A tool for thinking better.

Break down a problem, model how the pieces connect, and reason through the assumptions behind your decision.

Free credits while in open beta.
No credit card required.

1 of 3.

How large could the philanthropic windfall from the OpenAI and Anthropic IPOs be?

Timing
Equity
Giving %
Potential philanthropic capital$60.6B
$0$74B$148B

How large could the philanthropic windfall from the OpenAI and Anthropic IPOs be?

Timing
Equity
Giving %
Potential philanthropic capital$60.6B
$0$74B$148B
Build your own model
2 of 3.

Will my startup reach product-market fit within 18 months?

73%chance
Product-market fit
Runway
Market demand
User growth
Retention

Will my startup reach product-market fit within 18 months?

73%chance
Product-market fit
Runway
Market demand
User growth
Retention
Build your own model
3 of 3.

What share of global electricity will data centers consume by 2030?

New generation and nuclear
AI compute growth
Data center share of global electricity8.5%
2%9%15%
Grid bottlenecks
Chip efficiency
Regulations

What share of global electricity will data centers consume by 2030?

New generation and nuclear
AI compute growth
Data center share of global electricity8.5%
2%9%15%
Grid bottlenecks
Chip efficiency
Regulations
Build your own model

See what your strategy depends on.

Radiant, a tool from Metaculus, is a reasoning map that stays current as the world changes. Break a strategy into forecasts, connect them, and identify the assumptions that matter most. See where your team disagrees and what would change your course.

Start with a question or decision. AI turns it into a map of assumptions you can inspect, challenge, and trace to their sources.

What Radiant does

Connect the pieces

Describe how one thing relates to another, or formalize it as a formula when you want more rigor.

Build it together

Add predictions to the same map as your team and see exactly where you disagree.

Get help from AI

Surface the drivers behind an outcome, and pull outside forecasts from Metaculus when relevant.

As flexible as a whiteboard, as powerful as a spreadsheet

A spreadsheet makes you pick one number. Radiant lets you say “somewhere between 15 and 40, probably around 22” and propagates that uncertainty forward. Sketch a rough model in minutes or construct one you’d put in front of a funder.

CodexClaude Code

Bring your own AI agent

Your agent reads the map, adds nodes, runs a sensitivity analysis, and writes the changes back. No copying context by hand. Over MCP, your agent brings its own context with it: your files, your notes, your data.

Radiant is in open beta.

Start on your own, or bring us a real decision and we’ll map it with you.

Free credits while in open beta.
No credit card required.

Radiant was developed with support from ARIA UK and the Foresight Institute.