Simple, step-based pricing

Start free. Pay for the monitoring capacity you use.

Every plan uses the same billing configuration as the product. The free trial pauses at 500 steps; paid plans add capacity and concurrency.

Free trial

Everything in the trial includes 500 steps and 2 concurrent agents.

$0for 500 steps

Start free and see how Sentinel4 behaves on real use cases before you pay.

  • 500 free steps
  • 2 concurrent agents
  • Smart alert evaluation included
  • When you hit 500 steps, alerts pause until you upgrade
Upgrade

Pay-as-you-go

Best for low-volume or unpredictable workflows

$0.02/step

Only pay for the steps you use. Great when your alert volume changes week to week.

  • $0.02/step, no minimum, no commitment
  • 2 concurrent agents (2 parallel workflows)
  • Remote browser at $0/hour
  • Residential proxy at $0/GB
  • All LLM costs included
  • Anti-bot protection included
  • 30-day run history
  • Email support
Start free

Starter

Best for developers running daily workflows

Most popular
$20.00/mo

For teams that want predictable monthly capacity and faster parallel execution.

  • Everything in Free Trial (500 steps + 2 concurrent agents) and more
  • 1,650 steps/month
  • 10 concurrent agents (5x throughput)
  • Remote browser at $0/hour
  • Residential proxy at $0/GB
  • All LLM inference costs included
  • Anti-bot protection, auto-configured per run
  • 30-day run history with full agent observability and screenshots
  • Priority email support
  • API and MCP integration
Start free

Past 1,650 steps: $0.018/step. Workflows keep running, no hard stops.

Pro

Best for development teams who have high-volume workflows

$195.00/mo

More included steps, much higher concurrency, and longer observability windows.

  • Everything in Starter and more
  • 16,500 steps/month
  • 50 concurrent agents (25x throughput)
  • Remote browser at $0/hour
  • Residential proxy at $0/GB
  • All LLM inference costs included
  • Anti-bot protection, auto-configured per run
  • 180-day run history with full agent observability and screenshots
  • Priority email + Slack/Discord community access
  • API and MCP integration
Start free

Past 16,500 steps: $0.016/step. Workflows keep running, no hard stops.

Enterprise

Best for large-scale deployments with compliance needs

Custompricing

Custom deployment, security, observability, and contractual support.

  • Custom workflows
  • Custom agent step volume
  • Custom concurrent agents
  • Custom auditability
  • Advanced security & compliance (ISO compliant)
  • Dedicated support engineer
  • Custom SLA & contracts
  • On-premise deployment option
Contact us

What is a step?

A step is a unit of agent work used while visiting sources, gathering evidence, and evaluating a change. The exact steps needed depend on the source and monitoring rule. Usage is visible in the application.

500-step free trial

Try a real monitoring rule before choosing a paid plan

Describe the change that matters. Sentinel4 will monitor public sources and preserve the evidence behind every alert.

Monitor one competitor free