Best Stigg alternatives for AI billing

Stigg is a subscription orchestration and entitlement management layer that sits above a payment processor. Teams look for alternatives when they need real-time per-usage billing rather than plan-based entitlements, want a self-contained billing loop without coordinating multiple systems, or need prepaid wallet architecture with per-request authorization.

These three alternatives are shortlisted because they address what entitlement orchestration cannot do on its own: money movement, usage-level billing, and direct revenue collection. Stigg sits above a billing system and manages plan access, feature gating, and pricing experiments. It does not collect payments. The alternatives here all handle billing at the infrastructure level, which is the most common reason teams evaluate moving off Stigg. Credyt is the pick for AI products that need real-time wallet authorization before inference runs. Rather than plan-level feature gates, Credyt authorizes each request against a customer balance and debits atomically, closing the billing loop without a separate payment processor alongside Stigg. Flexprice covers the open-source wallet billing use case: self-hostable, AGPLv3, with a no-code pricing dashboard and documented wallet lifecycle. Orb is the choice for high-volume AI platforms that need SQL-defined metering, enterprise contracts, and pricing simulation: a complete revenue platform that replaces both Stigg's entitlement layer and the downstream billing integration it depends on.