A100 vs RTX 4090: Cloud Pricing & Availability (2026)
Live, side-by-side comparison of the A100 and RTX 4090 across the cloud providers GPU Finder tracks — on-demand and spot price floors, how many providers carry each, and 30-day availability reliability. Prices refresh daily, availability hourly.
Right now: the RTX 4090 is the cheaper rental — from $0.11/hr on demand, about 60% below the A100 ($0.27/hr).
| Metric | A100 | RTX 4090 |
|---|---|---|
| Cheapest on-demand (per GPU-hour) | $0.27/hron-demand | $0.11/hron-demand |
| Cheapest spot / interruptible (per GPU-hour) | $0.13/hrspot / interruptible | $0.04/hrspot / interruptible |
| GPU memory | 40 GB | 24 GB |
| Cloud providers | 13 | 7 |
| Configs tracked | 133 | 240 |
| 30-day reliability | 3/6 held ≥80% | 3/7 held ≥80% |
When to pick which
- Pick the RTX 4090 to minimise hourly cost — its on-demand floor ($0.11/hr) is the lower of the two right now.
- Pick the A100 for larger models or bigger batch sizes — its 40 GB of VRAM fits more without sharding across GPUs.
- The A100 is listed by more providers (13), so it's usually easier to find in stock.
- Over the last 30 days the A100 held ≥80% availability at a larger share of providers — the steadier pick if you need capacity on demand.
FAQ
- Is the A100 or RTX 4090 cheaper to rent in the cloud?
- Across the providers GPU Finder tracks, the A100 starts at $0.27/hr and the RTX 4090 at $0.11/hr on demand. The RTX 4090 is currently cheaper, with an on-demand floor of $0.11/hr — about 60% below the A100. Prices refresh daily and availability hourly, so check the live tables before you commit.
- Which has more cloud providers, the A100 or RTX 4090?
- The A100 is offered by 13 providers and the RTX 4090 by 7 providers in our catalog. More providers usually means more regions and an easier time finding capacity in stock.
- How much GPU memory do the A100 and RTX 4090 have?
- The A100 carries 40 GB of VRAM and the RTX 4090 24 GB. VRAM is the main constraint on the model size and batch size you can run on a single GPU.
- Which is more reliably available, the A100 or RTX 4090?
- Over the last 30 days, 3/6 held ≥80% of scored providers kept the A100 in stock, versus 3/7 held ≥80% for the RTX 4090. GPU Finder polls provider stock hourly and scores reliability from that history.