# Active-CPU-billed devboxes: prices at 2 vCPU / 4 GB (Nov 2026)

Only CPU in use is billed, so idle time costs less. 4 providers: one busy 1-hour session at 2 vCPU / 4 GB costs ≥ $0.1 (Upstash Box) to ≥ $0.2 (Tensorlake).

1 h busy: all CPU billed. 1 h at 10% CPU: lower only where idle CPU isn't billed. Fleet month: 50 × 8 h × 22 days, busy, on the lowest plan that runs 50 at once (its fee, less the usage it includes). At once and Starts are on the terms priced. Fixed sizes use the smallest size that fits. "≥" means a billing term is not published. Method: https://roost.guide/methodology/

| # | Provider | 1 h busy | 1 h at 10% CPU | Fleet month | Pay | At once | Starts | Size priced | Billed on | Caveats |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Upstash Box | ≥ $0.1 [1] | ≥ $0.01 | ≥ $880.00 | Pay as you go | 1,000 | ? | Small (2 vCPU / 4 GB) | Active CPU | Active-CPU billing |
| 2 | boxd | $0.15 [2] | $0.0654 | $1,320 | Prepaid credit | ? | ? | 2 vCPU / 4 GB | Active CPU | Active-CPU billing |
| 3 | Fly.io Sprites | ≥ $0.164 [3] | ≥ $0.0952 | ≥ $1,448 | Pay as you go | ? | 10/min, then refused | 2 vCPU / 4 GB | Active CPU | Active-CPU billing |
| 4 | Tensorlake | ≥ $0.2 [4] | ≥ $0.074 | ≥ $1,760 | Prepaid credit | 100 | ? | 2 vCPU / 4 GB | Active CPU | Active-CPU billing |

## Other pages

- [2 vCPU / 4 GB](https://roost.guide/devboxes/)
- [4 vCPU / 8 GB](https://roost.guide/devboxes/4-vcpu-8-gb/)
- [8 vCPU / 16 GB](https://roost.guide/devboxes/8-vcpu-16-gb/)
- [Agent sandboxes](https://roost.guide/agent-sandboxes/)

## Filters

- [All](https://roost.guide/devboxes/)
- [Pay as you go](https://roost.guide/devboxes/pay-as-you-go/)
- [Free tier](https://roost.guide/devboxes/free-tier/)
- [100+ at once](https://roost.guide/devboxes/high-concurrency/)
- [Start limits published](https://roost.guide/devboxes/published-start-limits/)
- [No session limit](https://roost.guide/devboxes/no-session-limit/)
- [Desktop](https://roost.guide/devboxes/desktop/)
- [Docker inside](https://roost.guide/devboxes/docker/)
- [SSH](https://roost.guide/devboxes/ssh/)
- [Snapshots](https://roost.guide/devboxes/snapshots/)
- [Fork](https://roost.guide/devboxes/fork/)
- [MicroVM](https://roost.guide/devboxes/microvm/)
- [Your cloud](https://roost.guide/devboxes/byoc/)
- [SOC 2](https://roost.guide/devboxes/soc2/)
- [Europe](https://roost.guide/devboxes/europe/)

## Sources

[1] https://upstash.com/pricing/box (checked 31 Oct 2026)
[2] https://boxd.sh/pricing/ (checked 1 Nov 2026)
[3] https://fly.io/sprites (checked 31 Oct 2026)
[4] https://www.tensorlake.ai/pricing (checked 31 Oct 2026)