READ How green compute reduces AI emissions →

Train your AI
without frying
the planet.

CapaCloud is a planet-positive neocloud for pay-per-use GPU rentals. Rent or monetize GPU power at one fair, published price. Sign in with your email, pay by card through Stripe, and get full system control. We're a climate-friendly, carbon-neutral cloud alternative to AWS.

No wallets or tokens Pay per use 99% less carbon per compute
  capacloud://rentals live
llama-finetune-8b4× RTX 4090 · root via SSH
epoch 2/5loss 1.284$6.12
blender-render-ep048× RTX 5090
frame 710/1000cooling room air$18.40
0new DCs built
4.81tCO₂e
99%less carbon footprint per compute
1published price per GPU, the same for everyone
Rootfull system control over SSH
<60sfrom email sign-in to a running GPU
The platform

CapaCloud Neocloud Platform

CapaCloud is a GPU rental platform that connects people who need compute with idle GPUs that already exist. Instead of building new data centres, we put that hardware to work. You get pay-per-use rentals at a fair price set by CapaCloud, a normal email login and card payments through Stripe. It's a sustainable, carbon-neutral cloud alternative for AI, rendering and high-performance workloads.

Learn more about neocloud computing
Why CapaCloud

Fair, simple
neocloud infrastructure.

Built on sustainable cloud computing principles. CapaCloud sets one transparent rate card, so there are no bidding wars, token swings or crypto wallets. You get compute that's easy to buy and easy on the planet.

How we compare with AWS →

Pay-Per-Use GPU Rental

Use GPUs on demand, only when you need them. Usage is billed per second from prepaid credits, which you buy by card through Stripe. How pay-as-you-go pricing works.

Privacy-First Compute

We store only your email and billing details. Your workload data is deleted when your rental ends. See more.

Full System Control

Get root access to install drivers, frameworks and tools for AI training, rendering, simulation or algorithmic trading.

NVIDIA-Powered Compute

Use high-performance NVIDIA GPUs for AI training, rendering and compute-heavy workloads, without owning or maintaining any infrastructure.

CapaCloud, before
  • Blockchain marketplace with no central pricing authority
  • Solana wallet needed to sign in
  • Payments in USDT through smart contracts
  • Prices that change with every listing
CapaCloud, now
  • One published USD rate card, set and guaranteed by CapaCloud
  • Passwordless email login, with SSO for teams
  • Card, Apple Pay and Google Pay through Stripe, with automatic invoices
  • The same planet-positive network with 99% less carbon per compute
How it works

Get started with GPU compute
in minutes.

STEP 01

Sign in with email

Enter your email and the 6-digit code we send you. You don't need a password or a crypto wallet.

$ capa login you@company.com
STEP 02

Rent a GPU

Browse available GPUs and their published prices, and pick the right pay-per-use rental for your workload.

$ capa gpus list --free
STEP 03

Deploy instantly

Connect securely over SSH with full root access. Install any drivers, frameworks or tools you need.

$ capa ssh rtx4090x4
STEP 04

Run your workload

Train models, render scenes or run simulations, and get a cost and carbon receipt when the job finishes.

✓ done · $6.12 · −98% CO₂
Pricing

One rate card.
Set by us. Same for everyone.

CapaCloud's pricing desk publishes one rate for each GPU class. Price cuts reach every customer right away. Price increases come with 30 days' notice.

Rate card v2026.4 · locked until 31 Dec 2026
GPUVRAMBest forPrice / GPU-hrAvailability

Billed per second. No egress fees. Prices in USD, excluding VAT. Not sure which GPU to pick? Read A100 vs H100 for LLM training or GPU requirements for LLM fine-tuning.

Secure checkout by Stripe. Pay by card, Apple Pay or Google Pay.
Use cases

Powerful use cases.

High-performance, pay-per-use GPU compute for AI, rendering and simulation workloads.

AI/ML Training & Inference

Train deep learning models, run inference and try the latest AI frameworks. With root access you can install PyTorch, TensorFlow or any ML library you need.

  • Deep learning model training
  • Real-time inference pipelines
  • LLM fine-tuning and deployment

Rendering, Simulation & Algorithmic Trading

Speed up 3D rendering, run complex simulations and transcode video at scale, all without buying hardware up front.

  • 3D rendering and animation
  • Scientific simulations
  • High-speed video transcoding

Research & Scientific Computing

Run climate models, genomics, physics and other research workloads on affordable GPUs, with a carbon receipt for every run.

  • Distributed multi-node training
  • Climate and earth-science models
  • Bioinformatics and molecular dynamics
Sustainability

Climate-friendly
neocloud infrastructure.

Planet positive from day one. 99% less carbon footprint per compute.

Traditional cloud GPU providers rely on energy-intensive data centres. CapaCloud uses GPUs that already exist in a distributed network, which cuts the energy spent on cooling and infrastructure. That makes CapaCloud a sustainable cloud GPU platform and a carbon-neutral cloud alternative to AWS for AI and compute workloads.

01 / REUSE

No new data centres

We use GPUs that already exist, so no new concrete, chillers or embodied carbon go into building another hyperscale site.

02 / COOLING

Cooled by room air

Distributed GPUs are cooled by the air in the room they sit in. There's no industrial cooling plant using energy around the clock.

03 / UTILISATION

Idle GPUs put to work

Idle hardware becomes useful compute, so more work gets done with the silicon that's already been made.

04 / TRANSPARENCY

Carbon receipt per job

Each rental reports its estimated energy use and emissions, so ESG reporting takes minutes instead of weeks.

Impact calculator

See what your next run
won't emit.

Estimate the cost and carbon of a GPU job on CapaCloud, compared with the same job in a traditional cloud data centre.

CO₂ avoided
0 kg
$0
0 kWh
0 kg
0 kg
That's like…

These are estimates. The traditional cloud figure assumes a PUE of 1.5, a 470 gCO₂/kWh grid and the data centre's embodied carbon. The CapaCloud figure uses our 99%-less-per-compute benchmark.

For GPU owners

Monetize your idle GPU.

Join the CapaCloud network and earn from hardware you already own. You get a fixed hourly payout for each GPU class, set by CapaCloud, so you don't need to haggle or watch token prices. Payouts go to your bank account through Stripe.

Windows setup guide
RTX 5090 · 12 h/day$0
RTX 4090 · 12 h/day$0
RTX 3090 · 12 h/day$0

Example monthly payouts at the current provider rate (70% of the published price). Actual earnings depend on how much your GPU is used.

Donate for CapaCloud Moonshots

CapaCloud Moonshots are non-profit projects for humanity. Donations pay for the GPU compute these projects need, and you can always give anonymously.

View Moonshots
FAQs

Questions, answered.

Big models.
Small footprint.

Sign in with your email, add credits through Stripe and start computing in minutes.