Larkspur Labs

AI spend audit

Reporting on 1 Sep 2026 to 30 Sep 2026. OpenAI and Anthropic connected with admin keys that Tilwe only uses to read usage and cost. Cost per customer and per feature come from two headers the app sends through the Tilwe gateway.

Generated 1 Oct 2026, 09:00 UTC · Example report

Days of September1 to 30 Sep

Every figure below follows this range, except Places to save, which uses the whole month.

Headline figures, example data

Daily spend

Tap, hover or focus a bar for the day's figure. Use the arrow keys to move between days.

Spend by model and provider

By provider
    By model

    Cost per customer

    Your top 10 customers by AI cost, set against what they pay you. Rows in red cost you more in AI than their plan brings in.

    Top 10 customers by AI cost, with plan price and margin. Example data. Select a column header to sort.
    #
    Margin is plan price minus AI cost.2
    Places to save
    Estimated, per month

      Conservative estimates from September usage. Assumptions in note 3.

      What we did not see

      Prompts are never read

      Tilwe reads billing and usage records: model, token counts, timestamps, key, and the customer and feature tags. It never sees prompts or model output.

      Providers not connected

      Spend on providers you did not connect, such as self-hosted models or a cloud marketplace bill, is not in these totals.

      The last day may still move

      Provider billing settles about a day late, so 30 Sep can change by a few dollars after this report.

      Notes

      1. Example data. Larkspur Labs and every customer name are fictional. All figures are generated example data, kept internally consistent: every total on this page is the exact sum of its rows, in cents. Total spend is Tilwe's calculation from usage at list prices, so the tables add up to it.
      2. Median cost per customer is across all 47 paying customers with AI usage, not only the top 10.

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