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Run: 2025-04-14-01JRTSXGR88S03QSA2PMD6Q9KW
Run Details
Model:
GPT-4.1
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
2.2s
Cost:
$0.001196
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
66.97%
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
Lightning splintered the midnight sky as Eleanor Ashcroft’s silhouette appeared, gliding across marble floors drenched in shadowed uncertainty. Her gold bracelet jingled faintly while the grandfather clock chimed twelve, its echoes weaving ghostly warnings through the opulent drawing room. Outside, rain battered the stained-glass windows, painting crimson reflections onto velvet drapes, as uneasy guests assembled behind closed mahogany doors. Detective Rowan paused in the foyer, his keen eyes noting muddy footprints, a crimson scrap snagged on the newel post. Nearby, a scream fractured the oppressive silence, shattering fragile calm and drawing trembling hands toward concealed secrets underneath the Persian rug.
id
"gen-1744656319-P4zjGRN50TcymGjkdQ0e"
upstream_id
"chatcmpl-BMJ5zIuE1O8Dy1zrWtEZ5ujBwNmpI"
total_cost
0.001196
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:45:21.721862+00:00"
4/14/2025, 6:45:21 PM
model
"openai/gpt-4.1-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
370
moderation_latency
100
generation_time
1168
tokens_prompt
42
tokens_completion
138
native_tokens_prompt
42
native_tokens_completion
139
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
0.001196
Evaluation details
Result
Evaluator
Details
Meta Data
66.97%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
18
1
21
2
20
3
20
4
21