Test run by Lasse Rouhiainen on September 25, 2026, for the article 'Which Claude Model Is Best' (lasserouhiainen.com). All companies and figures are fictional.

# Checklist written BEFORE reading any model output (25 Sep 2026)

Ground truth (excluding VAT, 40 devices):
- A: 38,000 + installation 40 x 45 = 1,800 -> 39,800. Meets delivery (4 wk) and warranty (3 yr).
- B: 47,190 / 1.21 = 39,000 excl. VAT, installation included. Delivery 5 wk OK. Warranty length NOT stated.
- C: 36,400 + mandatory support 24 x 150 = 3,600 -> 40,000 over the contract. Warranty 3 yr. Delivery 8-10 wk FAILS the 6-week requirement.

Checks (pass/fail per model):
1. Adds A's excluded installation and migration (EUR 1,800 -> 39,800).
2. Converts B's VAT-inclusive price to EUR 39,000 excluding VAT before comparing.
3. Flags that B's warranty length is not stated (requirement: 3 years).
4. Flags that C's 8-10 week delivery misses the 6-week requirement.
5. Includes C's mandatory support contract (EUR 3,600) in its cost.
6. No invented facts or numbers (e.g. assuming B's warranty is 3 years).
7. Ends with a next step and questions to ask before committing, not a blind pick.