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READING №00001 · MMXXVI
chances.ai
it will calculate everything
just type in your thought, powered by probability ai

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Keys live in your browser's localStorage. Browser extensions and shared-device users can read this — clear before lending your laptop.

What is Chances.ai?

Chances.ai is a free AI probability calculator. Type any question, decision, or scenario — from “Will it rain this weekend?” to “Should I take the new job offer?” — and it returns a clear probability percentage with the reasoning behind it. Think of it as an odds estimator for everyday decisions and “what are the chances” questions.

How it works

  1. Ask anything. Type a thought, decision, or “what are the odds” question.
  2. Get a percentage. The probability engine returns a confident estimate, its reasoning, and the key factors behind it.
  3. Track your calls. Save your readings and see how well-calibrated the estimates were over time.

Frequently asked questions

Is Chances.ai free?

Yes. Chances.ai is free to use — you bring your own free Google Gemini API key.

What kind of questions can I ask?

Anything you can frame as an outcome: decisions, predictions, relationships, weather, money, projects, or any “what are the chances of X” question.

How accurate are the probabilities?

Estimates are reasoned, not guaranteed. Chances.ai is a thinking tool to help you weigh odds — not a substitute for professional medical, legal, or financial advice.

Do I need an account?

No. You can use Chances.ai anonymously. An optional account keeps your reading history across visits.

Is my data private?

Your readings stay in your browser, and your API key is sent only to Google. Questions are logged anonymously to improve the product and are never shared.

Reading the tea leaves…

Past Readings

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Calibration

Your track record

How well-tuned this oracle has been for the questions you have asked. Lower Brier score is better; dots that ride the diagonal indicate perfect calibration.

Brier score

Resolve some past readings to start measuring your calibration.

0
resolved
0
pending
0
total

Calibration plot

Each dot is a probability bucket: x is what the oracle said, y is how often those predictions came true. A well-calibrated oracle's dots sit on the diagonal.

Plans

Pricing

The number, the reasoning, the calibration — free, always. Premium is a one-time unlock for unlimited history, sharing, and exporting.

Free$0/forever

Everything you need to ask, read, and track. No card required.

  • Unlimited readings (BYOK Gemini)
  • Reasoning, factors, outcome spectrum
  • Last 100 readings saved locally
  • Personal calibration tracking
  • · No cloud sync across devices
  • · No public calibration page

contextual reading

Reasoning
Contributing Factors
Outcome Spectrum

What if you changed...