if you were paying attention you would've noticed that between 2025 and 2026 the pricing of these things have somewhat changed. How does the extrapolation look with that?

Good thing we have reams of data on this, holding performance constant the cost goes down 10-40x per year: https://epoch.ai (like the first box)

Also, frontier token prices have remained roughly constant:

3.5 sonnet: $3/$15 3.7 sonnet: $3/$15 Opus 4: $15/$75 (opus tier) opus 4.1: same Opus 4.5: $5/$25 Opus 4.6 (same) 4.7 (same) 4.8 (Same) Fable: $10/$50

So Fable is cheaper than Opus 4 was at launch.

One thing that has increased quite significantly? Spending and adoption.