zCLOUD as a Together AI Alternative for H100 Clusters: Capacity Model, Network, Region Control and Cost to Completion
zCLOUD, Zettabyte's GPU cloud, works as a Together AI alternative for NVIDIA H100 GPU jobs where the buyer's first question is price. It buys GPU time across 40+ providers and sets each price when it assigns the GPUs.
Together AI GPU Clusters, the company's GPU rental product, lists $3.99 per GPU-hour on its price page for an H100 paid by the hour. zCLOUD starts at $3.75 for the same option.
Together AI publishes its cities, which helps a job that has to run in a named country. zCLOUD handles location requests through its sales team.
Together AI and zCLOUD H100 Prices at a Glance
Both providers sell H100 time by the hour without a commitment, or on a reserved term, where the buyer commits to a set period for a lower hourly rate. The table lines up each option with its published H100 figure.
| H100 option | Together AI GPU Clusters | zCLOUD |
|---|---|---|
| Paid by the hour | $3.99 per GPU per hour | From $3.75 per GPU per hour |
| Reserved term | From $3.19 per GPU per hour | From $2.79 per GPU per hour |
| Reserved commitment | Up to six months, paid upfront | Rate locked for the term |
| How the rate is set | Fixed on the price page | Set at purchase from live supply |
| Cluster size on the price page | 8 to 256 GPUs | Hundreds of GPUs by the hour |
| Location | 25+ named cities | Requested through sales |
Together AI GPU Clusters: Fixed Rates and Named Cities
Together AI sells H100 clusters online in two ways:
- On-demand: $3.99 per GPU per hour, billed hourly, with the option to shut the cluster down at the end of a job. These clusters top out at 256 GPUs, and capacity depends on what's free at the time.
- Reserved: from $3.19 per GPU per hour for a term of up to six months, paid upfront. The capacity stays held for the term, so a long training run won't wait for free GPUs.
Together AI's GPU Clusters page lists 25+ cities for its clusters. A buyer with a data residency rule, a law that keeps data inside a country, can confirm the location before signing a contract.
Together AI also publishes the power behind its clusters, which tells a buyer how far it can grow in each region. Its US portfolio holds 2GW+, with 600MW in the near term, and Europe adds 150MW+ in France, the Netherlands, Sweden and Romania.
zCLOUD: A Together AI Alternative Priced at Purchase
zCLOUD buys GPU time across 40+ providers through a bid-and-ask market, where sellers post prices and zCLOUD takes the best available one at the moment of purchase. Its H100 starting rates are $3.75 per GPU per hour by the hour and $2.79 on a reserved term.
The final rate gets set when zCLOUD assigns the GPUs, and it can come in above the starting rate. A reserved cluster locks that rate for its term and targets deployment within six hours of confirmed requirements.
Network and Region Control: Together AI vs zCLOUD
Together AI links its GPUs with InfiniBand, a dedicated network that keeps a training job in sync across servers. zCLOUD's product pages don't name the network inside its clusters, so ask for it in the written quote.
Together AI lets a buyer pick a city from its published list. zCLOUD routes a fixed location through sales or a private cloud, a custom cluster scoped around the buyer's region and security review.
Cost to Completion on Together AI and zCLOUD: A Worked Example
Cost to completion counts what it takes to finish a job, including compute, storage, data transfer and support. This example prices compute for 256 H100 GPUs over 30 days, the largest H100 cluster on Together AI's price page, which comes to 184,320 GPU-hours.
| H100 option | Together AI | zCLOUD at its starting rate | zCLOUD difference |
|---|---|---|---|
| Paid by the hour | $735,437 | $691,200 | 6.0% lower |
| Reserved term | $587,981 | $514,253 | 12.5% lower |
On this job, zCLOUD's starting rates save about $44,200 by the hour and about $73,700 on a reserved term. Check three things before using these numbers:
- Starting rates: zCLOUD's figures use its starting rates, and the assigned rate can come in higher in a tight market. Together AI's reserved figure is also a starting rate.
- Compute charges: the figures leave out storage, data transfer and support, so the bill for finishing the job runs higher on both sides.
- Moving prices: one-year H100 rental contracts rose about 40% in five months, from $1.70 to $2.35 per GPU per hour between October 2025 and March 2026, according to our GPU rental pricing analysis. A quote can change between planning and purchase.
Choosing Between Together AI and zCLOUD by Workload
Buyers comparing Together AI alternatives can match each H100 job to a provider:
- Price-first jobs: zCLOUD fits, because its starting rates run below Together AI's on both the hourly and the reserved option. The saving depends on the rate zCLOUD assigns at purchase.
- Jobs that need a set city: Together AI fits, because it publishes its cities before purchase. Moving such a job to zCLOUD means waiting for sales to confirm the location in writing.
- Jobs that need a known hourly price: Together AI fits, because its hourly H100 rate of $3.99 stays fixed on its price page.
zCLOUD is Zettabyte's own product, and this comparison holds it to the same checks as Together AI. Get an H100 quote for a specific job size from the zCLOUD product page.