Physix FrontierPhysix Frontier · News Briefing Card (Hacker News · Oct 19, 2026)
Study: AI Capability Cost Falls 13x a Year, Open Models Take 70% of Gateway Traffic
KEY FACTS
- Epoch AI data shows the cost of fixed AI capability has fallen about 47% per quarter since 2023.
- Vercel gateway data shows that in October 2026 open-source models accounted for 71.5% of token traffic and about 25% of spending.
- DeepSeek-v4.1-Flash handled nearly half of September tokens but accounted for only about 2.6% of gateway spending.
- 68% of teams that increased spending on open-source models also increased spending on closed-source models.
- Open-source models trail the closed-source frontier by about four months on Epoch benchmarks, and the gap has not kept narrowing.
KEY DATA
about 13xAnnual decline in fixed capability cost
about 47%Quarterly decline in fixed capability cost
71.5%Open-source models' share of token traffic
about 25%Open-source models' share of spending
PHYSIX OBSERVATION
The steep cost decline lets open-source models capture high-traffic, low-risk tasks while the closed-source frontier retreats to high-value scenarios. This is not capability peaking; it is the focus of competition shifting from product differentiation to control of infrastructure. For users it is a cost-saving boon, but for leading labs it means they must lock in long-term rent through compute and distribution.
Source: Hacker News report