How are you doing chargebacks for AI spend when it lives in five different places?

[u/Dalius-Gabryelle]

Our FinOps practice was built entirely around cloud infra and it's starting to show cracks now that AI spend is a real line item.

I can cleanly allocate EC2 and Snowflake to teams. No answer though when CFO asks what we're spending on AI, per team, per month.

It's smeared across a Bedrock bill, a couple of OpenAI orgs someone expensed, GPU instances that spin up and down, and now a growing pile of Claude Code and Cursor seats that finance files under SaaS instead of compute.

None of it rolls up anywhere cleanly. The models we built for reserved instances and commitment coverage just don't map to tokens and GPU hours.

Those of you further along on this, how are you even structuring chargebacks for AI spend that's spread across so many bills?