Run: 2025-04-14-01JRTSTQE3XPZGARCRWFC8E41A

Run Details

Model:: GPT-4.1
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 2.6s
Cost:: $0.000796
Provider:: OpenAI

Evaluation summary

Score	Evaluator	Details Link
88.94%	Matches word count	(details)

Model input

User/Human

Please write the opening scene of a murder mystery where each sentence has exactly 5 words.
Please make sure that each sentence has the same length. Only return the opening itself.

Model response

Rain battered the old manor.  
Footsteps echoed in empty hallways.  
A clock chimed, startling the silence.  
Gloved hands gripped a silver candlestick.  
Lightning revealed shadows on wallpaper.  
A window creaked open, unseen.  
Blood pooled beneath the velvet drapes.  
Footprints tracked crimson down the corridor.  
A scream shattered the brittle hush.  
Someone whispered, "It’s too late."

Evaluation details

Result

Evaluator

Details

Meta Data

88.94%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	5
1	5
2	6
3	6
4	5
5	5
6	6
7	6
8	6
9	5

id	"gen-1744656229-uKbkQjxLUY6wPxIX5vhU"
upstream_id	"chatcmpl-BMJ4XUziZ7V4twl1jZtcW3Syjl62c"
total_cost	0.000796
cache_discount	(null)
provider_name	"OpenAI"
created_at	"2025-04-14T18:43:51.044885+00:00" 4/14/2025, 6:43:51 PM
model	"openai/gpt-4.1-2025-04-14"
app_id	182717
streamed	true
cancelled	false
latency	307
moderation_latency	1069
generation_time	758
tokens_prompt	42
tokens_completion	88
native_tokens_prompt	42
native_tokens_completion	89
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	0.000796