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Run: 2026-03-18-01KM08SZGZSKAAN9JC10FGR1SM
Run Details
Model:
GPT-5.4 Mini (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
12.2s
Cost:
$0.004801
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 stitched the windows as Detective Vale entered Blackthorn Manor. Inside, candles trembled beside a body on the marble floor. No one had heard the scream, according to the butler. Yet every guest looked guilty, especially the smiling widow herself. Vale knelt, noticing crimson thread shining beneath the victim's fingernail. Someone had cleaned the knife, but not carefully enough tonight. A clock chimed once, and every conversation stopped dead there. Then Vale saw the footprints leading away from the library. They belonged to someone wearing slippers, and blood still dripped. Vale smiled faintly; the killer had already invited another guest.
created_at
"2026-03-18T10:45:33.359Z"
3/18/2026, 10:45:33 AM
model
"openai/gpt-5.4-mini-20260317"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
11750
moderation_latency
(null)
generation_time
11941
tokens_prompt
46
tokens_completion
779
native_tokens_prompt
41
native_tokens_completion
1060
native_tokens_completion_images
0
native_tokens_reasoning
917
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
0.00480075
router
(null)
provider_responses
0
endpoint_id
"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id
"resp_001d1a02f80884d20169ba824d6fd081909bb5693b1b3edc7d"
is_byok
false
latency
207
model_permaslug
"openai/gpt-5.4-mini-20260317"
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-1773830733-R3Cs30taOl4GApCnE7mJ"
upstream_id
"resp_001d1a02f80884d20169ba824d6fd081909bb5693b1b3edc7d"
total_cost
0.00480075
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