Ambral is open-core: the cost tracking engine, dashboard, API, and alerting system are all MIT-licensed. You can self-host it on a $5/month VPS and track every dollar your agents spend — forever, for free.
So why would anyone pay for the hosted version? Because running infrastructure isn't free, even when the software is.
Community (Free)
The free Community plan includes everything a solo developer or small team needs:
- 100,000 cost events per month
- 3 agents and 1 workspace
- 30-day data retention
- Real-time dashboards
- Budget alerts
- REST API for ingestion
- MySQL database
Deploy it on any Node.js host: a VPS, your Kubernetes cluster, a Raspberry Pi. It's a standard Next.js app with Prisma ORM — nothing exotic.
When to Upgrade to Pro ($49/month)
The hosted Pro tier makes sense when:
- You need team access — Pro supports 10 team members with role-based access
- You're past the Community limits — Pro tracks unlimited agents and projects
- You need higher event volume — 2M events/month vs 100K
- You want alert integrations — Slack, Discord, email, or webhook alerts
- You don't want to maintain infrastructure — We handle uptime, backups, and updates
Team ($149/month)
For teams running multiple production agents, Team adds 10M events/month, 2-year retention, unlimited team members, advanced RBAC and audit logs, provider/model cost comparison, and cost optimization recommendations.
Enterprise
For organizations running hundreds of agents across multiple teams: SSO/SAML, RBAC, custom SLAs, on-premise deployment support, and data export to Snowflake or BigQuery for deep analytics.
The Philosophy
We believe cost visibility should be free. The core problem — "where is my money going?" — shouldn't be locked behind a paywall. We charge for scale, collaboration, and convenience, not for the basic insight that your research agent is 10x more expensive than you thought.