Open-Source Models Hit Record 78.4% of Token Volume on Vercel AI Gateway

Vercel founder Guillermo Rauch disclosed that open-source models accounted for a record 78.4% of daily token volume on Vercel AI Gateway, versus 21.6% for closed models. By inference spend, Moonshot and DeepSeek ranked third and fourth that day, and together with Z.ai the three Chinese vendors outspent OpenAI. The figures were widely reshared and sparked debate about the eroding moat of closed labs.

Confirmed

Open-source models hit 78.4% of daily token volume on Vercel AI Gateway (closed: 21.6%), per Rauch, a likely single-day record.
Moonshot and DeepSeek ranked 3rd and 4th by inference spend; combined with Z.ai, the three Chinese vendors outspent OpenAI.

Why it matters

Resharer ccerrato147 titled the story "I Have No Moat And I Must Scream," arguing closed vendors' moats are failing.
Alex Banks rounded up reactions: Emad Mostaque asked what labs do once open models match the frontier after DeepSeek's V4.1 Flash, estimating its training cost at $10M, far below comparable GPT models; the remaining moat is brand.
gerardsans argued firms are moving AI pipelines partly or fully to self-hosted open models, breaking the per-token business model—open models run locally on desktops, pinning token prices near zero as lab monopolies keep eroding.

2026-09-21 ~ 2026-09-22 · 5 related posts

Full story(3 episodes)→

Episode 1: Open-Weight Models Hit Record 78.4% of Tokens on Vercel AI Gateway(2026-09-19, 10 posts)
Episode 2: Open-Source Models Hit Record 78.4% of Token Volume on Vercel AI Gateway(2026-09-21, 5 posts)
Episode 3: Open-Source Models at ~10% of AI Revenue? Analysis Slammed as Outdated(2026-09-21, 6 posts)

Primary sources

Open models hit 78.4% of Vercel token volume; Chinese labs' spend tops OpenAI — AccBalanced · 2026-09-21 14:19 (UTC+08:00)
Open Models Hit Record 78.4% of Vercel Token Volume—Frontier Labs' Last Moat Is Brand — thealexbanks · 2026-09-22 21:09 (UTC+08:00)
Open-source models running locally have pegged token prices near zero — gerardsans · 2026-09-21 21:02 (UTC+08:00)

Open-source AI models hit record 78.4% of token volume on Vercel's AI Gateway — ccerrato147 · 2026-09-21
Open models hit 78.4% of token volume on Vercel AI Gateway; Chinese labs' spend tops OpenAI — burny_tech · 2026-09-21
[source] Open-source models running locally have pegged token prices near zero — gerardsans · 2026-09-21
[source] Open Models Hit Record 78.4% of Vercel Token Volume—Frontier Labs' Last Moat Is Brand — thealexbanks · 2026-09-22

1 near-duplicate retellings: AccBalanced