# High-concurrency devboxes: prices at 2 vCPU / 4 GB (Nov 2026)

At least 100 running at the same time on the terms priced. 4 providers: one busy 1-hour session at 2 vCPU / 4 GB costs ≥ $0.017 (InstaBox) 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 | InstaBox | ≥ $0.017 [1] | ≥ $0.017 | ≥ $149.60 | Plan from $20/mo | 100 | 10/min, then refused | 2 vCPU / 4 GB | Running time | none |
| 2 | boat | ≥ $0.018 [2] | ≥ $0.018 | ≥ $158.40 | Plan from $20/mo | 100 | 12/min · 60/h · 200/day, then from $0.03 each | small (2 vCPU / 4 GB) | Running time | none |
| 3 | Upstash Box | ≥ $0.1 [3] | ≥ $0.01 | ≥ $880.00 | Pay as you go | 1,000 | ? | Small (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 |

Not published, so not listed here: boxd, Fly.io Sprites, GitHub Codespaces, Islo, Runloop.

## 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/)
- [Start limits published](https://roost.guide/devboxes/published-start-limits/)
- [No session limit](https://roost.guide/devboxes/no-session-limit/)
- [Active-CPU billing](https://roost.guide/devboxes/active-cpu-billing/)
- [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://instabox.sh/docs/pricing.md (checked 31 Oct 2026)
[2] https://docs.boat.dev/pricing.md (checked 31 Oct 2026)
[3] https://upstash.com/pricing/box (checked 31 Oct 2026)
[4] https://www.tensorlake.ai/pricing (checked 31 Oct 2026)