Try Luxi · downloads and demos

Try Luxi on your own machine.

Luxi Book is the professional try: a closed-binary deterministic option-book pricer with a SHA-256 receipt on every run. LuxiRisk is the free crypto/retail position-sizing CLI. Inference evidence lives on the Evidence page and is kept separate from both.

Luxi Book downloads LuxiRisk freebie Prefill proof & evidence →

1 · Luxi Book · the professional Quant try

Luxi Book - deterministic option-book pricing with receipts

Luxi Book takes a CSV position book, prices it with European Black-Scholes / Black-76, returns five Greeks per position, and attaches a SHA-256 receipt to the run. You bring your own inputs: time to expiry, rate, and volatility. No live market feed, no implied volatility solver, no VaR - and it is not a fund desk. It is a closed binary you can run on your own hardware and check the receipt yourself.

Downloads

File	Platform
luxi-book-macos-arm64	macOS Apple Silicon (CPU)
luxi-book-linux-x86_64	Linux x86_64 (CPU)
luxi-book-linux-x86_64-cuda	Linux + NVIDIA GPU (`--mode gpu`)
example_book.csv	Example position book
*.sha256 checksums (repository folder)	Matching checksums for every file, in the download folder

There is no macOS GPU binary. The CUDA build needs a live NVIDIA driver. Binaries are unsigned: on macOS, right-click the file and choose Open the first time.

Run it

# Mac CPU
chmod +x luxi-book-macos-arm64
./luxi-book-macos-arm64 price --book example_book.csv --out report.csv --receipt receipt.json

# Linux CPU
./luxi-book-linux-x86_64 price --book example_book.csv --out report.csv --receipt receipt.json

# Linux CUDA
./luxi-book-linux-x86_64-cuda price --book example_book.csv --out report.csv --receipt receipt.json --mode gpu

What we measured (example_book.csv, 2026-08-15)

Running the published example_book.csv through the published binaries produced the same receipt on every box we tested: Mac Mini CPU, RunPod x86 CPU, and A100, H100, and H200 GPUs (two GPU runs each), via the black_scholes_book_kernel path.

Field	Value
Receipt (SHA-256)	`4a21b1e708fa5c694bf48237df5e5bd3b94599e6273d07986283c6c6b8e3c97a`
ATM_CALL price	`10.4505835721856215`
Boxes matched	Mac Mini CPU · RunPod x86 CPU · A100 · H100 · H200 (two GPU runs each)

Scope of the receipt claim. The identical receipt holds for this book, these boxes, and this kernel - it is not a claim that all GPUs always match. Luxi Book is not desk VaR, not live markets, and not a “quant risk engine” fund product. The risk pipeline is not the product face; the deterministic option-book pricer with receipts is.

Browse all Luxi Book files on GitHub → About LuxiQuant → e@ewaller.com

2 · LuxiRisk · the freebie

LuxiRisk - free offline crypto/retail position CLI

LuxiRisk is a free, offline command-line tool for crypto and retail traders: liquidation price, position sizing, and maximum dollar loss. Every calculation carries an Ed25519 signed receipt (lxr1_…) so a result can be re-checked later.

Binaries are unsigned, so expect the usual macOS Gatekeeper or Windows SmartScreen friction on first launch.

What LuxiRisk is not. LuxiRisk is the retail freebie, not the institutional option book. For the professional try, use Luxi Book.

Download LuxiRisk v0.2 →

3 · Evidence and other demos

Inference evidence and other demos

The Luxi Inference Engine's prefill evidence is published on the Evidence page as separate facts that are never blended: the independent TESTfort baseline, the internal matched vLLM head-to-head at batches 16 and 32, and the separate internal absolute prefill result at batch 72 with no matched vLLM arm. Board joules are GPU-board energy, not wall-plug; prefill positions are not decode tokens; none of it is a multi-tenant full-server leadership claim.

A serve demo binary (toy generate path with a locked scoreboard) exists as a technical demo; it is not a serving product and not part of the evidence ladder.

Absolute prefill result → Matched head-to-head → Evidence packs →