Run: 2026-03-18-01KM0AN249GE2A0S161NE7J15Z

Run Details

Duration:
1.2s
Cost:
$0.000191
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
84.45% 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
Detective Maren Vale arrived at Orchard House at midnight tonight. Inside, servants whispered, while rain tapped windows like nervous fingers. The body lay sprawled beneath the grand staircase, silent still. A silver pocketwatch gleamed near his lifeless, stiffened hand. Captain Rusk announced theft rumors, though evidence remained scarce. Maren noted mud on boots, matching tracks toward conservatory doors. Upstairs, a locked study smelled of roses and gunpowder. Guests gathered anxiously, claiming innocence, yet avoiding direct questions. Maren traced cobwebbed fingerprints across the banister carefully, slowly. Then she discovered a torn glove, bearing initials only.
created_at"2026-03-18T11:17:49.333Z" 3/18/2026, 11:17:49 AM
model"openai/gpt-5.4-nano-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency438
moderation_latency(null)
generation_time1086
tokens_prompt46
tokens_completion181
native_tokens_prompt41
native_tokens_completion146
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"
usage0.0001907
router(null)
provider_responses
0
endpoint_id"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id"resp_01f8f855014f40ca0169ba89dd63748196bf1e6bad5009553f"
is_byokfalse
latency179
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-1773832669-2WKpsHF4pQqlUq6t8fmF"
upstream_id"resp_01f8f855014f40ca0169ba89dd63748196bf1e6bad5009553f"
total_cost0.0001907
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
84.45% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
39
49
510
69
79
89
99