A neutral measurer, not a directory

Sinan (司南) was China's earliest pointing instrument. We borrow the name to do one thing: give buyers a ruler they can check themselves, in a compute-and-model market with extreme information asymmetry.

What we do

Continuously collect official pricing, public market prices and each channel's effective price, and compare them on one basis; measure channel availability and consistency; build an auditable index of open embodied-AI models. Every conclusion has an evidence chain; every method is public.

What we don't do

We don't sell compute, don't run relays, don't do paid certification, don't recommend. No money from any measured vendor.

How it runs

A one-person-plus-AI team; collection, computation, generation and deployment run automatically every day. The data and code are the asset. Currently fully free, everything visible without an account.

Contact

Vendors who dispute data can send a verification request via [email protected] ; we handle it under the public corrections process and keep the original record.