Reasoning · 1 checks · max 800 tokens · benched 2026-11-05
Meta models side by side on "When does the faster train catch up?": Muse Glimmer 30B scores 10/10; Muse Glimmer 30B is the cheapest answer scoring 8+ at $0.26 per 1,000 runs. Outputs, checks, judge reasons, latency and cost.
System
Think carefully, then give only the final answer in the requested format.
User
Train A leaves a station at 09:10 travelling at a constant 80 km/h. Train B leaves the same station on the same track at 09:40 travelling at a constant 120 km/h in the same direction. How many minutes after 09:10 does train B catch up with train A? Reply with only the whole number of minutes.
Rubric for the judge: The single correct answer 90, with no working shown in the final output.
Every cell is one OpenRouter call at temperature 0 with the prompt's token cap and reasoning effort "low" where the model supports it. Cost is usage × the catalogue rate in models.json. Quality is one judge call to anthropic/claude-haiku-4.5 against the prompt's rubric, cached per prompt version.
meta/muse-spark-1.3
112 in · 308 out (284 reasoning) · 1 words · checks 1/1
90
Judge: The output is exactly '90' with no extraneous commentary, matching the rubric requirement perfectly.
meta/muse-glimmer-30b
115 in · 208 out (201 reasoning) · 1 words · checks 1/1
90
Judge: The output is exactly '90' with no extraneous commentary, matching the rubric requirement perfectly.
meta-llama/llama-4-maverick
102 in · 348 out · 253 words · checks 0/1
## Step 1: Calculate the distance train A has traveled by the time train B leaves the station.
Train A leaves at 09:10 and travels at 80 km/h. By 09:40, it has been traveling for 30 minutes, which is 0.5 hours. Distance = speed * time = 80 km/h * 0.5 h = 40 km.
## Step 2: Determine the relative speed between train A and train B.
Train A is traveling at 80 km/h and train B is traveling at 120 km/h. The relative speed of train B to train A is 120 km/h - 80 km/h = 40 km/h.
## Step 3: Calculate the time it takes for train B to catch up with train A after train B leaves the station.
Since train A is 40 km ahead when train B starts, and train B is catching up at a rate of 40 km/h, the time taken to catch up is distance / relative speed = 40 km / 40 km/h = 1 hour.
## Step 4: Convert the time taken for train B to catch up with train A into minutes.
1 hour = 60 minutes.
## Step 5: Calculate the total time elapsed from 09:10 until train B catches up with train A.
Train B leaves at 09:40, so it takes 60 minutes after 09:40 for train B to catch up with train A. The total time elapsed from 09:10 is 30 minutes (from 09:10 to 09:40) + 60 minutes = 90 minutes.
The final answer is: $\boxed{90}$Judge: The output provides the correct answer of 90, but violates the rubric requirement of 'no working shown in the final output' by including extensive step-by-step calculations and explanations.
meta-llama/llama-4-scout
102 in · 311 out · 224 words · checks 0/1
## Step 1: Calculate the distance Train A travels before Train B starts
Train A travels for 30 minutes before Train B starts. First, convert 30 minutes to hours: 30 minutes = 0.5 hours. Distance = speed * time = 80 km/h * 0.5 h = 40 km.
## 2: Calculate the relative speed of Train B to Train A
The relative speed of Train B to Train A is the difference in their speeds because they are moving in the same direction. Relative speed = 120 km/h - 80 km/h = 40 km/h.
## 3: Calculate the time it takes for Train B to catch up with Train A
Time = distance / relative speed. Using the distance from step 1 and the relative speed from step 2: Time = 40 km / 40 km/h = 1 hour.
## 4: Convert the time it takes for Train B to catch up with Train A into minutes and add to the initial 09:10
1 hour = 60 minutes. So, Train B catches up with Train A 60 minutes after 09:40. But we need the time after 09:10. From 09:10 to 09:40 is 30 minutes. So, the total time after 09:10 is 30 minutes (before Train B starts) + 60 minutes (for Train B to catch up) = 90 minutes.
The final answer is: $\boxed{90}$Judge: The output provides the correct answer of 90, but violates the rubric requirement of 'no working shown in the final output' by including extensive step-by-step calculations and explanations before the answer.
Reasoning: The single correct answer 90, with no working shown in the final output. The deterministic checks are exact.
If the judge's bar of 8/10 is good enough for you, Muse Glimmer 30B at $0.26 per 1,000 runs. If you need the top score, Muse Glimmer 30B at $0.26 per 1,000 runs.
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