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Run: 2026-03-06-01KK1H25KBFMB2YCHKFSWAYXVS
Run Details
Model:
GPT-5.4
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
4.3s
Cost:
$0.002217
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
94.82%
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 hammered Blackthorn Manor as mourners gathered for Arthur Vale's wake. Candles guttered low, casting nervous shadows across ancestral portraits watching. No one mentioned the missing will, though everyone noticed absence. At precisely midnight, the grandfather clock shuddered, then abruptly stopped. A scream split silence upstairs, sharp as breaking crystal glass. They found Arthur's daughter sprawled beside the locked study door. Her fingers clutched a chess knight stained with fresh blood. Beneath the window, muddy footprints ended where the moonlight began. Inspector Greaves arrived smiling faintly, already suspecting everyone inside. Then the housekeeper whispered, "The murderer is still among us."
created_at
"2026-03-06T12:13:22.932Z"
3/6/2026, 12:13:22 PM
model
"openai/gpt-5.4-20260305"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
389
moderation_latency
(null)
generation_time
4216
tokens_prompt
46
tokens_completion
186
native_tokens_prompt
41
native_tokens_completion
141
native_tokens_completion_images
0
native_tokens_reasoning
0
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
0.0022175
router
(null)
provider_responses
0
endpoint_id
"9ff5625c-403f-4d7f-b895-58ac7295062c"
id
"resp_0e87acbf2ad5ade30169aac4e30314819796e17c4919d2243c"
is_byok
false
latency
158
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-1772799202-KrhfoqJMGPPfknhMoWjS"
upstream_id
"resp_0e87acbf2ad5ade30169aac4e30314819796e17c4919d2243c"
total_cost
0.0022175
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
94.82%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
11
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
9
9
10