Primary questions
- What did Altman fix? A broad capability level, illustrated by GPT-4 and GPT-4o; the numerical example is token price, not job cost. [1]
- What did Epoch fix? A score threshold on each named benchmark, then the cheapest estimated model/settings bill to reach it on each date. [2]
- Is 13× a forecast? No. It is an annualized summary of about three years of observed/fitted cost-frontier declines. Continuation is uncertain. [2]
- Does the 725× GPQA pair set that rate? No. It is a single threshold and exceptionally steep interval; the reported average pools five benchmarks and many score levels. [2, 4]
- Why can the meters diverge? Reasoning tokens per question, performance of each token, model mix, and optimization over settings all change the cost of an answer beyond a token’s sticker price. [2]
- How robust are the observations? The 75% science-example rows are in Figure 2; Epoch cautions that model coverage and prices are noisy, and tasks can be optimized for benchmark questions. [2, 4]
- What would change the decision to keep separate tiles? A credible common dataset for both token price and full cost-to-score, with comparable score, models, date ranges, and uncertainty, could support a linked multi-meter chart—but not simple value splicing.
Unresolved questions
- How much of Epoch’s measured decline transfers to longitudinal, quality-checked real work rather than benchmark questions? The report does not establish a general conversion.
- What is the cost of switching models, integrating them, retrying failures, and reviewing answers for a particular buyer? The report explicitly focuses on a cheapest frontier, not a complete enterprise bill.
- Does the same slope persist beyond the September 2026 observation window? Not established; changes in test difficulty, model supply, energy, or deployment costs could alter it.
- How much of the decline is hardware efficiency versus algorithms, pricing strategy, competition, and more efficient reasoning? The report does not causally decompose the aggregate rate.