Run: 2026-03-18-01KM09GCPVAKXV8PCBHW8ZZVC0

Run Details

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

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_id182717
external_user(null)
streamedtrue
cancelledfalse
latency430
moderation_latency(null)
generation_time1090
tokens_prompt46
tokens_completion184
native_tokens_prompt41
native_tokens_completion155
native_tokens_completion_images0
native_tokens_reasoning0
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.00020195
router(null)
provider_responses
0
endpoint_id"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id"resp_09f85b3ec322c7d90169ba852bcefc8197aa919f5d781b8e4b"
is_byokfalse
latency169
model_permaslug"openai/gpt-5.4-nano-20260317"
provider_name"OpenAI"
status200
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_cost0.00020195
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
94.82% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
310
410
510
610
79
810
911