ModelAssay — Provable LLM savings

See it for your stack

A 90-second walkthrough — pick the workload closest to yours.

Same product, your numbers. ModelAssay groups your traffic into classes, proposes a cheaper route only when it can prove quality holds, and you approve what goes live.

app.modelassay.com/dashboard

1:14 · demo

Support assistant · example

$5,100/mo saved · 32%

on a $16,000/mo model bill

Press play — and switch workloads with the tabs above.

One line to try it

No SDK. No rewrite. Change your base_url.

Keep your existing OpenAI or Anthropic client, your keys, your providers. ModelAssay is a drop-in proxy — you're in shadow mode from the first request, and nothing about your live traffic changes until you say so.

python

from openai import OpenAI

client = OpenAI(
    # the only change ↓
    base_url="https://proxy.modelassay.com/v1",
    api_key=MODELASSAY_KEY,
)

How it works

Finds it, proves it, and only then bills it.

01

Drop in, in one line.

Point your existing SDK at a new base_url. Keep your keys, your code, your providers — OpenAI, Anthropic, OpenRouter, and the open-source models it serves.

02

It finds the savings, three ways.

Routes each call to the cheapest model that holds quality, serves repeat work from cache, and batches what can wait — measured against your real traffic.

03

It proves quality holds — continuously.

Every route-down is validated by statistically sampling live traffic, and auto-reverts the moment quality drops below the bar you set. You approve what goes active.

04

You only pay on verified savings.

We measure the real, proven delta and bill a share of it. No savings, no charge — the number on your invoice is the number we can defend.

Pricing

Pricing that can't cost you money.

You pay a share of the savings we verify — measured against your locked baseline, quality-checked on live traffic. If we don't save you money, you don't pay. That's the whole deal, and it's why the name is an assay: a test of true value.

Cut your LLM bill without touching quality.