AI spend is growing fast, and most of it arrives unattributed. Your business needs to go deeper than the top-line total, understanding which team, project, or product is driving that cost. AI provider invoices don't carry that detail on their own, but your LiteLLM gateway already does: every request is priced and tagged by team, key, and model.

Ternary now documents a direct path to bring that gateway detail into your unified technology P&L. Point LiteLLM's built-in FOCUS export at a bucket you control, ingest it through Bring Your Own Data, and pair it with your AI provider invoice in the Billing Rules Engine: the invoice supplies the dollars, the gateway supplies the proportions. The output is a zero-sum reallocation of real invoiced spend across teams and cost centers that is reconciled to the bill, not estimated.

• Team, model, and provider breakdowns - report on AI spend by team, model, and provider, alongside your other cloud costs.
• User- and key-level granularity - map LiteLLM's Tags field to break down by user and API key with no extra tagging work.
• Invoice-true reconciliation - Reallocate Costs billing rules split invoiced AI dollars using gateway proportions.

Requires a self-hosted LiteLLM proxy (v1.98.0+) writing its FOCUS export to a GCS or S3 bucket.

Learn how to get started with our LiteLLM AI Gateway guide.