New startup ideas · AI and software · AI infra and compute
startup idea
Fallowgrid
Global exchange for idle GPU hours sitting in publicly funded research clusters.
Fallowgrid is a two-sided exchange where national labs, universities and public supercomputing centres list the cluster hours their allocation system leaves unused, and public agencies, grant-funded researchers and public-private consortia anywhere in the world buy them in standard units settled as credits or cash.
- Marketplace
- Government and public sector
- $10-100B market
- Network effects, winner takes most
- Global from day one
3/5
venture judge
2
similar startups, last 2 years (13 all-time)
99%
of 4 nearest real companies still alive
yes
8 matching federal grants and programs
Direction supported by government programs and grants
Test it before you build it
$1,200 · 6 weeks · 40 prospects
For $1,200 and 6 weeks, prove US university HPC centers can and will sell idle GPU hours through a broker by clearing one paid trade to a newly funded PI.
Riskiest assumption · US university HPC centers are actually permitted to sell idle GPU hours for cash to external grant holders, and at least 3 of 15 directors will list hours with a broker within 30 days.
1Focus group: who and where
The director of research computing at a US R1 university whose GPU cluster sat partly idle through summer 2026 while the fall allocation committee has not yet assigned the new cycle; on the demand side, PIs whose NSF or DOE AI awards started in the last 90 days and who have no cluster of their own.
where to find 40 · The CASC (Coalition for Academic Scientific Computation) member directory of roughly 100 US research computing centers; the CaRCC people-network Slack where these directors already talk shop; SC26 in St. Louis this November for in-person follow-up; NSF Award Search filtered to AI awards made since June 2026 to build the buying-PI list.
2Sell first, build later
A guaranteed block of 500 A100 GPU hours on a named US university cluster, scheduled to run within 30 days, with the external user agreement, invoicing and US-person screening handled by Fallowgrid - sold and cleared by hand before any platform exists.
the ask · $2.00 per A100 GPU hour, $1,000 per 500-hour block; Fallowgrid keeps 10 percent of every cleared dollar.
a real yes · A purchase order or signed service order with a dollar amount and a start date from the buying institution; 'our lab would definitely use spare hours', unpaid letters of interest and enthusiastic directors are not a yes.
3Small experiments
The first one attacks the riskiest assumption; each ends with a number that says whether to run the next.
1. Permission audit with 15 directors
$200 · 10 days
Pull 15 GPU-owning centers from the CASC directory, email each director the broker pitch, and run 20-minute calls asking two questions: does your approved rate schedule allow external cash sales today, and how many GPU hours idled in August 2026. One founder runs all calls and logs answers in a shared sheet.
keep going if · 5 of 15 directors confirm an approved external user rate that covers cash sales to outside institutions and estimate 10,000 or more idle GPU hours available this quarter
2. Priced demand test on new PIs
$300 · 10 days
Pull 30 PIs from NSF Award Search whose AI awards started since June 2026, email the offer of a 500-A100-hour block at $1,000 scheduled within 30 days, and link a one-page landing with the block price and delivery date. Book scoping calls with everyone who replies.
keep going if · 6 of 30 PIs reply asking for a quote and 4 of 30 book a scoping call
3. Clear one paid trade
$700 · 21 days
Match the most willing center to the most eager PI, have the center invoice the PI's institution at its approved external rate under its existing external user agreement, and collect Fallowgrid's 10 percent fee on a separate invoice. A lawyer reviews the two-page brokerage addendum once; the founders run the scheduling handoff by hand.
keep going if · 1 trade of at least 1,000 GPU hours ($2,000 or more) invoiced and paid, with a Fallowgrid fee of $200 or more collected, within 21 days of the match
4Collect a deposit up front
Tesla took $1,000 refundable reservations for the Model 3 and $100 for the Cybertruck before building either: the deposit is the measurement, not the revenue.
$1,000
per prospect, refundable
how · A purchase order or signed service order from the buying PI's institution for a prepaid 500-hour block, invoiced by the supplying center under its approved external user rate, with Fallowgrid's 10 percent brokerage fee invoiced separately - university buyers cannot put deposits on cards, but they issue POs for compute services routinely, so the PO is the money moving. set up: Stripe Invoicing ↗
what it reserves · A scheduled 500-hour A100 block that runs within 30 days and a slot in the first clearing cohort at the $2.00 rate.
refund · Unused hours are refunded in full if the block cannot be scheduled within 60 days of the PO date.
target · 3 purchase orders from 25 PI conversations within 6 weeks
before taking money · Do not clear any cross-border sale or sell to a non-US person before export-control counsel screens the transaction; keep the entire test on US buyers and US centers operating under their existing approved external user rates.
Go: build it if
5 of 15 centers confirm external-rate authority, 3 of them agree in writing to list hours, and 1 brokered trade of 1,000+ GPU hours is invoiced and paid within 6 weeks.
Kill: stop if
Fewer than 2 of 15 centers have or can activate permission to sell externally within 30 days, or 0 of 25 funded PIs issue a purchase order - the supply side is institutionally blocked and the exchange has nothing to clear.
5 Scripts to run itoutreach message, landing copy, deposit terms · click to open
outreach message
Your GPU nodes likely sat partly idle through August while the fall allocation cycle waits on committee. I am building Fallowgrid, a broker that matches those idle hours to newly funded NSF and DOE PIs at other institutions; you invoice at your approved external user rate, we handle the agreements and screening and take 10 percent. Do you have 20 minutes this week to check whether your rate authority covers external cash sales, and how many hours idled last month?
landing page
Funded but no GPUs? Rent idle university cluster hours. $1,000 prepays 500 A100 hours on an accredited US university cluster, scheduled within 30 days. Reserve your block - book a 20-minute scoping call.
deposit terms
Your institution issues a $1,000 purchase order for 500 A100 GPU hours at $2.00 per hour, invoiced by the supplying university center under its approved external user rate. The order reserves a scheduled block that runs within 30 days of signature. Unused hours are refunded in full if we cannot schedule them within 60 days.
Would you run this test?
One tap. The yes-share feeds the Demand pillar of this idea's score; nobody sees who answered.
Budgets are out-of-pocket estimates for a team of one to three, US market. Size the deposit to the deal, and check the terms before taking money in a regulated line.
Scorecard
One score that balances how trendy the idea is, the demand for it and its potential for 100x, with competition measured relative to every other idea in the catalog. Recent startup trends first, government priorities second.
84
Idea Score, 0-100 · raw 51.9 x 1.61
Warm
competition: more crowded than 20% of ideas · headwind x0.90
+2.3
government priorities, secondary (8 matching grants)
Trend
55
Is the wave forming now? 2025-26 entrants vs 2023-24, rounds since 2025, the sector's live-batch direction, the 2026 trend analyst.
- Entrants 2025-26 vs 2023-24 (similar companies)13
- Rounds announced 2025+ in the sector82
- Sector direction (live batch)100
- 2026 trend analyst25
Demand
52
Does anyone want it? YC's current RFS, companies already paid for something similar, the operator judge, founders' yes-rate in decks, readers who would run the test.
- YC asks for it (current RFS: idea / sector)30
- Someone already pays (similar companies, recent / all-time)100
- Operator judge: real pain25
100x potential
59
Can it return a fund? The venture judge (double weight), market-size and moat axes, neighbours still alive, the technologist judge.
- Venture judge50
- Market size axis67
- Moat axis100
- Neighbours still alive63
- Technologist judge25
Score = 100 x cbrt(Trend x Demand x 100x) x (1 - 0.5 x crowding) + government bonus (max 5), calibrated so the 95th-percentile idea scores 90 (order never changes). A geometric mean: a weak pillar cannot be papered over. Percentiles are among the 272 ideas in the catalog; the terms matched were global, exchange, idle, gpu, hours, sitting, publicly, funded.
The idea in full
- What
- Fallowgrid is a two-sided exchange where national labs, universities and public supercomputing centres list the cluster hours their allocation system leaves unused, and public agencies, grant-funded researchers and public-private consortia anywhere in the world buy them in standard units settled as credits or cash. The platform handles scheduling handoff, export-control screening and the paperwork that lets a publicly funded body sell capacity at all, with a small field team onboarding each centre. Fallowgrid takes a clip of every cleared hour.
- Why now
- The Office of Science opened The Genesis Mission: Transforming Science and Energy with AI, closing 2026-12-17, and NSF's CISE Future Computing Research closes 2026-09-10, so grant-funded AI demand is arriving on a fixed clock at institutions whose cluster utilisation is set by allocation committees; Expanse (yc X26) is being funded on unlocking wasted GPU capacity in the commercial market, which validates the supply thesis without touching public clusters.
- Wedge: first customer and entry point
- Sign three university centres in one country whose clusters idle over summer, and sell those hours to grant holders at other institutions who have just been funded and have no capacity of their own.
- Path to 100x
- Publicly funded compute is a $10-100B annual global spend with structurally poor utilisation, and an exchange that clears it is winner-takes-most because buyers go where supply is deepest and centres list where demand is thickest. Once a critical mass of centres settles in the same credit unit, that unit becomes how public research trades compute internationally and a second exchange has nothing to clear.
- Ceiling
- Idle capacity turns out to be lumpy, badly timed and low quality, so the exchange clears real volume only in narrow windows and never reaches escape velocity.
- Closest real companies, as the generator saw them
- Expanse unlocks wasted commercial GPU capacity and Computable makes GPU hours tradable by the week for commercial buyers; Fallowgrid works only the publicly funded pool, where the barrier is institutional permission and export screening rather than price, and where each centre it clears is one no commercial exchange can list.
- Main risk
- Public centres are contractually or politically barred from selling idle hours and supply never reaches the volume that makes the exchange liquid.
Five judges
Each judge scores every idea in the catalog with a named rubric; the venture judge decides whether a card is shown at all (4-5 is venture-grade).
Venture investor
3/5
Credit unit becoming the trading standard is a real winner-takes-most mechanism, but supply depends on public centres having permission to sell at all.
Bootstrapper
2/5
Field team onboarding each supercomputing centre plus export-control screening makes onboarding slow and headcount-bound before liquidity exists.
Operator
2/5
The paying buyer is a grant holder, but supply depends on university centres getting institutional permission to sell hours they were never allowed to sell.
Technologist
2/5
Export screening and scheduling handoff for public clusters is institutional permission work, not engineering that compounds with usage.
Risk
2/5
Supply depends on publicly funded centres being permitted to sell idle hours at all, plus export-control screening on every cross-border transaction.
trends
2/5
Idle academic GPUs were just as idle in 2023; the Genesis Mission and NSF CISE deadlines earn only the secondary government point.
Similar startups in the directory
Companies whose pitch matches most of the idea's terms (global, exchange, idle, gpu, hours, sitting, publicly, funded): 13 all-time, 2 from the last two years. Same matching as Idea Check.
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Payments for Marketplaces
The generator's reference companies
Real companies the model named as closest when it wrote the card, with their fate. A check mark is a company the radar could verify in its directory.
Public money in this direction
US federal grants, SBIR/STTR awards and open opportunities from the radar's public-money feed, matched to the idea's terms; the sector totals give the context.
8
grants and programs matching the idea
243
startup-relevant grants in AI infra and compute
$339M
awarded in the sector, tracked
8
opportunities open now in the sector
NIH / NCI · SBIR phase II · $946K · posted 2026-09-18
- SBIR Phase II: Advanced Manufacturing for Aerogels for Battery Safety Applicationsawardhigh relevance
National Science Foundation · SBIR Phase II · $1M · posted 2026-08-04
- Provide a Set-It-And-Forget-it Copaxone Patch for Hourly Dosing of Medication to Combat Multiple Sclerosis.awardhigh relevance
NIH / NIAID · SBIR phase I · $321K · posted 2026-07-24
- CAREER: Understanding the dynamics and predictability of land-to-aquatic nitrogen loading under climate extremes by combining deep learning with process-based modelingawardmedium relevance
National Science Foundation · Hydrologic Sciences · $610K · posted 2026-09-22
- Collaborative Research: VINES: Track 2: AgSlicing: Predictable RAN and Spectrum Slicing for Precision Agricultureawardmedium relevance
National Science Foundation · TIP-CHIPS KTA-6 Communications · $425K · posted 2026-09-11
- Collaborative Research: VINES: Track 2: AgSlicing: Predictable RAN and Spectrum Slicing for Precision Agricultureawardmedium relevance
National Science Foundation · TIP-CHIPS KTA-6 Communications · $5M · posted 2026-09-11
National Science Foundation · TIP-CHIPS KTA-2 Semi-HPC · $6M · posted 2026-08-18
- Excellence in Research: Harnessing Data Science to Quantitatively Predict the Partitioning Behavior of Per and Polyfluoroalkyl Substances (PFAS)awardmedium relevance
National Science Foundation · HBCU-EiR - HBCU-Excellence in · $675K · posted 2026-08-18
Market signal
What the radar sees in AI infra and compute: new companies by cohort year, the forming YC batch, and outcomes since the February snapshot.
AI infra and compute · 11 → 34 → 59 → 58 → 72 new companies 2022 → 2026 · 95% aliveYC F26 live: 6 in this cluster, 5% of the batch (was 8% in S26)Since February, of 116 YC companies here: 3 acquired, 3 shut down, 26 rewrote their pitch
Design attributes
The card is one cell of a designed set: every axis below was chosen before the text was written, and the text had to realize it.
- Buyer
- Government and public sector
- Business model
- Marketplace
- Path to 100x
- Network effects, winner takes most
- Market size
- $10-100B market
- Capital intensity
- Capital-medium (ops, field teams)
- Speed to revenue
- Revenue in 1-3 years
- Technical depth
- Integrations, no-code
- Go-to-market
- Founder-led sales
- Moat
- Network effects
- Geography
- Global from day one
- Regulation
- Some regulation
- Vibe
- Hot space
Listed under
An idea sits in its own sector and in any sector its text clearly touches.
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