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Run: 2026-03-06-01KK1J9V48WQN6HAPY37TR6NGF
Run Details
Model:
GPT-5.4 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
4.7s
Cost:
$0.002128
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 whispered against Blackthorn Manor as mourners gathered beneath thunder. Candles trembled wildly, throwing long shadows across ancestral portraits tonight. Lady Vale descended slowly, her veil hiding grief and calculation. At midnight, the clock chimed thirteen, then someone screamed upstairs. We found Sir Alistair sprawled beside shattered glass and roses. His ringless hand pointed toward the locked study door accusingly. No window stood open, yet mud stained the Persian carpet. Among the guests, one face remained dry despite stormy weather. Inspector Wren removed his hat and surveyed our frightened silence. Then he announced, “The killer is here, listening carefully now.”
created_at
"2026-03-06T12:35:02.936Z"
3/6/2026, 12:35:02 PM
model
"openai/gpt-5.4-20260305"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
404
moderation_latency
(null)
generation_time
4614
tokens_prompt
46
tokens_completion
180
native_tokens_prompt
41
native_tokens_completion
135
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
0.0021275
router
(null)
provider_responses
0
endpoint_id
"9ff5625c-403f-4d7f-b895-58ac7295062c"
id
"resp_018959fa3cfdb1f00169aac9f704a081948feeae1567ced487"
is_byok
false
latency
180
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-1772800502-6d015GaxTPvi2yM1nU5a"
upstream_id
"resp_018959fa3cfdb1f00169aac9f704a081948feeae1567ced487"
total_cost
0.0021275
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