Aanchal Parmar
Product Marketing Manager, Flexprice
2. Kill Bill + Aviate
Kill Bill is a mature open-source billing engine. Paired with the Aviate plugin, it becomes flexible enough to support outcome-based billing, if you’re comfortable wiring it together.
You can define billing events like ticket_resolved or conversation_closed, push them into Aviate, and attach wallet-based credit logic or invoice rules to each event.
It supports pre-granted credits, event deduplication, and usage aggregation all configurable through a pricing catalog you manage.
It’s not tailored for Support AI out of the box, but it gives you the tools to build what you need. If your team wants control over billing logic and already runs self-hosted infra, Kill Bill + Aviate is a solid option.
3. Stripe Billing
Stripe Billing wasn’t built for outcome-based pricing—but if your product can model outcomes as usage events, it’s flexible enough to support the structure.
You can push events like support_ticket_resolved as metered usage records tied to a subscription item. Stripe handles aggregation (sum, count, last value) and lets you charge per unit, offer free tier thresholds, or structure pricing by resolution type.
It also supports credit-based discounts, invoicing, and hybrid plans with both flat fees and usage-based components.
But Stripe doesn’t treat “outcome” as a first-class concept. You’re still responsible for defining what success looks like, converting it into a usage metric, and making sure it doesn’t get double-counted.
It works best if you already use Stripe for payments and just need a flexible billing layer to price per unit of success.
4. Hyperline
Hyperline is a modern billing platform built for SaaS teams that want to move fast with hybrid or usage-based pricing.
While it doesn’t offer native outcome-based billing, it gives you the tools to model outcomes as metered events, especially when tied to feature access or AI-powered workflows.
You can push custom usage data like ticket_resolved or csat_above_threshold and structure plans that charge per event, apply entitlements, or grant usage-based access by tier.
It’s especially useful if your Support AI product bundles outcomes into features (like “resolution automation” or “human escalation fallback”) and you want to tie billing to how those features are used.
Hyperline gives you control over usage limits, plan upgrades, and overage handling, but you’ll still be responsible for defining and validating the outcome logic in your backend.
Build trust with billing that reflects real outcomes
When your product delivers real results like resolving support tickets or preventing escalations, your pricing should reflect that.
Outcome based billing helps you align value with revenue. It sets clear expectations, builds transparency with your customers, and gives you the freedom to price around what your product actually achieves, not just what it consumes.
But to get there, you need infrastructure that can handle outcome logic at the billing layer. Most platforms still treat usage as the default. Only a few give you the tools to define success, meter it reliably, and turn it into revenue without duct tape.
If you’re ready to move past usage-based pricing and start charging for real impact, Flexprice is built to support you from day one.
