Model routing
Placement: a judgment drawn from the evidence, open to correction (dispute it).
The model
- Definition
- A middleware layer sits between developers and multiple foundation-model providers, routing requests to whichever model fits and monetizing by taking a spread or fee on the token volume that passes through it.
- In one line
- One interface over hundreds of models, routing each request to the best fit and taking a margin on the tokens that pass through.
- What compounds
- More developers bring more volume, which brings more models, which brings more developers.
- Who accelerates
- Builders get choice and resilience; the models underneath become more interchangeable.
- What it displaces
- Single-provider lock-in.
- Stops working when
- If the large providers build routing in natively, or margins go to zero as models converge.
Evidence
Companies 2
Evidence items 2
Grades 2A 0B
Latest dated 2026-09
Counter-evidence 1
Evidence items 2
Grades 2A 0B
Latest dated 2026-09
Counter-evidence 1
The three labels
1. Flow through · loop gain about zero. The curve helps it, but the gain passes straight through to customers and rivals.
Owning the choke points · money lands in where machine choices are made and paid.
Control-point loop · own where choices are made and paid, capture the flow.
Same rung and family
Named companies 2 companies · grade per item
| Company | Claim | Date | Gr | Source |
|---|---|---|---|---|
| OpenRouter US · scaleup · best A |
OpenRouter raised a $113 million Series B led by CapitalG, reporting weekly token volume growth from 5 trillion to 25 trillion tokens over the prior six months, serving 8M+ developers across 400+ models, and projecting over a quadrillion tokens processed in 2026 | 2026-05-28 | A | OpenRouter |
| Vercel (AI Gateway) US · scaleup · best A |
Vercel's own AI Gateway Production Index reports open-weight models reaching a majority share of gateway token volume over the course of 2026, with monthly published breakdowns of volume and spend by model | 2026-09 | A | Vercel |
Counter-evidence Reversals, failures and disputes
| A named commentary piece argues OpenRouter's own data on rising open-weight-model share is 'systematically eroding its own reason to exist' (as models converge and become commoditized, the routing margin compresses) | 2026 | BigGo Finance |
Sources 3
OpenRouter openrouter.ai · 2026-05-28
Vercel vercel.com · 2026-09
BigGo Finance finance.biggo.com · 2026
Vercel vercel.com · 2026-09
BigGo Finance finance.biggo.com · 2026