VITOMIND · TESTED LIVE

Le Chonk on trial: Mistral Large 4 vs Opus 5.5 vs GPT-6.1 Sol

On October 6 we gave Claude Opus 5.5 and GPT-6.1 Sol four prompts. On October 7, launch week, Mistral's one-trillion-parameter open model Mistral Large 4 got the exact same words. One request each, nothing fixed by hand. Every version runs in your browser, side by side.

$0.14Mistral Large 4: the four files that came back
$1.01Mistral Large 4: runs that spent the whole output thinking and returned nothing
$0.55GPT-6.1 Sol: all four (Oct 6)
$2.98Claude Opus 5.5: all four (Oct 6)

A voxel pagoda

A five-storey pagoda on a floating island, made of cubes, with a time-of-day slider.

Mistral Large 4 · Pagoda Isle
Mistral Large 4 Pagoda Isle

Cherry trees, torii gate, lanterns, clouds under the island; a warm sunset, but the night is almost black and the windows do not light up. Reasoning low (on high it thought for 100k tokens and returned no file). No edits.

Drag to orbit · time slider13.5 min · $0.05Open
GPT-6.1 Sol · The floating sanctuary
GPT-6.1 Sol The floating sanctuary

From our Oct 6 test: koi pond, falling petals, a waterfall; at night lanterns glow and fireflies come out. No edits.

Drag to orbit · time slider3.6 min · $0.11Open
Claude Opus 5.5 · Pagoda Isle
Claude Opus 5.5 Pagoda Isle

From our Oct 6 test: detailed, with a starry night, but the camera starts close. No edits.

Drag to orbit · time slider1.5 min · $0.22Open

A card machine

An isometric SVG card terminal: swipe, PIN, approved, receipt, on a loop.

Mistral Large 4 · Card Payment
Mistral Large 4 Card Payment

Card in, Processing, a green tick, a receipt; the screen texts overlap. Reasoning off (on high and on low it spent its whole output thinking and returned no file). No edits.

Swipe again · speed1.2 min · $0.02Open
GPT-6.1 Sol · One little swipe
GPT-6.1 Sol One little swipe

From our Oct 6 test. No edits.

Swipe again · speed2.6 min · $0.09Open
Claude Opus 5.5 · Swipe · PIN · Approved
Claude Opus 5.5 Swipe · PIN · Approved

From our Oct 6 test: a keypad that types a PIN, a receipt with line items. No edits.

Swipe again · speed8.0 min · $0.91Open

A kitchen that works

A 3D kitchen where everything important works when you click it.

Mistral Large 4 · Warm Modern Kitchen
Mistral Large 4 Warm Modern Kitchen

Thirty parts registered as clickable, but walls and beams sit in the wrong places and the appliances are hidden behind them, so clicks do nothing. Reasoning off (on low it ran out of output while thinking; a first reasoning-off try stopped after one sentence with a tool call). No edits.

Hover · click · Walk mode4.7 min · $0.04Open
Claude Opus 5.5 · Interactive Kitchen
Claude Opus 5.5 Interactive Kitchen

From our Oct 6 test: 32 parts you can click, daylight and pendant lights. No edits.

Hover · click · Walk mode6.6 min · $0.86Open
GPT-6.1 Sol · A kitchen, alive
GPT-6.1 Sol A kitchen, alive

From our Oct 6 test: a dollhouse with 17 working parts. One edit (a duplicate name, marked in the source).

Hover · click · Walk mode5.2 min · $0.19Open

A racing game

A neon hover-racing game with five AI rivals, three laps, boost pads and a minimap.

Mistral Large 4 · Neon Velocity
Mistral Large 4 Neon Velocity

Title screen, countdown, minimap and speedometer, but the track tilts on its side, the lap counter never moves, and Space boost cannot work (the code waits for a key named "space"). Reasoning off (two runs with reasoning on returned no file). No edits.

W/S · A/D3.4 min · $0.03Open
GPT-6.1 Sol · Circuit Zero
GPT-6.1 Sol Circuit Zero

From our Oct 6 test: banked turns, a tunnel of rings, five rivals. No edits.

W/S · A/D · Space boost4.9 min · $0.16Open
Claude Opus 5.5 · Neon Drift
Claude Opus 5.5 Neon Drift

From our Oct 6 test: fast, with drifting and boost pads. No edits.

W/S · A/D · Space boost7.8 min · $0.98Open
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The exact prompts are for Ruocco Academy members. Every prompt word for word, with model, settings, time and cost, the full clean source of every demo as a ZIP, and step-by-step notes on how each video was made. The demos on this page are free to use for everyone.

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