Run: 2025-04-14-01JRTSZJVVYNJ580DEGG4K5ACP

Run Details

Model:: GPT-4.1
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 2.3s
Cost:: $0.001300
Provider:: OpenAI

Evaluation summary

Score	Evaluator	Details Link
97.41%	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 tapped quietly against the ornate windows of Blackwood Manor.  
A grand chandelier flickered as thunder groaned somewhere far away.  
Four guests exchanged wary glances, each clutching a delicate teacup.  
The butler, stiff and silent, lingered near the velvet curtains.  
A scream shattered the calm, echoing down the marble-tiled hallway.  
All conversations died; porcelain cups rattled on their saucers with fear.  
Footsteps hurried to the library, drawn by chilling, desperate cries.  
They found the host sprawled lifeless, crimson pooling beneath him.  
A letter opener gleamed cruelly, gripped tight in the wound.  
The butler closed the doors, trapping suspicion in the room.

Evaluation details

Result

Evaluator

Details

Meta Data

97.41%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	10
1	10
2	10
3	10
4	10
5	11
6	10
7	10
8	10
9	10

id	"gen-1744656387-MMwIFBDLYpL2IwmcgQQF"
upstream_id	"chatcmpl-BMJ75r2EjyrTg1p6383M82P4ZIJJM"
total_cost	0.0013
cache_discount	(null)
provider_name	"OpenAI"
created_at	"2025-04-14T18:46:29.789661+00:00" 4/14/2025, 6:46:29 PM
model	"openai/gpt-4.1-2025-04-14"
app_id	182717
streamed	true
cancelled	false
latency	337
moderation_latency	113
generation_time	1330
tokens_prompt	42
tokens_completion	151
native_tokens_prompt	42
native_tokens_completion	152
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	0.0013