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Run: 2026-03-18-01KM09GCPVAKXV8PCBHW8ZZVC0
Run Details
Model:
GPT-5.4 Nano
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
1.2s
Cost:
$0.000202
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
Tonight, the gallery hosted whispers, champagne, and a missing curator. Detective Maren Vale arrived, studying footprints dusted along marble floors. At midnight, a bell rang; the lights flickered, then steadied. Guests gathered silently, watching servants carry a covered body outside. The curator lay sprawled, eyes open, clutching a broken locket. Nearby, a violin case sat locked, humming faintly with static. Maren noted fresh rain, yet no wetness on silk gloves. Sir Aldren claimed innocence, pointing toward the scandalized painter. The painter protested, describing thieving thieves and vanished keys earlier. In the corridor, a tally of missing pearls matched bloodstains precisely.
created_at
"2026-03-18T10:57:47.752Z"
3/18/2026, 10:57:47 AM
model
"openai/gpt-5.4-nano-20260317"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
430
moderation_latency
(null)
generation_time
1090
tokens_prompt
46
tokens_completion
184
native_tokens_prompt
41
native_tokens_completion
155
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
0.00020195
router
(null)
provider_responses
0
endpoint_id
"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id
"resp_09f85b3ec322c7d90169ba852bcefc8197aa919f5d781b8e4b"
is_byok
false
latency
169
model_permaslug
"openai/gpt-5.4-nano-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-1773831467-iTxbnx3HhWYp2q4eGgL8"
upstream_id
"resp_09f85b3ec322c7d90169ba852bcefc8197aa919f5d781b8e4b"
total_cost
0.00020195
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
10
1
10
2
10
3
10
4
10
5
10
6
10
7
9
8
10
9
11