VITOMIND · TESTED LIVE

Does more thinking pay? Opus 5.5 low vs high vs max, and Gemini 4 Argon

Three builds of the kind people posted for Gemini 4 Carbon this week: a robotic eye that explodes into its parts, a mechanical flower and a luxury kitchen. Same prompt, word for word, to Claude Opus 5.5 at reasoning effort low, high and max, and to Gemini 4 Argon (the model you can buy at Carbon's price today) at effort high. One run each. Everything runs in your browser.

How it was run. One single request per build through OpenRouter, on October 29, 2026: the prompt plus one line we add to every test (one self-contained HTML file, Three.js from a public CDN, no images). No agent, no tools, no second try. At effort max, Opus 5.5 spent the whole 128,000-token output limit thinking, three times out of three, and never started the answer: those cards open a page with the numbers and the last lines of its reasoning.

Robotic eye

A mechanical eyeball in a metal socket: blink, focus, then an exploded view of every part, and reassemble.

Claude Opus 5.5 · effort low · Correct, not beautiful
Claude Opus 5.5 · effort low Correct, not beautiful

No thinking at all at low effort. Blink, focus and explode work, every part labelled, but it is a white ball and a few rings with overlapping labels.

Blink · Focus · Explode · Reassemble54 s · $0.14Open
Claude Opus 5.5 · effort high · IRIS-9, the polished one
Claude Opus 5.5 · effort high IRIS-9, the polished one

Chrome, reflections and a glowing lens; metal eyelids close, the lens drives forward, and the exploded view has clean labels and leader lines.

Blink · Focus · Explode · Reassemble16.2 min · $2.02Open
Claude Opus 5.5 · effort max · No code: thought until the limit
Claude Opus 5.5 · effort max No code: thought until the limit

21.6 min of thinking, 128,000 thinking tokens, then the 128k output limit. Zero lines of code.

empty answer21.6 min · $2.56Empty
Gemini 4 Argon · effort high · OCULAR-IX, the technical one
Gemini 4 Argon · effort high OCULAR-IX, the technical one

A status panel, 17 numbered parts, and an automatic demo that blinks, focuses and explodes the eye by itself when the page opens.

Blink · Focus · Explode · Reassemble6.6 min · $0.33Open

Mechanical flower

A clockwork bloom of brass and copper petals: press Bloom, watch the gears work, X-ray to see inside.

Claude Opus 5.5 · effort low · Small clockwork bloom
Claude Opus 5.5 · effort low Small clockwork bloom

The petals open and the X-ray switch works, but the flower is small and the gears are barely there.

Bloom · Close · X-ray1.1 min · $0.16Open
Claude Opus 5.5 · effort high · Clockwork Bloom
Claude Opus 5.5 · effort high Clockwork Bloom

A closed bud that unfolds petal by petal while the core glows; X-ray shows the gears inside; it even added a sound button.

Bloom · Close · X-ray · Sound13.6 min · $1.74Open
Claude Opus 5.5 · effort max · No code: thought until the limit
Claude Opus 5.5 · effort max No code: thought until the limit

20.9 min of thinking, 128,000 thinking tokens, then the 128k output limit. Zero lines of code.

empty answer20.9 min · $2.56Empty
Gemini 4 Argon · effort high · All gold and light
Gemini 4 Argon · effort high All gold and light

A golden mechanical bloom on a jointed stem; it blooms, closes and has an X-ray view.

Bloom · Close · X-ray5.4 min · $0.28Open

Luxury kitchen

Marble island, dark wood, brass, pendant lights and glass shelves: water, cabinets, dimmer and a camera tour.

Claude Opus 5.5 · effort low · A sketch of a kitchen
Claude Opus 5.5 · effort low A sketch of a kitchen

Island, cabinets, pendant lights and a sunset window; the light slider works. Correct, but far from luxury.

drag · lights · water · tour1.6 min · $0.25Open
Claude Opus 5.5 · effort high · Maison Noire
Claude Opus 5.5 · effort high Maison Noire

Dark wood, veined marble, brass and a warm window; cabinets open on click and the slider dims the pendants.

drag · lights · water · cabinets · tour16.6 min · $2.14Open
Claude Opus 5.5 · effort max · No code: thought until the limit
Claude Opus 5.5 · effort max No code: thought until the limit

21.9 min of thinking, 128,000 thinking tokens, then the 128k output limit. Zero lines of code.

empty answer21.9 min · $2.56Empty
Gemini 4 Argon · effort high · Atelier Nocturne
Gemini 4 Argon · effort high Atelier Nocturne

The richest kitchen of the test: big sunset windows, glass shelves full of bottles, a pot rack; the lights dim with the slider.

drag · lights · water · cabinets · tour4.9 min · $0.31Open

Time, tokens and cost

Cost = what OpenRouter charged. Thinking tokens are billed like output tokens even though you never see them.

Model · effortBuildTimeOutput tokensof which thinkingCostCode returned
Claude Opus 5.5 · effort lowall three3.6 min27,308$0.553 of 3 files
Claude Opus 5.5 · effort highall three46.4 min294,753$5.903 of 3 files
Claude Opus 5.5 · effort maxall three64.4 min384,000$7.680 of 3 files
Gemini 4 Argon · effort highall three17.0 min91,668$0.923 of 3 files
Claude Opus 5.5 · effort lowRobotic eye54 s6,8380$0.14yes
Claude Opus 5.5 · effort highRobotic eye16.2 min100,77281,154$2.02yes
Claude Opus 5.5 · effort maxRobotic eye21.6 min128,000128,000$2.56none (empty)
Gemini 4 Argon · effort highRobotic eye6.6 min33,3427,624$0.33yes
Claude Opus 5.5 · effort lowMechanical flower1.1 min7,9730$0.16yes
Claude Opus 5.5 · effort highMechanical flower13.6 min86,91764,150$1.74yes
Claude Opus 5.5 · effort maxMechanical flower20.9 min128,000128,000$2.56none (empty)
Gemini 4 Argon · effort highMechanical flower5.4 min27,4793,390$0.28yes
Claude Opus 5.5 · effort lowLuxury kitchen1.6 min12,4970$0.25yes
Claude Opus 5.5 · effort highLuxury kitchen16.6 min107,06478,014$2.14yes
Claude Opus 5.5 · effort maxLuxury kitchen21.9 min128,000128,000$2.56none (empty)
Gemini 4 Argon · effort highLuxury kitchen4.9 min30,8473,403$0.31yes
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