Run: 2026-03-18-01KM09YN3DV71HM839YF1TKRB8

Run Details

Duration:
7.0s
Cost:
$0.000527
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain slicked Alder Street as midnight masked the mansion's silence. Detective Mara Quinn arrived, notebook ready, to question nervous servants. Inside, the victim lay sprawled beside a toppled grandfather clock. A single rose rested near his hand, still fragrant tonight. Detectives found no weapon, only chalk dust on windowsills outside. Mara noticed a missing key, etched with her own initials.
created_at"2026-03-18T11:05:35.099Z" 3/18/2026, 11:05:35 AM
model"openai/gpt-5.4-nano-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6844
moderation_latency(null)
generation_time6928
tokens_prompt46
tokens_completion282
native_tokens_prompt41
native_tokens_completion415
native_tokens_completion_images0
native_tokens_reasoning324
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"
usage0.00052695
router(null)
provider_responses
0
endpoint_id"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id"resp_05a7124c57e0e40f0169ba86ff2f6081969760fe70b22aab9e"
is_byokfalse
latency209
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-1773831935-kezZXK42q4fljBsbH4Tr"
upstream_id"resp_05a7124c57e0e40f0169ba86ff2f6081969760fe70b22aab9e"
total_cost0.00052695
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
010
110
210
310
410
510