Proxon vs Sibyl (2026)
A side-by-side comparison of Proxon and Sibyl on pricing, features, and fit, so you can decide which is right for you.
Quick answer
Proxon and Sibyl are both strong choices, but they fit different needs. Choose Proxon if you mainly need auditing all ai applications in use across a large enterprise to identify shadow it risks — its edge is provides comprehensive visibility into both approved and unauthorized ai tool usage. Choose Sibyl if you need restoring project context automatically when starting a new ai-assisted coding session — its edge is completely free and open-source with no subscription or usage fees. Proxon starts at On request; Sibyl starts at Free.
Features compared
- Automated discovery and inventory of all AI tools across an organization, including shadow AI
- Ownership assignment and policy binding per AI system
- Real-time spend tracking and budget attribution for each AI tool
- Centralized compliance and governance dashboard for IT and security teams
- Persistent knowledge graph stores project context across coding sessions
- Cross-agent memory compatibility with Claude Code, Codex, Cursor, Aider, and Cline
- Self-hosted deployment keeps all data on your own infrastructure
- Shell-based integration allows any supported agent to query memory at session start
Pros & cons
- Provides comprehensive visibility into both approved and unauthorized AI tool usage
- Directly links AI tools to owners, policies, and costs for clear accountability
- Designed specifically for enterprise security and IT governance workflows
- Pricing is not publicly available, making it difficult to budget without a sales conversation
- May require significant onboarding effort to fully integrate with existing IT infrastructure
- Completely free and open-source with no subscription or usage fees
- Self-hosted design ensures full data privacy and ownership
- Compatible with multiple popular AI coding agents out of the box
- Requires self-hosting setup which may be a barrier for non-technical users
- Limited to environments where shell access is available for agent integration
The verdict
Choose Proxon if
you mainly need to auditing all ai applications in use across a large enterprise to identify shadow it risks. Its edge: provides comprehensive visibility into both approved and unauthorized ai tool usage.
Choose Sibyl if
you mainly need to restoring project context automatically when starting a new ai-assisted coding session. Its edge: completely free and open-source with no subscription or usage fees.
Frequently asked questions
Is Proxon better than Sibyl?
Neither is universally better. Proxon is stronger for auditing all ai applications in use across a large enterprise to identify shadow it risks, with an edge in provides comprehensive visibility into both approved and unauthorized ai tool usage. Sibyl is stronger for restoring project context automatically when starting a new ai-assisted coding session, with an edge in completely free and open-source with no subscription or usage fees. Pick based on your main task.
Which is cheaper, Proxon or Sibyl?
Proxon starts at On request and Sibyl starts at Free. Free tier: Proxon — No public free tier; Sibyl — Fully free and open-source, self-hosted with no usage limits.
What is Proxon best for?
Proxon is best for auditing all ai applications in use across a large enterprise to identify shadow it risks, enforcing ai usage policies and mapping each tool to a responsible owner, tracking and controlling ai-related software spend across business units.
What is Sibyl best for?
Sibyl is best for restoring project context automatically when starting a new ai-assisted coding session, maintaining consistent coding conventions and architectural decisions across multiple agents, managing long-lived codebases where accumulated project knowledge improves ai-assisted development.
Do Proxon and Sibyl have free plans?
Proxon: No public free tier. Sibyl: Fully free and open-source, self-hosted with no usage limits. Check each tool's pricing page for current limits, as plans change.