Run: 2025-04-16-01JRZZ75BJG9H6RBNT56Y5E36T

Run Details

Model:: o4 Mini
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 22.1s
Cost:: $0.006852
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

Rain battered the ancient mansion under ominous moonlight and thunder.  
Detective Harris arrived, ghostly silhouette framed by flickering chandelier light.  
A crimson stain spread ominously across the shattered marble floor.  
Silence hung thickly; only soft sobs betrayed hidden morbid secrets.  
Inspector’s gloved hand hovered above the lifeless victim’s cold chest.  
Lightning flashed violently, illuminating elegant portraits and darkened corridors alike.  
Footsteps echoed ominously from the grand staircase behind whispered warnings.  
A single candlestick trembled, spilling wax upon bloodstained oak floor.

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
7	10

id	"gen-1744829650-ZXfs460EWkCgjj839HYg"
upstream_id	"chatcmpl-BN2Behb1hjV2QhHgyhQg8EyD0L2bh"
total_cost	0.0068519
cache_discount	(null)
provider_name	"OpenAI"
created_at	"2025-04-16T18:54:32.522007+00:00" 4/16/2025, 6:54:32 PM
model	"openai/o4-mini-2025-04-16"
app_id	182717
streamed	true
cancelled	false
latency	20299
moderation_latency	134
generation_time	21651
tokens_prompt	42
tokens_completion	1528
native_tokens_prompt	41
native_tokens_completion	1547
native_tokens_reasoning	1408
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	0.0068519