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 $0.19/hr on demand, about 53% below the A100 ($0.40/hr).
| Metric | A100 | RTX 4090 |
|---|---|---|
| Cheapest on-demand (per GPU-hour) | $0.40/hron-demand | $0.19/hron-demand |
| Cheapest spot / interruptible (per GPU-hour) | $0.29/hrspot / interruptible | $0.16/hrspot / interruptible |
| GPU memory | 40 GB | 24 GB |
| Cloud providers | 13 | 11 |
| Configs tracked | 106 | 130 |
| 30-day reliability | 2/9 held ≥80% | 2/11 held ≥80% |
When to pick which
- Pick the RTX 4090 to minimise hourly cost — its on-demand floor ($0.19/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 $0.40/hr and the RTX 4090 at $0.19/hr on demand. The RTX 4090 is currently cheaper, with an on-demand floor of $0.19/hr — about 53% 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 11 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, 2/9 held ≥80% of scored providers kept the A100 in stock, versus 2/11 held ≥80% for the RTX 4090. GPU Finder polls provider stock hourly and scores reliability from that history.