78%

average inference cost reduction

The AI model layer for teams that ship

Route every task to the right model. Stress-test every benchmark before you publish. One platform, two capabilities.

For Engineering Teams

Stop overpaying for AI

Most coding tasks don't need a frontier model. Furiwake classifies each task and routes it to the optimal model — cutting costs without cutting quality.

Interactive Demo

Cost Calculator

Estimate your savings from intelligent model routing.

$12.4K/mo
$1K$100K

Task Mix

40%
35%
25%

Current

$12.4K

/ month

With Furiwake

$4.8K

/ month

Before: all frontier

After: intelligent routing

Frontier
Mid-tier
Light

Estimated monthly savings

$7.6K

61% reduction in inference spend

See how routing works

For AI Labs

Your benchmarks are more fragile than you think

Hidden annotation pipeline settings can flip model rankings entirely. Rensei stress-tests your benchmarks so you can publish with confidence.

Interactive Demo

Ranking Inversion

Drag the slider to change evaluation strictness and watch the model rankings shift.

0/9
Lenient
Strict
Same data. Different settings. Different winner.
1Model A
0.82
2Model B
0.71
3Model C
0.68
4Model D
0.65

Built on peer-reviewed methodology at a top-tier NLP venue

Explore the methodology

Why both? Because they make each other better.

Routing decisions are only as good as the benchmarks that validate them. Benchmarks are only useful if they reflect real workloads.

Routing

Classifies tasks and selects the optimal model, generating performance data.

data ↓ · ↑ signals
Rensei

Stress-tests benchmarks and sends validated quality signals back.

This feedback loop is why Furiwake improves continuously — and why using both together delivers more than either alone.

Frequently asked questions