AI Spend Ledger
A system of record for company AI usage and spend.
Tallin folds provider apps, API usage, gateway events, billing evidence, and imports into one ledger where every aggregate can explain its coverage.
What the ledger captures
Spend visibility that does not flatten the evidence.
The ledger is designed for finance, security, and AI owners who need a common operating record, not another partial provider dashboard.
Provider and model
User, team, and department
Timestamp and request volume
Tokens, cost, and source confidence
Signal source and coverage state
Gateway, provider, billing, and imported paths
Provider-wide view
Compare spend and request volume across ChatGPT, Claude, Gemini, Copilot, API usage, and imported usage paths.
Explainable totals
Open any rollup and see which dollars are observed, inferred, enforced, or not covered.
Refresh confidence
Surface failed scheduled refreshes and stale data before old provider evidence becomes a leadership report.
Build the ledger first.
Create a workspace, connect the first provider signals, and see what is observed, inferred, enforced, and not covered.