API usage tracking for real-time billing
Built for SaaS developers building real-time voice chat applications using OpenAI's API who need granular per-user consumption tracking for subscription billing..
“Hi, I’m implementing an app using the realtime api. I want to allow users to have real-time voice conversations with the model, but I need to track how much the…”
The receipts — real demand
“Hi, I’m implementing an app using the realtime api. I want to allow users to have real-time voice conversations with the model, but I need to track how much they consume (ideally in minutes so that I can offer a clear pricing plan to the final user but, if that’s not possible, at least ...”
Full dossier
Unlock the full dossier — free
Every corroborating quote, the source receipts, and the community echo. One email, no payment.
Why this is a gap
Surfaced from a high-intensity complaint with clear willingness to pay and a specific, reachable audience.
The market
SaaS developers building real-time voice chat on OpenAI's Realtime API need per-user consumption tracking for subscription billing. No search volume, but the pain statement shows active urgency: tracking minutes of API usage at the user level is currently manual or missing.
Competition & the opening
OpenAI's native usage dashboard and Anthropic's billing are coarse-grained (account-level). No purpose-built tool currently sits between the API and subscription logic to track per-user, per-minute consumption. The gap: granular, real-time usage attribution for billing.
What's hard to build
OpenAI's Realtime API does not expose token/duration metadata in real time; you must infer consumption from connection duration and model inference patterns. Building accurate minute-level attribution requires reverse-engineering OpenAI's billing model and maintaining low-latency tracking infrastructure without adding API call overhead.
Why now
Real-time API applications need granular usage tracking for consumption-based billing, which incumbents don't expose at the minute level.
How you'd monetize
usage-based API or $99-299/mo SaaS