payments
Pricing
You save first. Then we earn.
We take 40% of your savings. You keep 60%. STONE saves 0% → you pay 0. The worst case is identical cost to going direct.
H.1 transparent pricing formula
provider_cost
List-price cost of tokens actually sent
+
lexico_profit
40% × gross_savings
customer_charge
customer_charge = provider_cost + lexico_profit
gross_savings ≤ 0 → lexico_profit = 0 → you pay provider cost only
calculate
Savings calculator
Estimate your savings
Pick your model, set your volume, see the numbers. Estimates vary by content and conversation pattern.
$12.90
You save
51.6% less than direct
Direct cost (no Lexi)
$25.00
Provider cost
$3.50
Lexi fee (40% of savings)
$8.60
Total with Lexi
$12.10
speed
Rate limits
Limits scale with you
No tiers to pick. No sales calls. Your limits expand automatically as your lifetime spend grows.
Free
lifetime spend
120
req/min
10,000
API keys
$5+
lifetime spend
2,000
req/min
10,000
API keys
$50+
lifetime spend
10,000
req/min
10,000
API keys
$500+
lifetime spend
30,000
req/min
10,000
API keys
$1000+
lifetime spend
60,000
req/min
10,000
API keys
help
Common questions
Frequently asked
What if Lexi can't save tokens?
You pay nothing to Lexi. The original request is forwarded unchanged, and you only pay the standard provider cost.
Do I need to provide my own API keys?
No. Lexi uses its own provider accounts. You authenticate with a Lexi API key.
Does restructuring affect quality?
In blind benchmarks, Lexi scored 8.4/10 recall accuracy versus 9.0/10 for full context. The gap is in peripheral detail, not factual errors. If restructuring can't help, the original is sent unchanged.
Get started free
Start saving tokens
from the first request.
See the savings on your own requests in minutes. Sign up, paste your provider key, and go.