- Demos
- 16: ten hand-control demos, Crosscheck AI, Model Atlas, Voice Mirror, Poisoned Document, Sky Above You and Data Hall Twin (laptop or desktop only)
- Runs in
- Your web browser, with nothing to install
- Camera video
- Stays on your device in the ten hand demos
- Gestures
- Seven, mapped to each demo's own actions
- Hand tracking
- 21 points on each hand
- Built by
- Mach Advisory
What is Mach AI Labs?
Mach AI Labs has sixteen browser demos from Mach Advisory: ten hand-control experiments, Crosscheck AI™, Model Atlas™, Voice Mirror™ for local voice cloning, Poisoned Document™, a prompt-injection demo, Sky Above You™, a real-time view of the satellites overhead, and Data Hall Twin™, a live airflow and heat simulation of an AI data hall for laptops and desktops.
Do I need to install anything?
No. Every demo opens in a web page. The hand demos ask for your camera, and a mouse works too. Crosscheck AI and Poisoned Document ask for an email address to start, and so does Ask the Sky™ AI. Voice Mirror downloads about 1.5 GB of model files on first use and works best in a WebGPU browser. Data Hall Twin needs a laptop or desktop browser with WebGL 2.
Is my camera video uploaded or saved?
No. In the ten hand demos, frames are processed on your device and are never saved, uploaded or sent. The page shows a live counter of browser requests to other sites, and it should read 0. Button identifiers in those demos, Crosscheck AI, Poisoned Document and Model Atlas are counted in Google Analytics; camera frames, question text, and form entries are not included. Crosscheck AI, Poisoned Document and Ask the Sky™ AI are different: your questions go to our server (Ask the Sky™ AI also sends your city), so please do not type anything personal. Voice Mirror, Sky Above You and Data Hall Twin run in your browser and do not send in-demo button analytics.
Which gestures do the hand demos use?
Seven: pinch, open palm, fist, thumbs up, thumbs down, peace sign and point. Each demo maps them to its own actions.
Which browser and device should I use?
Automated checks cover every page in Chrome at laptop, tablet and phone sizes. Firefox was checked by eye and Safari was not tested. Data Hall Twin is for laptops and desktops only: it was checked in Chrome on a laptop or desktop, and phones and tablets are not supported. How well your hand is read depends on your camera and light.
What is Crosscheck AI?
Crosscheck AI is a hosted demo where you ask questions about a made-up insurance claim: a kitchen photo, a repair invoice, a recorded call, a policy, a fire report and a spreadsheet. With Investigate on, NVIDIA Nemotron 3 Super searches the files, does the sums and shows every step.
What is Model Atlas?
Model Atlas is a browser demo that compares curated AI models with sample or entered hardware memory and shows illustrative fit, suitable workloads and tradeoffs. The public page cannot verify exact computer memory or benchmark performance.
What is Voice Mirror?
Record a short sample of your own voice, type a new sentence and generate speech in your browser with the open Chatterbox voice-cloning model. It needs a large first-time model download and a capable browser; CPU fallback can take many minutes. Use only a voice you own or have permission to clone.
What is Poisoned Document?
Poisoned Document is a hosted security demo. One file in a made-up company's vault hides an instruction a person would never see, and a real model, NVIDIA Nemotron 3 Super, can be tricked into leaking a fake code. Switch on three defenses one at a time and watch the same attack fail. Nothing in it is real, and it asks for an email address to start.
What is Sky Above You?
Sky Above You is a mock-up that shows the real satellites over your head right now, drawn on NASA imagery of Earth. Every position and time is computed in your browser from a public orbital-data snapshot (CelesTrak, 17 Oct 2026), so they are real but not live-updated. Our Worker uses your IP address to estimate an approximate location by default; if unavailable, the page uses your browser time zone. You can choose a city or allow device location instead. Ask the Sky™ AI, powered by NVIDIA Nemotron 3 Super, can answer questions about the sky and move around it for you. It sends your question and your city (not your coordinates) to our server and asks for an email to start. Device coordinates stay in your browser. There is no camera and no account.
What is Data Hall Twin?
Data Hall Twin™ is a laptop or desktop demo only: it was tested in Chrome on a laptop or desktop, and phones and tablets are not supported. It is a mock-up of an AI factory data hall with 74 GPU racks in 4 rows. A simplified 3D airflow and heat simulation, about 0.11 m per cell, runs on your graphics chip. Drag racks, block floor vents, raise the GPU load, close the cold-aisle doors or switch from air to liquid cooling, and the heat map and the efficiency number (PUE) update as you go. There is no account and no camera.
What is the AI model in Data Hall Twin, and how accurate is it?
The AI model is a neural surrogate: a Fourier neural operator with 4,736,648 weights, trained on a laptop with NVIDIA PhysicsNeMo on 800 airflow and heat simulations that NVIDIA Warp ran for this hall with different layouts, loads and cooling settings. On 100 held-out layouts its rack inlet temperatures are off by 0.56 C on average (guessing the average field is off by 2.07 C), and it names the hottest rack correctly in 71 of 100 (in its top 3 in 91 of 100). The worst rack in a layout is off by 3.2 C on average, 9.8 C at the 95th percentile and 23.3 C at worst. These errors are against the Warp reference, not a real hall, and the live solver on the page uses different numerics, so the two can disagree. It is not an NVIDIA checkpoint; NVIDIA, Warp, PhysicsNeMo and Nemotron are trademarks of NVIDIA Corporation, which does not endorse this demo.
What does the Data Hall Twin operator do?
The operator watches for racks that run hot, GPUs that slow down and a high PUE. When it finds a problem it tests fixes on a copy of the simulation, such as closing the cold-aisle doors, opening blocked vents, moving a rack, lowering the supply air temperature or switching to liquid cooling, then offers the best one with an Apply button and the measured before and after numbers. The copy runs on a coarser grid, so after you apply a fix a single rack can differ from the tested figure by up to 1.4 C. In this mock-up it is a rule engine plus the simulator and the surrogate, with no language model. The live version would ask NVIDIA Nemotron 3 Super to choose among the tested options and explain them.
Does Data Hall Twin send my data anywhere?
No. The simulation, the AI surrogate and the operator all run in your browser. The page downloads its own files, including 9.51 MB of model weights, from machadvisory.ai and sends nothing back: there is no account, no analytics and no AI service call. It remembers only whether you turned night vision on, in your browser.
Is Data Hall Twin engineering-grade?
No. It is a mock-up. The solver is coarse and uses illustrative constants, and the AI surrogate copies a coarse reference simulation that was not validated against measurements and gives no uncertainty estimate. The numbers are not engineering-grade, not NVIDIA specifications and not a quote. Use it to see how layout, load and cooling interact, not to size a real hall.
Can Mach build something like this for my product?
Yes. Mach engineers and launches AI-first products. Hand control inside your own apps is a separate step from these demos, so tell us what you want to try.