement reaches orbit no earlier than 2030.
Schaeffler committed to between 1,000 and 2,000 humanoid robots from a startup funded entirely by its founder, then signed itself as that startup's preferred actuator supplier.
Application US18/903,427, published April 2, describes an inference chip designed for 20 HBM stacks where Nvidia's current data center GPU ships 8. The $18 billion buildout stalled May 8 when Broadcom said it would finance the first phase only if Microsoft commits to buying 40% of the chips.
Menlo Research open-sourced full hardware blueprints for its Asimov v1 humanoid on April 27, targeting a unit price under $30,000. Publishing the MuJoCo simulation model turns every lab training on that geometry into a contributor to a shared locomotion corpus.
Silver's April 2025 paper with Richard Sutton called the LLM era a ceiling. Sequoia and Lightspeed priced that argument at $5.1 billion; Nvidia followed with a chip deal that clarifies what they bought.