Simple, step-based pricingStart 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
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
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
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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.