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Run: 2026-03-09-01KKAC7EFJANNWV037E30P1QT6
Run Details
Model:
GPT-5.4 (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
12.0s
Cost:
$0.012852
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 20 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 of Blackthorn Hall as Inspector Vale arrived, carrying a soaked valise and three unanswered telegrams inside. The butler admitted him without speaking, though his white gloves were streaked with ash and something darker at fingertips tonight. From the drawing room came a waltz, abruptly silenced when a woman screamed upstairs, then apologized to nobody at all. Vale climbed toward the sound, noticing muddy bootprints crossing the runner, each print edged neatly with glittering salt crystals alone. In Lady Ashcombe's locked study, the clock ticked loudly beside her body, while six guests studied one another like jurors. Nobody mentioned the missing necklace until Vale saw its clasp embedded in the victim's palm, clenched around auburn hair tightly.
created_at
"2026-03-09T22:42:02.889Z"
3/9/2026, 10:42:02 PM
model
"openai/gpt-5.4-20260305"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
10971
moderation_latency
(null)
generation_time
11828
tokens_prompt
46
tokens_completion
202
native_tokens_prompt
41
native_tokens_completion
850
native_tokens_completion_images
0
native_tokens_reasoning
687
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
0.0128525
router
(null)
provider_responses
0
endpoint_id
"9ff5625c-403f-4d7f-b895-58ac7295062c"
id
"resp_07033d290b25d2f40169af4cbafc3881968a98d991bfd7b5ed"
is_byok
false
latency
232
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-1773096122-qnVWLUXtJQv7iVi552aK"
upstream_id
"resp_07033d290b25d2f40169af4cbafc3881968a98d991bfd7b5ed"
total_cost
0.0128525
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
6
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20