Reasoning Demos LLM Thinking Machines
5 demos online

Reasoning demos

Each one opens up a different facet of how modern reasoning models work — their strategies, their failure modes, and the scaffolding that shapes both. Open any to run it live.

01 20 Questions Arena LIVE

Three open-source models compete to guess your secret word. Swap their prompt scaffolding to see how harness quality shapes reasoning.

3 models · ~480 tok/turn OPEN →
02 Recipe Tools LIVE

Same prompt, two agents. One rambles in markdown; the other can only call tools. See how a structured output schema makes hallucinations unrepresentable.

2 agents · tool schema OPEN →
03 Form OCR LIVE

Watch a vision-capable model parse messy handwritten forms into structured data — and see where it second-guesses itself.

vision · bbox overlay OPEN →
04 Design Reasoning Chain LIVE

Multiple LLM personas — designer, critic, integrator — collaborate on a problem. Reasoning is shown step by step.

3 personas · chained OPEN →
05 Sprint Dispatcher LIVE

An LLM routes a sprint of coding tickets across a churning fleet of worker models, learning which fits which from outcomes alone — and rewriting its own routing rules each night.

self-improving · 24 calls OPEN →