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Run: 2026-03-09-01KK9PSKQA9HX3RCY6QVFP79MB
Run Details
Model:
GPT-5.4 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
12.3s
Cost:
$0.011532
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
Messages
Meta
AI
Rain worried the windows while Blackthorn Manor held its breath. At midnight, the grandfather clock coughed once, then fell silent. Evelyn Price paused outside the library, hearing slippered footsteps retreat. When she entered, candlelight trembled across portraits and spilled brandy. Sir Adrian lay beneath the desk, his throat opened neatly. Beside his hand, a chess knight stared upward, crimson flecked. The French doors stood locked, their brass handles cold, immaculate. Only one thing moved: the curtains, breathing inward without wind. Evelyn rang the bell, and somewhere upstairs a woman screamed. By dawn, everyone would lie, and one liar would die.
created_at
"2026-03-09T16:27:29.591Z"
3/9/2026, 4:27:29 PM
model
"openai/gpt-5.4-20260305"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
11713
moderation_latency
(null)
generation_time
11970
tokens_prompt
46
tokens_completion
481
native_tokens_prompt
41
native_tokens_completion
762
native_tokens_completion_images
0
native_tokens_reasoning
618
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"completed"
usage
0.0115325
router
(null)
provider_responses
0
endpoint_id
"9ff5625c-403f-4d7f-b895-58ac7295062c"
id
"resp_062e202f4443a3030169aef4f1b9fc819787c87d33a76692e6"
is_byok
false
latency
181
model_permaslug
"openai/gpt-5.4-20260305"
provider_name
"OpenAI"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer
(null)
api_type
"completions"
id
"gen-1773073649-QmGqfLjMkCrO9AvKxwhP"
upstream_id
"resp_062e202f4443a3030169aef4f1b9fc819787c87d33a76692e6"
total_cost
0.0115325
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
10