ANT · Research
Anthropic's 900% retention is a growth rate, not a contract
The headline metric in Anthropic's S-1 is Net Revenue Retention of approximately 900%. Read with its definition, a one-quarter base, a $1 entry bar and revenue growth of 1,300%, it mostly measures how fast the whole business grew, not how firmly customers are committed.
This is preliminary research on Anthropic, built only on the S-1 filed Oct 26, 2026, in the same format as the rest of our software coverage. The offering price, share count and valuation multiples are still blank in the filing, so we will publish updated research once the stock is public.
The headline metric in the filing is Net Revenue Retention of approximately 900%. Read with its definition, it mostly measures how fast the whole business grew, not how firmly customers are committed.
| Scorecard | Read |
|---|---|
| Thesis | The 900% figure is a quarterly, revenue-weighted ratio with a $1 entry bar, set while revenue grew 1,300%, so it tracks the adoption curve more than contracted loyalty |
| What proves it wrong | Remaining performance obligations grow faster than revenue, and Net Revenue Retention stays far above software norms once year-on-year growth slows |
| Next catalyst | Offering terms, share classes and the first public quarter, which would add Q3 2026 revenue to the Sep 30 retention figure |
| Key multiple | None yet. The S-1 has no offering price or share count, so we show no multiple until it does |
| Contracted revenue | Remaining performance obligations of $10.8B at Jun 30, 2026, about 75% due within 12 months, against Q2 2026 revenue of $11,555M |
| Balance sheet | $112.4B of cash and $19.3B of short-term investments at Jun 30, 2026; a $15B revolver since September, with no borrowings at Jun 30; $269.4B of minimum cloud spend |
1. What 900% is built from
Figures come from Anthropic's Form S-1 [1]. The filing says Anthropic reached "Net Revenue Retention of approximately 900% as of September 30, 2026" and uses it as evidence that customers expand once Claude is embedded in their work [1].
The definition sits in the defined terms at the front of the document, and every part of it matters [1]:
- The entry bar is $1. A Qualified Customer is "a customer with at least $1 of revenue during the Base Period" [1].
- The base is one quarter. "The Base Period is the three months ending a year prior to the measurement date. The Current Period is the three months ending as of the measurement date" [1]. For the Sep 30, 2026 figure, the base is the third quarter of 2025.
- Revenue weighted. The ratio divides the Qualified Customers' Current Period revenue by their Base Period revenue [1]. Large accounts drive it.
- Pro and Max are out. The ratio excludes subscribers to the Claude Pro and Max plans, "whose fixed-price subscriptions do not reflect the expansion and contraction behavior this metric is intended to capture" [1].
- A customer is broad. Elsewhere, "customer" means "a prosumer or an organization that uses our models, platform, or applications"
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