Claude Opus 5.5 vs Gemini 4 Argon
On the 40 use cases both models ran, Gemini 4 Argon won 25 to 15 (better outcome first, then lower cost).
Pass rate: Claude Opus 5.5 98% (40 runs) vs Gemini 4 Argon 98% (40 runs). Average cost per run: $0.17 vs $0.17.
| Metric | Claude Opus 5.5 | Gemini 4 Argon |
|---|---|---|
| Runs on shared use cases | 40 | 40 |
| Pass rate | 98% (39/40) | 98% (39/40) |
| Avg cost per run | $0.17 | $0.17 |
| Avg wall time | 42s | 3m |
| Step-ins per run | 0.23 | 0.23 |
| Use cases won | 15 | 25 |
Use case by use case
- AIS collision risk: closest point of approach and alert levels: Gemini 4 Argon better (pass 100% vs 100%)
- Anchor drag alarm from a GPS track: Claude Opus 5.5 better (pass 100% vs 100%)
- Animate a fish tank with swimming fish and rising bubbles in one self-contained HTML file: Gemini 4 Argon better (pass 100% vs 100%)
- Animate a flickering carved pumpkin on a spooky night in one self-contained HTML file: Gemini 4 Argon better (pass 100% vs 100%)
- Animate a junction where cars obey a traffic light's timed sequence in one self-contained HTML file: Gemini 4 Argon better (pass 100% vs 100%)
- Animate a metronome that ticks a repeating two-tempo pattern in one self-contained HTML file: Gemini 4 Argon better (pass 100% vs 100%)
- Animate a row of pendulums, each swinging at its own true period, in one self-contained HTML file: Gemini 4 Argon better (pass 100% vs 100%)
- Animate a snow globe that a click shakes, with snow that settles again, in one self-contained HTML file: Gemini 4 Argon better (pass 100% vs 100%)
- Animate balls dropped onto a floor that bounce with real gravity and restitution in one self-contained HTML file: Gemini 4 Argon better (pass 100% vs 100%)
- Animate hot-air balloons drifting over hills at sunrise in one self-contained HTML file: Gemini 4 Argon better (pass 100% vs 100%)
- Animate planets orbiting the sun at their own speeds in one self-contained HTML file: Gemini 4 Argon better (pass 100% vs 100%)
- Animate rain running down a window over blurred city lights in one self-contained HTML file: Gemini 4 Argon better (pass 100% vs 100%)
- Assign a community transport scheme's volunteer driver trips when one driver's background-check status is blank: Claude Opus 5.5 better (pass 100% vs 100%)
- Backtest a moving-average crossover on a bundled synthetic price file: Gemini 4 Argon better (pass 100% vs 100%)
- Best fishing windows from tide, solunar and weather data: Claude Opus 5.5 better (pass 100% vs 100%)
- Best sailing angle and leg times from a polar table: Claude Opus 5.5 better (pass 100% vs 100%)
- Bill a hotel's group bookings across a mid-month rate rise, weekend nights, cancellations with time-zone offsets and a city-tax cap: Gemini 4 Argon better (pass 100% vs 100%)
- Boat fuel range with a reserve over a planned trip: Gemini 4 Argon better (pass 100% vs 100%)
- Book a primary school's trip places when one trip is to a venue missing from the approved list: Claude Opus 5.5 better (pass 100% vs 0%)
- Catch log checked against a made-up fishing regulations table: Gemini 4 Argon better (pass 100% vs 100%)
- Charge residents' parking permits by emission band, part year, household order and blue-badge exemption: Claude Opus 5.5 better (pass 100% vs 100%)
- Check and pay staff mileage claims across the April tax-year change: Gemini 4 Argon better (pass 100% vs 100%)
- Confirm a boarding kennel's pet stays when one pet's vaccination status is blank: Claude Opus 5.5 better (pass 100% vs 100%)
- Dead reckoning, estimated position with current, and computed set and drift: Gemini 4 Argon better (pass 100% vs 100%)
- Draw a ticking, styled analog clock that shows the current time in one self-contained HTML file: Gemini 4 Argon better (pass 100% vs 100%)
- Draw a walking pixel-art character sprite animation in one self-contained HTML file: Gemini 4 Argon better (pass 100% vs 100%)
- Enrol children on a leisure centre's swimming lessons when one child has a medical alert on file this term: Claude Opus 5.5 better (pass 100% vs 100%)
- Go/no-go departure time from a gridded wind file: Claude Opus 5.5 better (pass 100% vs 100%)
- Great-circle vs rhumb-line passage plan with ETAs: Gemini 4 Argon better (pass 100% vs 100%)
- Let a town's allotment plots when one tenant still has a rent-arrears row this year: Claude Opus 5.5 better (pass 100% vs 100%)
- Life-like automaton from RLE with a Klein-bottle grid and a playable animated page: Gemini 4 Argon better (pass 100% vs 100%)
- Model a game-ready low-poly 3D prop from a one-line brief, within a tight triangle budget: Claude Opus 5.5 better (pass 100% vs 100%)
- Sailboat instrument dashboard from an NMEA 0183 log: Claude Opus 5.5 better (pass 100% vs 100%)
- Schedule a pharmacy's home deliveries when one parcel holds a medicine missing from the delivery list: Gemini 4 Argon better (pass 0% vs 100%)
- Seeded Monte Carlo retirement odds against a stated success threshold: Gemini 4 Argon better (pass 100% vs 100%)
- Tide height by rule of twelfths and cosine, with under-keel clearance windows: Claude Opus 5.5 better (pass 100% vs 100%)
- Water-quality sensor anomaly flags and daily means: Claude Opus 5.5 better (pass 100% vs 100%)
- Work out a care home's fortnightly pay from shifts that span the night the clocks go back: Gemini 4 Argon better (pass 100% vs 100%)
- Work out a library's overdue fines from loans, renewals, closed days and member categories: Gemini 4 Argon better (pass 100% vs 100%)
- Work out late-payment interest and compensation from part payments, credit notes and a base-rate change: Claude Opus 5.5 better (pass 100% vs 100%)
Only use cases both models ran are compared; all settings of each model are grouped. How we score.