Vercel Data: Open-Weights Token Share Doubles to 62% in Two Months

Data from Vercel AI Gateway shows open-weights models' token usage share rose from 28.4% on June 24 to 62% on August 22, overtaking closed models (38%) for the first time and squeezing the share of frontier providers like OpenAI and Anthropic. Notably, the shift occurred while frontier-model demand itself was still accelerating through July, meaning it reflects faster open-model growth rather than shrinking closed-model demand.

Confirmed

The Vercel AI SDK founder shared platform traffic data: open-model tokens reached 62% on August 22 versus 38% closed, up from 28.4% open share on June 24
Combined OpenAI and Anthropic usage kept accelerating in July, showing overall AI demand grew faster than the frontier side

Why it matters

@AccBalanced argues open models' advantages in cost, data control and de-vendor-lock-in are showing up, with corporate boards facing more due-diligence pressure (benchmarks, TCO analysis) before approving proprietary-model spend
@rajistics and other commentators see accelerating enterprise adoption of open models, though still early
@bindureddy says frontier closed models' market position is being challenged as open-model capabilities improve
@danielmac8 asks whether US frontier labs will act to stem the momentum of Chinese open-source models
@NousResearch notes that as enterprise adoption starts, model-agnostic harness and CLI layers are booming
Christian Catalini proposed a three-way framework for future token consumption/value distribution; Hugging Face's CEO also commented on the trend

Note: the data reflects only Vercel AI Gateway's traffic mix and may not represent industry-wide token usage; outside commentary reflects personal views.

2026-08-23 ~ 2026-08-25 · 11 related posts

Primary sources

Open-weight model share on Vercel AI Gateway surges from 28% to 62% — rajistics · 2026-08-23 07:14 (UTC+08:00)
Open Source Token Share Surges to 62% on Vercel, Overtaking Frontier Models — bindureddy · 2026-08-23 23:29 (UTC+08:00)
Open-Source Token Share Jumped 28% to 62% in Two Months, Challenging Frontier Labs — AccBalanced · 2026-08-24 02:11 (UTC+08:00)

[source] Open-weight model share on Vercel AI Gateway surges from 28% to 62% — rajistics · 2026-08-23
Vercel data shows open-weight models surge to 62% token share — AccBalanced · 2026-08-23
Vercel data: Open model token share doubles to 62% in 2 months — khademinori · 2026-08-23
Open Source AI Token Share on Vercel Surges to 62% — GavinSBaker · 2026-08-23
[source] Open-Source Token Share Jumped 28% to 62% in Two Months, Challenging Frontier Labs — AccBalanced · 2026-08-24
Open source models hit 62% share on Vercel AI Gateway — NousResearch · 2026-08-24
Open-weight models claim 62% of Vercel AI Gateway traffic — rohanpaul_ai · 2026-08-25

4 near-duplicate retellings: bindureddy · daniel_mac8 · ai · Borthwick