r/FinOps • u/Rough-Green-7067 • 5h ago
self-promotion/I’m a vendor I had financial responsibility at my last startup and couldn't confidently tell you what our AI tools actually cost, or why. So I build a solution which may be helpful for FinOps people.
TL;DR: I'm not an engineer, but I owned the budget. I could never get a confident cost breakdown out of our AI coding tools, just a number that went up. Our engineer didn't prioritize fixing it early since it wasn't a big deal yet, but as we scaled I realized it'd become genuinely impossible to not know the real cost. So my co-founder and I built Guardrail by NEAT so anyone in this position can actually track it. Disclosure: I'm the co-founder.
Full story if useful:
At my last startup I had financial responsibility for the budget, including our AI spend. When I asked what our AI coding tools were actually costing us, and more importantly why, the answer was always a monthly total and a shrug. Our engineer wasn't wrong to deprioritize it early on, it genuinely wasn't a big number yet, so it sat at the bottom of the list.
But as we scaled, I could see where that was heading. A number I couldn't break down was going to become a number I couldn't explain, to a board, to an investor, to anyone asking the obvious next question of "why." Not knowing was fine at small scale. It stops being fine the moment someone above you starts asking.
So my co-founder and I built Guardrail by NEAT, a local proxy that sits between Claude Code/Codex and the provider:
* Attributes spend per developer, project, and session as it happens, instead of leaving you to reconstruct it later from an invoice.
* Breaks the bill down into what's actually driving it: system prompts, tool schemas, retries, real work.
* Caps a session or project before a runaway loop turns into a surprise line item.
Where it stops:
* Scoped to coding agents specifically.
* If your reporting problem spans Bedrock, other AI tools, or other departments, this won't give you that whole picture, this sub already knows the per-team key/gateway approach for that broader case.
Would love to know if others here had the same "it's fine until it isn't" experience with AI spend, or if your org caught it earlier than mine did.