GPU rental is a listing service.
It should be an exchange.

Right now, renting a GPU works like Craigslist. A provider sets a price. You take it or leave it. There's no way to know if you're overpaying. No way to lock in a rate for next week. No secondary market. No quality signal. You SSH in and hope for the best.

Meanwhile, compute is becoming the most important commodity in the world. CME is launching compute futures. DRW and Jump Trading are placing bets. Everyone agrees GPU-hours will be traded like oil — but nobody is building the physical exchange where actual machines change hands.

We are.

A gpubook contract represents one GPU-day of compute: a specific GPU class, a specific date, a specific reliability grade. Contracts trade on an order book. The price reflects what the market actually thinks compute is worth — not what a provider guessed when they listed their rig.

That's a 5090-standard-A order book. $/hr by date. Bid, ask, spread, volume. Today's contract is decaying — it's 6pm, there's 6 hours of compute left, and the price reflects that. May 20th is elevated because the market expects a demand spike. You can see all of this. Nobody can today.

Providers earn a reliability rating — like bond grades. AAA means you always deliver, specs always match, uptime is near-perfect. C means you're new and unproven. The market prices in the difference. A 5090-standard-AAA contract costs more than a 5090-standard-C. Nobody sets these prices. The market does.

This means a hobbyist with a 5090 in their basement can sell compute alongside a datacenter operator with a rack of H100s. They don't compete on brand. They compete on price and reliability. The rating is earned from telemetry — continuous, objective, automated. Both buyer and provider run agents. The numbers don't lie.

There are no disputes. No refunds. No customer support tickets. If a provider delivers garbage, their rating drops and their contracts trade at a discount. If they default entirely, their rating craters. The market enforces quality, not the platform.

Three types of people use the exchange.

Providers sell compute. They list contracts — "1x 5090-standard, May 20th, $0.35/hr" — and get paid when someone buys. Where they source the compute is their business. Own hardware. Rent from Vast. Whatever. The exchange doesn't know or care. It just measures what they deliver.

Consumers buy compute. One command, they have a GPU. They can sell back what they don't use. If they buy a day and finish in two hours, they list the remaining time and someone else picks it up. The machine stays running. SSH access rotates. No wasted compute.

Traders never touch a GPU. They buy contracts from slow-moving providers and sell to consumers when demand spikes. They forecast supply and demand and profit from being right. They're not parasites — they're the liquidity engine that makes the exchange work.

This is what it looks like:

Three commands. Browse the book. Buy at market. SSH in. The exchange handles matching, payment, and access. The provider's agent handles provisioning and telemetry. Everything else is the market.

Contracts settle in USDC. Payments are instant — provider gets paid when the contract sells, not when it expires. No escrow. No holdback. If you buy a contract and the provider defaults, you eat the loss and their rating tanks. You knew the rating when you bought. That's the deal.

This isn't a marketplace with extra steps. It's a different thing entirely. Marketplaces have listings. Exchanges have order books. Marketplaces set prices. Exchanges discover them. Marketplaces resolve disputes. Exchanges let the market enforce quality.

Compute will be the largest commodity market in the world. The financial instruments are being built — CME, Ornn, Architect Exchange. But those are cash-settled derivatives for institutions. Nobody takes delivery. We're building the physical exchange where the deliverable is an IP and SSH key.