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TwoHeads

Paid

★ 1 • Updated Jul 10, 2026, 09:12 AM

Use Cases ▼

Salary negotiation analysis

Startup investment evaluation

Major purchase decisions (e.g., home, car)

Career path selection

Project prioritization and resource allocation

Risk assessment for business strategies

What Problem It Solves ▼

Many decisions involve trade-offs, uncertainty, and multiple possible outcomes, making it difficult to evaluate objectively. TwoHeads addresses this by providing a systematic, AI-assisted framework to map out decisions, quantify uncertainties with evidence-based probabilities, and compute expected value, enabling users to make more informed choices.

Key Features ▼

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Free tier with no account required

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AI-powered probability estimates with cited analogues

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Live expected value calculation with adjustable probabilities

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Scenario comparison for side-by-side analysis

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Simple, no-templates interface

Overview

TwoHeads is a web-based decision analysis tool that leverages AI to help users make complex decisions by structuring them into decision trees with estimated probabilities and expected value calculations. Users describe any decision in plain language, and the AI (Claude) extracts decision nodes, chance events, and outcomes, assigning probabilities based on real-world analogues and base rates. The tool provides a live decision tree interface where users can adjust probability sliders and instantly see the recalculated expected value for each branch. Each probability estimate includes a cited rationale, and the platform highlights key risk factors and upside levers across branches. Users can save multiple analyses and compare them side by side to identify the path with the highest expected value. TwoHeads offers a free tier with one analysis per day and full functionality, while paid plans increase the number of daily analyses and add features like PDF export. The service requires no account for single analyses, and decisions are processed locally in the browser unless the user signs in. It is designed as a structured thinking aid, not a substitute for professional financial or legal advice.