AI Revenue: Where the ARR Comes From
This board answers three things: how much AI is earning, how fast it is growing, and which product drove each step up.
Read from the map: Already happening, and each quarter adds more than the one before
Anthropic run rate
$65B
Aug 2026
OpenAI run rate
$70B
Sep 2026
Anthropic monthly growth
13.7%/mo
Aug 2026
Ramp enterprise adoption
43.5% / 39.7%
Jul 2026｜Anthropic / OpenAI, share of paying companies
Next check
Mid-2027 base-case path: $236B (the end-2026 mark of $138B was already passed in 3Q26)
Five companies now $141B (3Q26)
How to read this board
Core view: A step up in ARR = a new product surface × a new customer group × quality above the bar × spending that keeps rising. A model release alone does not create a step. The first product to reach a new customer group takes the burst; late movers pick up what is left.
- The shape is launch, then a growth burst, then a month-by-month fade, and fading is not weakening.
- Only two new surfaces in a row that fail to produce a burst count as a real slowdown.
- How often a company discloses is itself a signal: frequent updates mean accelerating, long silence means digesting.
- Percentages serve the stock narrative; dollars serve capacity planning.
Term: A "product surface" is the layer where model capability meets a user's workflow: the harness, permissions, distribution and billing. ChatGPT, Claude Code and Cowork are surfaces; the model itself is not.
1ARR path and product launches
The log axis shows growth rates: the same slope means the same multiple. Vertical dashed lines are product launches; shaded bands are the main growth bursts, orange for Anthropic, blue for OpenAI. Figures are annualized revenue as disclosed in the press. From 2026 on, the ARR the two companies add in a year is several times the previous three years combined.
ARR Path ($B, log) vs Public Launch Events#
On a log scale both companies' ARR climbs in steps, and each step lines up with a product launch.
How to read this chart
Figures are annualized revenue as disclosed in the press, on a log axis. Shaded bands mark the main growth phases; vertical dashed lines mark product launches.
Source: FinSight compilation and estimates · Updated 2026-09-30
2New ARR per month: what data centers have to absorb
Each step is the average monthly addition between two disclosures. In three and a half years neither company has turned negative; the worst case was only slower growth. The dashed segment is OpenAI's July stretch with no disclosed figure, backed out from company comments, directional only.
New ARR per Month ($B) = What Data Centers Have to Absorb#
How to read this chart
Each step is the average monthly increase between two consecutive disclosed figures. The dashed line is a breakdown of OpenAI's July, inferred from management's 20% month-on-month comment, for direction only.
Source: FinSight compilation and estimates · Updated 2026-09-30
3Monthly growth rate: the step detector
Left, Anthropic: the Claude Code burst ran 20% to 30% a month, the Cowork burst 37% to 63%. Right, OpenAI: after the consumer burst it ground along at 8% to 12% a month for two and a half years; the $70B run rate disclosed on September 29 lifts the latest stretch to about 44%, and whether that is a new step waits on Ramp's September figures.
ARR Growth per Month, Anthropic (%/Month) = Step-Up Detector#
How to read this chart
Monthly growth is the step-function detector: the Claude Code step in 2Q25 ran 20% to 30% a month, the Cowork step in 1Q26 ran 37% to 63%.
Source: FinSight compilation and estimates · Updated 2026-09-30
ARR Growth per Month, OpenAI (%/Month)#
How to read this chart
The blue dashed stretch covers February 28 to August 13, when OpenAI disclosed no figure; it is inferred from company statements and is for direction only. The solid line over the same period is the interval average.
Source: FinSight compilation and estimates · Updated 2026-09-30
4Breadth check: how many companies are paying
Ramp measures the share of companies paying. The ChatGPT consumer burst (2.1% to 17.6% between January and March 2023) is still the largest on record. In the six months after Cowork, Anthropic added 24 points and passed OpenAI in May 2026; OpenAI added 0.23 points in July, ending its decline.
Ramp Enterprise Penetration (% of Companies) = the Breadth Layer#
How to read this chart
ChatGPT's consumer burst (2.1% to 17.6% between January and March 2023) remains the largest wave on record. OpenAI stopped falling in July 2025 with a 0.23-point uptick.
Source: Ramp AI Index (public data); FinSight compilation · Updated 2026-09-30
5Depth check: how much each company spends
Monthly AI spend per employee in three tiers: the top 1%, the top 10% and the typical company. Dashed lines are estimated from Ramp's published chart; dots are figures disclosed in Ramp's articles. The typical company pays about one seat; the top 1% are building their own AI workflows. In August the top 1% fell 9.7% month on month for the first time, which Ramp attributes to seasonality and lower unit prices; watch whether September recovers.
6Extension: new ARR per new chip
Divide new ARR on the demand side by new compute on the supply side and you get the marginal yardstick. Marginal above average means the squeeze continues; marginal falling below average is the early warning of a top. The full supply and demand projection lives on the compute board.
New ARR per New Chip (Monthly Approximation, $/Chip/Year)#
How to read this chart
The orange line is a monthly approximation: OpenAI plus Anthropic monthly new ARR divided by market-wide monthly new compute. Dark dots are the exact quarterly values (five companies in the numerator). The grey dashed line is the average yardstick. 4Q24 was the trough of confidence.
Source: Epoch AI (CC BY 4.0); FinSight compilation and estimates · Updated 2026-09-30
7Event scorecard: which launches produced a burst
✔ produced a burst, ✘ did not, ⏳ still being checked. Orange is Anthropic, blue is OpenAI, grey is industry infrastructure. GA means general availability.
The event notes are kept in Chinese for now; an English version follows once the wording is settled.