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Run: 2025-04-14-01JRTSY97NFV4VQQ1AYRSMWXDF
Run Details
Model:
GPT-4.1
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
2.5s
Cost:
$0.001300
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
84.26%
Matches word count
(details)
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
Rain splattered against the dimly lit windows, casting streaks across the ancient library walls lined with forgotten, dust-laden books. A crimson stain spread silently across the grand Persian rug, pooling beneath the lifeless hand of Lord Reginald Bartholomew IV. Chandeliers glimmered overhead, their reflected light flickering upon terrified faces gathered, each guest unwillingly trapped within the estate’s stone embrace. The grandfather clock chimed midnight, its reverberations mingling with gasps as Lady Sparrow discovered the dagger wedged deep in Reginald’s chest. Thunder roared above the moors, momentarily illuminating Detective Marlowe’s silhouette as he surveyed the macabre tableau, eyes narrowed with suspicion.
id
"gen-1744656344-sApF4fJK6Co4muYDVoXi"
upstream_id
"chatcmpl-BMJ6PPdudpq0GipX3CFXWGjYbfwiZ"
total_cost
0.0013
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:45:47.526688+00:00"
4/14/2025, 6:45:47 PM
model
"openai/gpt-4.1-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
494
moderation_latency
127
generation_time
1317
tokens_prompt
42
tokens_completion
151
native_tokens_prompt
42
native_tokens_completion
152
native_tokens_reasoning
0
num_media_prompt
(null)
num_media_completion
(null)
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.0013
Evaluation details
Result
Evaluator
Details
Meta Data
84.26%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
19
1
20
2
20
3
21
4
20