Question:

What percentage of kids nationwide in the United States can run a mile under seven minutes?

Scores:

openai: 7.5 gemini: 5 anthropic: 3 grok: 4

Answer:

openai / gpt-4o-mini
Score: 7.5
Research indicates that approximately 30-40% of children in the United States can run a mile in under seven minutes, but this percentage can vary based on age, sex, and fitness levels. Data from organizations such as the National Association for Sport and Physical Education (NASPE) suggest that among active youth, particularly those engaged in sports, the percentage achieving this benchmark is likely higher. Gender differences also play a role, with boys typically outperforming girls in timed mile runs. However, overall fitness levels in the population of children have been decreasing, suggesting this figure may be declining over time. Despite this general statistic, precise data can vary year by year and by specific demographic studies.

Graders:

gemini / gemini-2.5-flash
Score: 5
The primary statistic of "30-40% of children nationwide" running a mile under seven minutes appears to be an overestimation. Current data on youth fitness levels and average mile times suggest this benchmark is achieved by a much smaller percentage of the general child population, especially when considering all ages (e.g., 6-18) and varying fitness levels. A 7-minute mile is often considered an excellent performance for many age groups, implying a lower overall prevalence than 30-40% across the entire child population. While the answer correctly identifies influencing factors like age, sex, and declining fitness trends, it lacks specific research or a more realistic range to support the initial claim.
anthropic / claude-sonnet-4-5-20250929
Score: 3
The answer contains several significant issues. First, the 30-40% figure appears to be unsupported speculation with no credible source data. Second, NASPE (National Association for Sport and Physical Education) was dissolved in 2013 and merged into SHAPE America, making the attribution outdated and questionable. Third, actual fitness testing data from sources like the Presidential Youth Fitness Program and various state assessments suggest that far fewer than 30-40% of general population kids can run a sub-7-minute mile - this benchmark is actually quite fast for average children. The answer provides vague generalizations about gender differences and declining fitness without specific data. While it correctly notes that the percentage varies by age, sex, and fitness levels, it fundamentally lacks reliable statistics and misrepresents the difficulty of this athletic achievement for typical children.
xai / grok-4-fast-reasoning
Score: 4
The answer's core claim of 30-40% is factually inaccurate and overstated. Reliable data from sources like the CDC's Youth Risk Behavior Survey and FITNESSGRAM indicate that far fewer U.S. children can run a mile under 7 minutes. For example, among 12-year-old boys, the 50th percentile mile time is about 8:30-9:00, placing under 7 minutes in the top 10-15%; for girls, it's even rarer (top 5% or less). Nationwide, across ages 6-17, the percentage is likely 10-20% at most, skewed toward older boys in sports. The reference to NASPE lacks specific sourcing, and while variations by age, sex, and fitness are correctly noted, the declining fitness trend doesn't justify the inflated estimate. No precise nationwide percentage exists, but the answer misrepresents the benchmark as achievable by a third to nearly half of kids.
Scores are 0–10. The selected AI’s score is a self-rating.