Run: 2026-03-18-01KM08N5518MS5WCFXQPD0MYAN

Run Details

Duration:
1.1s
Cost:
$0.000128
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
86.73% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Midnight fog cloaked the manor grounds. Guests gathered, whispering about missing heirloom. A valet found a silent body. Detective Lark arrived, calm, observant. Moonlight reflected on polished banquetware. Everyone denied seeing anything suspicious. The victim wore a waxed ring. A key lay near broken glass. Servants trembled under questioning lanterns. Lark noted scents of bitter almonds.
created_at"2026-03-18T10:42:55.279Z" 3/18/2026, 10:42:55 AM
model"openai/gpt-5.4-nano-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency492
moderation_latency(null)
generation_time1030
tokens_prompt46
tokens_completion110
native_tokens_prompt41
native_tokens_completion96
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"
usage0.0001282
router(null)
provider_responses
0
endpoint_id"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id"resp_0cec255d1ddbb1390169ba81af57488197b3f02e6c60449d98"
is_byokfalse
latency214
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-1773830575-L8sJrU4VlGk2Ql9bnJh8"
upstream_id"resp_0cec255d1ddbb1390169ba81af57488197b3f02e6c60449d98"
total_cost0.0001282
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
86.73% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
06
16
26
35
45
55
66
76
85
96