Claude Opus 4.8 vs GPT-5.5 for everyday maths

# UK Full-Time Working Hours Estimate

**Estimate: roughly 1,700–1,800 hours per year**

## The calculation

Starting point: 52 weeks × 37.5 hours/week = 1,950 hours (gross)

Then subtract time off:
- Annual leave: ~28 days (statutory minimum, often including bank holidays)
- That's roughly 5.6 weeks off

**52 − 5.6 = ~46.4 working weeks × 37.5 hours ≈ 1,740 hours**

## The 2–3 assumptions this rests on

1. **Weekly hours = 37.5** — assuming a standard "9-to-5 with lunch" (7.5 paid hours/day). Many UK contracts use 35, 37, or 40 hours.

2. **Ho…

Rough estimate: **about 1,700 working hours per year** for a UK full-time employee.

Calculation:

\[
(52 \text{ weeks} - 6.6 \text{ weeks off}) \times 37.5 \text{ hours/week}
= 45.4 \times 37.5
\approx 1,700 \text{ hours}
\]

Assumptions:

1. **Full-time week = 37.5 hours**  
   Common UK office pattern: 7.5 hours/day × 5 days.

2. **Holiday = 25 days annual leave + 8 bank holidays**  
   That is **33 days**, or **6.6 working weeks** off.

3. **No adjustment for sickness, overtime, training, or unpaid leave**  
   This is scheduled working tim…