We open-sourced the AI gateway behind our SaaS. Looking for feedback from AI SaaS founders

We just open-sourced Alephant AI Gateway, the gateway layer behind our AI FinOps product.

The problem we’re working on: AI SaaS teams start with one provider, then add more models, retries, agents, background jobs, test traffic, and customer-specific usage. Eventually the bill arrives and nobody knows which feature, user, or agent caused the spend.

Alephant Gateway is open-source and OpenAI-compatible:

• 50+ providers
• 320+ models
• BYO keys
• Hosted or self-hosted
• Routing, fallback, caching, policy, logs
• Usage metadata for cost visibility

Repo: https://github.com/AlephantAI/AIephant-AI-Gateway

Question for SaaS founders building AI features: Are you tracking AI cost per user/customer today? If yes, how?