9 October 2026 / Tested in the browser

From AI headline
to something real.

Two models. The same racer and garden prompts. Plus two apps you can actually use. Explore every result yourself, with measured generation time and cost.

Try all six demos ↓

Four original AI demos running in a browser

What these runs actually cost

gpt-6.1-sol · Racer$0.1350301s generation · browser checks passed

step-5-preview · Racer$0.23791503s generation · browser checks passed

gpt-6.1-sol · Garden$0.1634287s generation · browser checks passed

step-5-preview · Garden$0.25311810s generation · browser checks passed

gpt-6.1-sol · Dashboard$0.0940173s generation · browser checks passed

gpt-6.1-sol · Motion$0.1004174s generation · browser checks passed

Original runs and disclosed retries through OpenRouter on 9 October 2026; initial medium reasoning, with changed retry settings disclosed on the cards. Billed generation cost, excluding voice, review and hosting. Same task prompts for each compared pair. This is a small practical test, not a general model ranking. Any production edits are disclosed on the cards.

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Pick something to try.

Neon Ridge · GPT-6.1 Sol

A playable hovercraft racer. Accelerate, steer, boost, pass checkpoints and restart.

0.1350 USD API 301s generation

Browser-tested. No code edits after generation.

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Neon Ridge · Step-5 Preview

A playable hovercraft racer. Accelerate, steer, boost, pass checkpoints and restart.

0.2379 USD API 1503s generation

Browser-tested. Production fixes: Corrected the rail clamp so it keeps the ship on the same road edge without rewinding forward movement.; Added a short obstacle-hit cooldown, reset each race, to avoid repeated damage on consecutive frames.; Updated the visible state panel while racing so its state and counters follow the live game. Initial medium/32k attempt reached the output limit; same prompt retried with low reasoning/64k. Cost and generation time include failed attempts.

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Sakura Courtyard · GPT-6.1 Sol

Explore a detailed voxel garden, orbit the camera and change the lighting.

0.1634 USD API 287s generation

Browser-tested. No code edits after generation.

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Sakura Courtyard · Step-5 Preview

Explore a detailed voxel garden, orbit the camera and change the lighting.

0.2531 USD API 1810s generation

Browser-tested. Production fixes: Fixed pond-ground initialization by passing path points to the Three.js Shape constructor.; Removed an assignment to a getter-only readiness property and made status fields enumerable for browser verification. Initial medium/32k attempt reached the output limit; same prompt retried with low reasoning/64k. Cost and generation time include failed attempts.

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