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Run: 2026-03-18-01KM09KTHRSCAWNV2822QGNNCK
Run Details
Model:
GPT-5.4 Mini (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
8.1s
Cost:
$0.005048
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 stitched the manor windows shut, while Detective Mara Vale arrived, her headlights smearing gold across the gravel drive below. Inside, the guests stood frozen beneath the chandelier, pretending not to notice the body sprawled beside the grand piano there. A crystal decanter lay shattered nearby, and in its spilled wine, Mara spotted a single cufflink stamped with unfamiliar initials. The widow wept too loudly, the butler watched too quietly, and every portrait seemed to lean closer in accusation tonight. Mara removed her gloves, glanced at the storm-dark garden, and understood someone in this house had killed once already here.
created_at
"2026-03-18T10:59:40.227Z"
3/18/2026, 10:59:40 AM
model
"openai/gpt-5.4-mini-20260317"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
7854
moderation_latency
(null)
generation_time
7951
tokens_prompt
46
tokens_completion
461
native_tokens_prompt
41
native_tokens_completion
1115
native_tokens_completion_images
0
native_tokens_reasoning
986
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
0.00504825
router
(null)
provider_responses
0
endpoint_id
"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id
"resp_04d875af74fc88c10169ba859c4d288197a0efc56b06d7a723"
is_byok
false
latency
185
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-1773831580-CD6syyvtRha6XXWiz8Fy"
upstream_id
"resp_04d875af74fc88c10169ba859c4d288197a0efc56b06d7a723"
total_cost
0.00504825
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
5
wordCounts
0
20
1
20
2
20
3
20
4
20