Run: 2025-04-16-01JRZZ7EGP9P309BRKH91T5Q5Z

Run Details

Model:: o4 Mini High
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 24.3s
Cost:: $0.008190
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

Fog clung to cobblestones as distant church bell tolled three.  
Dim lamplight revealed crimson stains pooling beneath twisted wooden floorboards.  
A solitary scream pierced midnight silence, echoing through empty corridors.  
Detective Marshall arrived breathless, flashlight beam slicing shadows into chaos.  
Leather-bound journal lay open near lifeless hand, pages stained red.  
Thunder rumbled ominously, wind rattling antique windows with threatening force.  
Unknown footsteps retreated; a hidden witness concealed in darkness watched.

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-1744829660-ZRilE5A59IFWFR9UwG2X"
upstream_id	"chatcmpl-BN2BoH6KHR81z4Jcs8Jh3Yob1x9Cd"
total_cost	0.0081895
cache_discount	(null)
provider_name	"OpenAI"
created_at	"2025-04-16T18:54:44.544396+00:00" 4/16/2025, 6:54:44 PM
model	"openai/o4-mini-high-2025-04-16"
app_id	182717
streamed	true
cancelled	false
latency	22535
moderation_latency	119
generation_time	23731
tokens_prompt	42
tokens_completion	1832
native_tokens_prompt	41
native_tokens_completion	1851
native_tokens_reasoning	1728
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	0.0081895