How do I simulate a Cournot duopoly?

Open this page and use the live Monopoly Pricing tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.

Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.

Can I use my own numbers?

Absolutely — every input is adjustable, and with data import you can drive a Cournot duopoly from your own measurements.

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Monopoly Pricing for a Cournot duopoly

Simulate a Cournot duopoly live in your browser. This runs the real Monopoly Pricing solver — adjust the inputs, watch it respond instantly, and export the result. No install, no account.

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Monopoly PricingLive

market power & deadweight loss

Controls

Presets

Marginal cost

A monopolist maximizes profit where marginal revenue equals marginal cost — then charges the price the demand curve allows. Because MR lies below demand, the monopoly produces less and charges more than a competitive market (where price equals MC). The red triangle is the deadweight loss: mutually beneficial trades that never happen.

▶ Run in Python

Data Inspector

Monopoly price$65.0

Monopoly qty35.0

Competitive qty70.0

Deadweight loss613

Profit1225

Governing equation

M R = 100 - 2 Q = M C = 30 \Rightarrow Q_{m} = 35.0, P_{m} = $65.0

Reading this result: At MC = $30, the monopolist makes 35 units and charges $65 — a $35 markup over cost. That output is exactly half the competitive 70, and the shaded triangle (613) is the welfare lost to that restraint.

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About this simulation

The full Monopoly Pricing tool models a Cournot duopoly with the same numerics engineers and scientists use — running entirely client-side. Change any parameter and the result updates in real time, so you can build intuition, check a design, or teach the concept without spreadsheets or installs.

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Other ways to simulate a Cournot duopoly

Supply & Demand for a Cournot duopoly Price Elasticity for a Cournot duopoly Cobb-Douglas for a Cournot duopoly Lorenz & Gini for a Cournot duopoly Laffer Curve for a Cournot duopoly Comparative Advantage for a Cournot duopoly

Frequently asked questions

How do I simulate a Cournot duopoly?: Open this page and use the live Monopoly Pricing tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.
Is it free?: Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.
Can I use my own numbers?: Absolutely — every input is adjustable, and with data import you can drive a Cournot duopoly from your own measurements.