Run: 2025-04-14-01JRTSSBC1DTX6GG4W9B2N9V40

Run Details

Model:: GPT-4.1 Nano
Test:: N-Length Sentences
Scenario:: Write sentences with 20 words each
Duration:: 9.5s
Cost:: $0.000057
Provider:: OpenAI

Evaluation summary

Score	Evaluator	Details Link
65.41%	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

The rain hammered against the narrow windows, casting flickering shadows as Detective Harris entered the dimly lit abandoned mansion swiftly.  
Footsteps echoed softly on the creaking wooden floorboards, revealing the faint scent of smoke intertwined with lingering fear and despair.  
A single candle flickered atop a dusty desk, illuminating a blood-stained letter discarded carelessly beside a shattered vase.  
Outside, the storm raged fiercely, darkness deepening as distant sirens wailed ominously, hinting at chaos hidden within this haunted estate.  
Inside, silence fell suddenly, broken only by the faint whisper of wind slipping through cracked shutters revealing secrets long buried deep inside.

Evaluation details

Result

Evaluator

Details

Meta Data

65.41%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	20
1	20
2	18
3	20
4	22

id	"gen-1744656186-L2z7Q61LPXBVFD6aibyM"
upstream_id	"chatcmpl-BMJ3qf03XgktsedxtJ4EYdzsXmei0"
total_cost	0.0000574
cache_discount	(null)
provider_name	"OpenAI"
created_at	"2025-04-14T18:43:13.316618+00:00" 4/14/2025, 6:43:13 PM
model	"openai/gpt-4.1-nano-2025-04-14"
app_id	182717
streamed	true
cancelled	false
latency	375
moderation_latency	3000
generation_time	5358
tokens_prompt	42
tokens_completion	132
native_tokens_prompt	42
native_tokens_completion	133
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	0.0000574