---
specification: API Commons Rate Limits
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/RateLimits
provider: CodeSandbox
providerId: codesandbox
created: '2026-06-12'
modified: '2026-06-12'
reconciled: true
tags:
  - Rate Limiting
  - Virtual Machines
  - API Throttling
description: >-
  CodeSandbox enforces concurrent VM limits per plan tier and bills VM runtime
  by the minute; exceeding credit allocations transitions to on-demand billing
  at $0.01486 per credit rather than hard blocking.
sources:
  - https://codesandbox.io/pricing
  - https://codesandbox.io/docs/sdk/pricing
headers:
  retryAfter: Retry-After
responseCodes:
  throttled: 429
limits:
  - name: Concurrent VMs - Free Plan
    scope: org
    metric: concurrent_vms
    limit: 10
    timeFrame: usage
  - name: Concurrent VMs - Build Plan
    scope: org
    metric: concurrent_vms
    limit: 10
    timeFrame: usage
  - name: Concurrent VMs - Scale Plan
    scope: org
    metric: concurrent_vms
    limit: 250
    timeFrame: usage
  - name: Monthly VM Credits - Free Plan
    scope: org
    metric: credits_per_month
    limit: 400
    timeFrame: month
  - name: Monthly VM Hours - Build Plan
    scope: org
    metric: hours_per_month
    limit: 40
    timeFrame: month
  - name: Monthly VM Hours - Scale Plan
    scope: org
    metric: hours_per_month
    limit: 100
    timeFrame: month
  - name: VM Billing Minimum Unit
    scope: user
    metric: minutes
    limit: 1
    timeFrame: usage