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Model-Layer Spend Mix: Are New Flagships Actually Getting Paid? (Ramp AI Index Model Breakdown)
Model-Layer Spend Mix: Are New Flagships Actually Getting Paid? (Ramp AI Index Model Breakdown)#
Fable 5, a brand-new line, grew from zero to about a tenth of spend; Opus 5 started higher because it inherited its predecessor's traffic.Draft, pending review
How to read this chart
Opus 5 replaces an existing line and inherits its traffic, so it starts high; Fable 5 is a brand-new line growing from zero. The two cannot be measured with the same ruler. Ramp attributes spend by API usage and cannot see subscription fees, so it understates Fable's contribution.
Source: Ramp AI Index (public data); FinSight compilation · Updated 2026-09-04
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