Run: 2026-03-18-01KM08RSBG3V86A2E3NVERFS6J

Run Details

Duration:
13.5s
Cost:
$0.001274
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

AI
At dawn, the ferry docked beside Marrowgate, where fog clung to lamplight and secrets waited beneath weathered planks all morning. Detective Lila Hart stepped from her coat, noticing lilies scattered in a spiral around the dead fisher by icehouse door. His eyes were filmed over, yet the tide line smelled sweet, like cloves, not salt from someone standing nearby yesterday. A clerk whispered that Marrowgate's mayor hosted last night's charity, then vanished after midnight without luggage into private carriage house. Lila crouched, reading a chalked symbol on his wrist: a broken compass, pointing nowhere while wind tugged receipts from pockets. When she asked for prints, the constable produced gloves stained violet, matching the lilies that reappeared, miraculously, after every rain. Tonight, she promised, the killer would speak through patterns, because Marrowgate kept accounting for every lie in ink, and silence.
created_at"2026-03-18T10:44:54.27Z" 3/18/2026, 10:44:54 AM
model"openai/gpt-5.4-nano-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency13203
moderation_latency(null)
generation_time13372
tokens_prompt46
tokens_completion808
native_tokens_prompt41
native_tokens_completion1013
native_tokens_completion_images0
native_tokens_reasoning811
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"
usage0.00127445
router(null)
provider_responses
0
endpoint_id"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id"resp_0bc6856e2da14c920169ba822651b08195bbe50dd634eb847d"
is_byokfalse
latency187
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-1773830694-Bg9HG8mGxJQdKlT8UlUZ"
upstream_id"resp_0bc6856e2da14c920169ba822651b08195bbe50dd634eb847d"
total_cost0.00127445
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
020
120
220
320
420
520
620