PromptUnit
Startup
Launched Apr 2026
The Story
I built PromptUnit after watching engineering teams burn 3-5x their AI budget without knowing it. The problem isn't the models — it's that everyone defaults to GPT-4o for everything, including the simple tasks that a $0.15/MTok model handles just as well.
PromptUnit sits between your app and your AI providers. It classifies each request, routes it to the cheapest model that meets your quality bar, and shows you exactly where your money is going. One base URL change. No code rewrites. 14-day free observation before anything changes.
We charge 20% of verified savings only. If we save you nothing, you pay nothing.
PromptUnit sits between your app and your AI providers. It classifies each request, routes it to the cheapest model that meets your quality bar, and shows you exactly where your money is going. One base URL change. No code rewrites. 14-day free observation before anything changes.
We charge 20% of verified savings only. If we save you nothing, you pay nothing.
AI Overview
AI-generated
Budget hemorrhage is the silent killer of every AI initiative that grew faster than the finance spreadsheet. PromptUnit attacks that problem head-on: it shows engineering teams exactly where their tokens bleed cash and then patches the wound without touching a line of code. Seed-stage startups accruing five-figure OpenAI bills and mid-market companies trying to rein in a mosaic of LLM providers finally have a single valve to turn.
The product deploys like an analytics layer that refuses to stay passive. Once you swap one environment variable—yes, truly one—the proxy begins logging every request in “shadow mode,” generating real-time dashboards that break cost, latency and usage down by model, feature and even individual prompt type. After a couple of weeks it presents an itemized forecast: keep current behavior and pay $12,400 next month, or let PromptUnit route intelligently and pay $6,960 instead. Enablement happens with a toggle, revertible just as fast.
Routing decisions are explained in English next to every call rather than buried in an inscrutable algorithm. If GPT-4o-mini can hit the quality bar for a routine summarization task, the dashboard explicitly credits the $0.07 saved; if a complex code-generation request stays on GPT-4o, the rationale is right there. Automatic failover means the proxy never becomes a single point of failure—it steps aside the moment it stumbles. GDPR residency controls and guarantees that your prompts never feed anyone else’s training set complete the enterprise hygiene checklist.
PromptUnit is chargeable only on verified savings, skimmed at a flat 20% of the delta. No savings, no invoice; turning it off permanently is always one click away. That alignment of profit motive and customer thrift turns loose change into an obvious install, not another procurement debate.
The product deploys like an analytics layer that refuses to stay passive. Once you swap one environment variable—yes, truly one—the proxy begins logging every request in “shadow mode,” generating real-time dashboards that break cost, latency and usage down by model, feature and even individual prompt type. After a couple of weeks it presents an itemized forecast: keep current behavior and pay $12,400 next month, or let PromptUnit route intelligently and pay $6,960 instead. Enablement happens with a toggle, revertible just as fast.
Routing decisions are explained in English next to every call rather than buried in an inscrutable algorithm. If GPT-4o-mini can hit the quality bar for a routine summarization task, the dashboard explicitly credits the $0.07 saved; if a complex code-generation request stays on GPT-4o, the rationale is right there. Automatic failover means the proxy never becomes a single point of failure—it steps aside the moment it stumbles. GDPR residency controls and guarantees that your prompts never feed anyone else’s training set complete the enterprise hygiene checklist.
PromptUnit is chargeable only on verified savings, skimmed at a flat 20% of the delta. No savings, no invoice; turning it off permanently is always one click away. That alignment of profit motive and customer thrift turns loose change into an obvious install, not another procurement debate.
Tech Stack & Tags
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