Run: 2025-04-16-01JRZYSEBDM8B4WPD94BE2YZGC

Run Details

Model:: o4 Mini
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 28.5s
Cost:: $0.012132
Provider:: OpenAI

Evaluation summary

Score	Evaluator	Details Link
100.00%	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

Lightning cracked above the ancient manor’s silent, foreboding stone walls.  
Footsteps echoed through the deserted hall, shadows dancing on walls.  
Detective Sinclair arrived moments too late, finding crimson stains everywhere.  
A lifeless body lay sprawled across the ornate Persian rug.  
Candles flickered ominously, casting monstrous silhouettes upon anxious visitors faces.  
A chilling wind whispered secrets through cracked, broken, ancient windowpanes.  
The distant clock tolled midnight, affirming that evil awakening begins.

Evaluation details

Result

Evaluator

Details

Meta Data

100.00%

Matches word count

n/a

neededClean

false

sentences

wordCounts

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

id	"gen-1744829201-uUWx7uhLC0vxCkApSD3Y"
upstream_id	"chatcmpl-BN24Q2eIBbt8bwEPas6HlWnPGB5qO"
total_cost	0.0121319
cache_discount	(null)
provider_name	"OpenAI"
created_at	"2025-04-16T18:47:09.73134+00:00" 4/16/2025, 6:47:09 PM
model	"openai/o4-mini-2025-04-16"
app_id	182717
streamed	true
cancelled	false
latency	26270
moderation_latency	80
generation_time	27211
tokens_prompt	42
tokens_completion	2728
native_tokens_prompt	41
native_tokens_completion	2747
native_tokens_reasoning	2624
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	0.0121319