Question:

How many hours difference between Paris and Los Angeles?

Scores:

openai: 9 gemini: 4 groq: 9.5 cohere: 9

Answer:

openai / gpt-4o-mini
Score: 9
Paris is typically 9 hours ahead of Los Angeles. However, this difference can change to 8 hours during daylight saving time in Los Angeles, usually from March to November.

Graders:

gemini / gemini-2.5-flash
Score: 4
The answer correctly states Paris is typically 9 hours ahead. However, the explanation for the 8-hour difference is largely incorrect. The 8-hour difference only occurs for about one week (late Oct/early Nov) when Los Angeles is in DST but Paris has reverted to standard time. For most of Los Angeles's DST period (March-November), Paris is also in DST, maintaining a 9-hour difference. The answer also misses a brief 10-hour difference period (approx. 1 week in March) when Paris is in DST before Los Angeles.
groq / llama-3.1-8b-instant
Score: 9.5
The answer is mostly accurate, but it lacks specific details about the time zone of Paris (Central European Time, or CET) and Los Angeles (Pacific Standard Time, or PST/PDT). It also assumes that Los Angeles always follows the DST schedule, which might not be the case in future years. A more precise answer would be: Paris is typically 9 hours ahead of Los Angeles during standard time, but 8 hours ahead during Los Angeles' daylight saving time (March to November).
cohere / command-r-plus-08-2024
Score: 9
The answer is mostly correct, but it could be more precise. The time difference between Paris and Los Angeles is generally 9 hours, but this is not a fixed value. The actual difference can vary depending on the time of year due to daylight saving time adjustments. In the winter, when daylight saving time is not in effect in Los Angeles, the time difference is indeed 9 hours. However, during the period when Los Angeles observes daylight saving time, the time difference decreases to 8 hours. This period typically starts in March and ends in November, but the exact dates can vary from year to year.
Scores are 0–10. The selected AI’s score is a self-rating.