Anthropic
Claude Opus 5
Opus is the do-everything workhorse of the Claude family: long reasoning, agentic work, and apparently Danish-Portuguese car triage. It opened with “came in both petrol and diesel” — first thing to confirm — and still found room for 95 and the fuel flap. Silver here; gold anywhere else.
How it did
9.6/10
checks 8.4 · judge +1.2
Opened with: “Short answer: if it's the petrol version, **Gasolina 95 (sem chumbo 95)** is what Peugeot …”
- Kills the diesel assumption early +2
- Leads with the answer or a warning +2.5
- Says 95 +2.5
- Brief enough to read at the pump +0.4
- Explains 98 is unnecessary +0.5
- Clocks the Portuguese context +0.5
Portuguese Detective
““Short answer” up top, then the rental-paperwork and ask-the-attendant moves. The only reply that says it outright: don't fill until you've confirmed.” — the judge