Upstash Box

Name: Upstash Box
Brand: Upstash, Inc.

Container sandboxes with Claude Code, Codex, OpenCode or Cursor built in, billed per active CPU hour by size, with fixed monthly keep-alive boxes.

Operated by Upstash, Inc. upstash.com/box Status: active[1] Checked 31 Oct 2026

Agent sandboxes

Upstash Box (Pay as You Go)

Active-CPU billingOnly CPU in use is billed, so idle time costs less; the light-use column shows how much.
Max 10 runningAt most 10 sandboxes run at the same time.

Upstash Box (Pay as You Go): plans
Plan	Price	Includes
Free	Free[1]	10 concurrent boxes, 5 CPU hours a month, $1 LLM token budget a month, Small size
Pay as You Go	Free[1]	1,000 concurrent boxes (default quota), unlimited CPU hours, $100 LLM token budget a month
Fixed (keep-alive) Small	$8 per server /month[1]	Always-on 2 vCPU / 4 GB / 10 GB box; CPU and storage included
Fixed (keep-alive) Medium	$16 per server /month[1]	Always-on 4 vCPU / 8 GB box; CPU and storage included
Fixed (keep-alive) Large	$32 per server /month[1]	Always-on 8 vCPU / 16 GB / 30 GB box; CPU and storage included

Upstash Box (Pay as You Go): prices per size
Size	vCPU	RAM	Disk	Price	Per hour
Small	2	4 GB	10 GB	$0.1 /h[1]	$0.1
Medium	4	8 GB	20 GB	$0.2 /h[1]	$0.2
Large	8	16 GB	30 GB	$0.4 /h[1]	$0.4

Prices are per active CPU hour as published (Small $0.10, Medium $0.20, Large $0.40); the FAQ explains it as core-hours: 100% of 2 cores for an hour costs $0.20. Memory is free.
Keep-alive boxes never pause and cost a fixed $8 (Small), $16 (Medium) or $32 (Large) per box a month, covering CPU and storage; they need a paid plan.
Standard boxes auto-pause after 1 hour idle on Free and 6 hours on paid plans; paused boxes keep their files but not running processes.
Each box includes an Upstash-provided LLM token budget for the built-in agent ($1 a month on Free, $100 on Pay as You Go); bring-your-own-key works on all plans.
Custom Docker images are listed as coming soon; boxes start from Node.js, Python, Go, Ruby or Rust runtimes.
Medium disk is 20 GB in the Box docs and the pricing FAQ but 30 GB in the pricing size table.

Billing

Payment: Metered: usage billed afterwards[1]
Plan minimum: None[1]
Billing increment: unknown[1]Pricing page and docs give prices per active CPU hour without a metering increment
Minimum charge: unknown[1]Not on the pricing page or in the Box docs
Per-job fee: None[1]

Runtime

Billed on: Active CPU[1]
Isolation: Container[1]
Max session: unknown[1]No maximum lifetime for standard boxes (they auto-pause and resume); ephemeral boxes have a TTL of at most 259,200 s (3 days)
Concurrent sandboxes: 10[1]
Largest vCPU: 8[1]
Largest memory: 16 GB[1]

Lifecycle

Survives a stop: Disk[2]
Snapshots: Yes[2]
Pause and resume: Yes[2]
Fork: Disk copy[2]
Compute billed while stopped: No[2]
Auto-stop: after 1 h[2]
Start time (vendor claim): unknown[2]No start-time figure on the Box product page, pricing page or docs

Capabilities

GPU: No[2]
Desktop: Browser[2]
Coding agents installed: Claude Code, Codex, OpenCode, Cursor[2]
Agent prompt API: Yes[2]
SSH: Yes[2]
Docker inside: unknown[2]Docs say each box is a Docker container; running Docker inside a box is not documented
SDKs: Python, TypeScript, CLI, REST, MCP[2]
SOC 2: unknown[2]Upstash compliance page says Redis under Pro and Enterprise support plans is SOC 2 compliant; Box is not mentioned

Storage and network

Disk included: unknown[1]Pricing card lists Included Storage 10 GB for Small, while the same page says storage is billed separately at $0.10 per GB-month on Pay as You Go
Extra disk: $0.1 per GB-month[1]
Snapshot storage: $0.1 per GB-month[1]
Egress: unknown[1]Not on the Box pricing page or in the Box docs

Platform

Regions: us-east-1[1]
Your cloud (BYOC): unknown[1]No own-cloud or VPC option on the Box pricing page or in the Box docs
Self-host: unknown[1]No open-source Box runtime described on the Box pages or docs

Free allowance

Minutes a month: unknown[1]Free plan includes 5 active CPU hours a month (CPU core-hours, not box runtime minutes)
Credit a month: None[1]
One-time credit: None[1]

Raw data: JSON