|ψ⟩ = α|0⟩ + β|1⟩

⟨0|ψ⟩ = α

H = 1/√2 [ 1 1 ] [ 1 −1 ]

HRz(θ)S

|+⟩ = (|0⟩+|1⟩)/√2

|−⟩ = (|0⟩−|1⟩)/√2

σ_z [ 1 0 ] [ 0 −1 ]

|α|² + |β|² = 1

XYZ

θ = 2 arccos(|α|)

⟨ψ|ϕ⟩ ∈ ℂ

|Φ⁻⟩ = (|00⟩−|11⟩)/√2

iℏ ∂ₜ|ψ⟩ = Ĥ|ψ⟩

σ_x [ 0 1 ] [ 1 0 ]

CXCZ

|Φ⁺⟩ = (|00⟩+|11⟩)/√2

CNOT · control₀ → target₁

RxRyRz

|Ψ⁻⟩ = (|01⟩−|10⟩)/√2

S(ρ) = −Tr(ρ log ρ)

P(0) = |⟨0|ψ⟩|²

P(1) = |⟨1|ψ⟩|²

R_z(θ) = e^−iθZ/2

U|ψ⟩ → |ϕ⟩

e^−iφ/2 · R_z(φ)

σ_yIT

|Ψ⁺⟩ · Bell

P(m) = ⟨ψ|Π_m|ψ⟩

|ψ⟩ = α|0⟩ + β|1⟩

|Φ⁺⟩ = (|00⟩+|11⟩)/√2

HCX

P(0) ≈ ½

|α|² + |β|² = 1

RxRz

U|ψ⟩ → |ϕ⟩

⟨0|ψ⟩ = α

Simulator · not a QPU

QuantumX Visual quantum circuits. Hosted when you need more.

Build and teach circuits in the browser, then queue larger jobs on shared capacity. Agentic Labs included.

Start free Try demos

Free tier · browser builder · Agentic Labs · simulator only

Product

Try circuits in the browser first

Live demos run on your device. Sign up when you want saved circuits, hosted jobs, and Labs.

QuantumX — demos

Bell, Bloch, Grover, and more — nothing leaves your device until you open the hosted app.

Open live demos

Features

One seat for learning and running

Visual builder, hosted simulation, Agentic Labs, and API access — without pretending to be hardware.

HXZCXRun

q0HCXM

q1M

Bell · 2 qubitslive

Circuit builder

Drag gates. See state as you go.

Compose circuits visually with live Bloch spheres and measurement histograms — no SDK install required to start learning.

Job	Status	Qubits
`job_8f2a1c…`	completed	12
`job_3c91be…`	running	20
`job_a01d44…`	queued	24

Probabilities · simulator

Hosted jobs

Queue larger simulations when the browser hits a wall.

Save circuits to the cloud and run hosted jobs on shared capacity. Up to 28 qubits on Team — still a simulator, never a physical QPU.

Build a Bell pair and run 1024 shots.

I'll build a 2-qubit Bell circuit (H → CX) and submit 1024 shots.

Expect roughly 50/50 on |00⟩ and |11⟩.

Building circuit · doneSubmitting job…

See in lab

Agentic Labs

Chat that can build and submit circuits.

Describe the experiment. Labs drafts gates, explains the circuit, and can queue a job when you say go.

Workspace keys

Soon

Name	Prefix	Scopes
ci-bot	`ex_live_a3…`	jobs:rw
notebook	`ex_live_9c…`	jobs:r

$ curl -H "Authorization: Bearer ex_…"
  https://api.quantumx.dev/v1/jobs

API Access

Call QuantumX from scripts and CI.

Create workspace API keys and hit REST endpoints to queue jobs and read results — built for integrations, not click-ops. Coming soon.

How it works

Build, inspect, then scale

Start in the browser. Move to hosted jobs when qubit count or shot count needs more room.

01
Build

Open the builder or try a live demo. Drop gates on wires and watch the state update.

builder · live

HXZCXRun
q0HCXM
q1M
Bell · 2 qubitslive
02
Inspect

Read Bloch spheres and histograms. Trace entanglement before you scale the qubit count.

inspect · state

|00⟩
|11⟩
03
Queue

Submit hosted jobs when you need more qubits or shots. Pull results when the queue finishes.

jobs · hosted

job_8f2a…queued
24 qubits · 4096 shots · simulator

Compare

Pick the surface that fits

Same classical simulator underneath — different doors in.

	Browser demos Nothing leaves your device	Hosted app Saved circuits + jobs	API / CLI Batch submissions
Entry	Live try routes	Builder + Labs	API keys
Auth	No account	Account + plans	Scripted jobs
Scale	Limited qubits	Up to 28 qubits	Same simulator
Persistence	No cloud save	Cloud circuits	CI-friendly

Browser demos

Nothing leaves your device

· Live try routes
· No account
· Limited qubits
· No cloud save

Hosted app

Saved circuits + jobs

· Builder + Labs
· Account + plans
· Up to 28 qubits
· Cloud circuits

API / CLI

Batch submissions

· API keys
· Scripted jobs
· Same simulator
· CI-friendly

Who it’s for

A visual seat for quantum learning

Clear audiences and honest limits — no fake quotes.

Students

See entanglement and algorithms on a Bloch sphere before you drown in matrices.

Teachers

Run lab sessions with shared demos, then point students at Free accounts for homework.

Builders

Sketch visually, then switch to API keys and the CLI when batch jobs take over.

Pricing

Start free. Scale qubits when you need them.

GPU-seconds meter hosted simulation. Browser demos stay free either way.

Free

12 qubits

3,600 GPU-s / mo

Browser builder + Labs

Start free

Pro

Popular

24 qubits

36,000 GPU-s / mo

Priority queue

Start free

Team

28 qubits

120,000 GPU-s / mo

More concurrent jobs

Start free

FAQ

Straight answers

Is QuantumX a real quantum computer?

No. QuantumX is a classical simulator for quantum circuits — visual in the browser, hosted jobs for larger runs. It does not access a physical QPU.

Who is it for?

Students learning algorithms, teachers running labs, and builders who want a visual seat before writing batch jobs against the API.

What is Agentic Labs?

A chat workspace that can draft circuits, explain steps, and submit simulation jobs when you approve.

Can I run jobs without the UI?

Yes. Create API keys in the app and submit circuits with the CLI or HTTP API for batch work.

Get started

Open a free seat today

Try demos without an account, or sign up for cloud circuits, hosted jobs, and Agentic Labs.

Start free Try demos

Quick links

Live demos — Bell, Bloch, Grover
Open app — builder & Labs
Blog — AEO, SEO, GEO notes

For data-center / white-label installs on your GPUs, contact us — operator docs ship with the Helm chart.

QuantumX Visual quantum circuits. Hosted when you need more.

Try circuits in the browser first

One seat for learning and running

Drag gates. See state as you go.

Queue larger simulations when the browser hits a wall.

Chat that can build and submit circuits.

Call QuantumX from scripts and CI.

Build, inspect, then scale

Build

Inspect

Queue

Pick the surface that fits

Browser demos

Hosted app

API / CLI

A visual seat for quantum learning

Students

Teachers

Builders

Start free. Scale qubits when you need them.

Free

Pro

Team

Straight answers

Open a free seat today