Run: 2025-04-14-01JRTSQQG0PMBSEE08PXFES5TE

Run Details

Model:: GPT-4.1 Mini
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 3.3s
Cost:: $0.000198
Provider:: OpenAI

Evaluation summary

Score	Evaluator	Details Link
96.76%	Matches word count	(details)

Model input

User/Human

Please write the opening scene of a murder mystery where each sentence has exactly 10 words.
Please make sure that each sentence has the same length. Only return the opening itself.

Model response

The clock struck midnight as rain tapped on the windowpane.  
Detective Harper entered the room, eyes scanning each shadowy corner.  
A lifeless body lay sprawled beneath the ornate chandelier’s glow.  
Broken glass scattered, reflecting the flickering light with eerie brilliance.  
Whispers of secrets lingered thick inside the spacious, silent mansion.  
Harper knelt beside the victim, noting the peculiar crimson stain.  
The chilling breeze carried faint footsteps fading down the empty hall.  
Only one thing was certain: this was no ordinary death.

Evaluation details

Result

Evaluator

Details

Meta Data

96.76%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	10
1	10
2	10
3	10
4	10
5	10
6	11
7	10

id	"gen-1744656130-QV9rq02wAVjjcg7ECo12"
upstream_id	"chatcmpl-BMJ2wwKsbQrkoiDXS3X3OLGDhs2ry"
total_cost	0.0001976
cache_discount	(null)
provider_name	"OpenAI"
created_at	"2025-04-14T18:42:13.34989+00:00" 4/14/2025, 6:42:13 PM
model	"openai/gpt-4.1-mini-2025-04-14"
app_id	182717
streamed	true
cancelled	false
latency	602
moderation_latency	100
generation_time	2144
tokens_prompt	42
tokens_completion	112
native_tokens_prompt	42
native_tokens_completion	113
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	0.0001976