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
1
similar startups, last 2 years (12 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
$1,800 · 6 weeks · 30 prospects
For under $2,000 and six weeks, prove that US university HPC centers are legally able and willing to list idle summer GPU hours, and that newly funded PIs will put money down to reserve them.
1Focus group: who and where
Two people. Supply: the director of research computing at a US university HPC center with 100+ GPUs whose allocation committee leaves summer cycles unused. Demand: a PI whose NSF CISE or DOE Office of Science AI award started in the last 6 months and whose home institution has no GPU cluster of its own.
where to find 30 · Supply: the member list of CASC (Coalition for Academic Scientific Computation, 90+ US institutions), the CaRCC people-network Slack, and LinkedIn Sales Navigator filtered on title 'Director of Research Computing' at US universities. Demand: NSF Award Search filtered to CISE AI awards funded since March 2026, plus PIs posting in r/HPC about waiting on ACCESS allocations. PEARC attendee institutions are the warm list for both sides.
2Sell first, build later
A reserved block of 1,000 GPU-hours on a named US university cluster, delivered within 30 days of reservation, with account setup, scheduler access and export-control screening handled by Fallowgrid, sold before any platform exists.
the ask · $1,200 per 1,000 GPU-hour block ($1.20 per A100-hour), of which Fallowgrid keeps 15%
a real yes · A real yes is a paid Stripe reservation from a PI's discretionary or grant account, or a university purchase order in procurement with a PO number. Not a yes: a director saying the idea is great, a PI saying they would use it, or an MOU with no dated block attached.
3Small experiments
The first one attacks the riskiest assumption; each ends with a number that says whether to run the next.
1. Permission audit calls with center directors
$100 · 14 days
Book 12 calls with CASC-member research computing directors. Script one question hard: walk me through what your general counsel and your funding terms say about selling unused cycles to an outside institution, and name a center that has done it. Log each center as 'can sell', 'can sell via existing recharge or service-center rate', or 'barred'.
keep going if · 6 of 12 directors confirm a legal path (usually an existing service-center rate) and 3 agree in writing to list a specific summer block if a buyer is found
2. Buyer landing page with priced blocks
$400 · 10 days
One page: 'Reserve 1,000 A100-hours from a US university center, $1.20 per GPU-hour, delivery within 30 days, export screening handled.' Drive 100 newly funded PIs to it via direct email pulled from NSF Award Search abstracts. The reserve button opens a Stripe Payment Link.
keep going if · 10 of 100 emailed PIs click through to the payment page and 4 start checkout
3. Concierge clearing of one block
$300 · 21 days
By hand, match one center's committed summer block to 2 to 4 PIs: founders handle the accounts, the scheduler handoff and the paperwork over email and a shared spreadsheet, with the center invoicing through its normal service-center rate and Fallowgrid taking no cut yet. The product is a PDF term sheet and a Calendly link, nothing more.
keep going if · 1 block of at least 500 GPU-hours actually runs jobs for an outside PI and both sides say they would repeat it next quarter
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.
$250
per prospect, refundable
how · Demand side: a $250 refundable reservation via a Stripe Payment Link, payable by lab p-card or discretionary funds, applied against the block price; where the PI's institution cannot pay by card, a purchase order submitted to procurement counts instead. Supply side pays nothing but signs a one-page listing letter naming the block, the dates and the rate. set up: Stripe Payment Links ↗
what it reserves · First claim on a named summer block at a named center, at the $1.20 rate, with a 30-day delivery date
refund · Refunded in full within 5 business days if the block is not delivered on the promised date or the PI cancels before access is provisioned.
target · 5 paid reservations or submitted POs from 25 PI conversations, plus 3 signed listing letters from centers, within 40 days
Go: build it if
3 centers with a confirmed legal path and signed listing letters, 5 buyer deposits or POs totaling at least $1,250, and one block actually cleared end to end.
Kill: stop if
Fewer than 3 of 12 directors can name a legal path to selling hours, or fewer than 2 deposits after 25 buyer conversations; the stated risk that public centers cannot sell is then confirmed and the exchange has no supply.
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.
83
Idea Score, 0-100 · raw 50.8 x 1.64
Warm
competition: more crowded than 20% of ideas · headwind x0.90
+2.3
government priorities, secondary (8 matching grants)
Trend
51
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 sector68
- 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): 12 all-time, 1 from the last two years. Same matching as Idea Check.
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Modern, on-demand lawn care service. Get a quote in two minutes.
Payments for Marketplaces
BitGo is a leader in institutional custody, staking, and trading of digital assets.
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
225
startup-relevant grants in AI infra and compute
$271M
awarded in the sector, tracked
8
opportunities open now in the sector
- 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
- 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
National Science Foundation · TIP-CHIPS KTA-2 Semi-HPC · $6M · posted 2026-08-18
- Collaborative Research: VINES: Track 1: ARMANI - AI-native RAN MANageability and Intelligence for Next Generation Networksawardmedium relevance
National Science Foundation · Use-Inspired NextG · $667K · posted 2026-07-29
- CSR: A New Frontier in Acceleration: Unlocking Irregular Computing for Multiple Application Domains with Ray Tracing Hardwareawardmedium relevance
National Science Foundation · CSR-Computer Systems Research · $765K · posted 2026-07-29
- Collaborative Research: VINES: Track 1: ARMANI - AI-native RAN MANageability and Intelligence for Next Generation Networksawardmedium relevance
National Science Foundation · Use-Inspired NextG · $333K · posted 2026-07-29
- EcoWell: Smart Incubation Technology for Next-Generation Environmental Science Labsawardmedium relevance
NIH / NIEHS · SBIR phase II · $1M · posted 2026-06-22
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 · 10 → 33 → 57 → 61 → 52 new companies 2022 → 2026 · 98% aliveYC S26: 18 in this cluster, 8% of the batch (was 4% in X26) (F26 is still forming: 21 listed)Since February, of 117 YC companies here: 3 acquired, 2 shut down, 25 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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