Run: 2026-03-18-01KM07B48F4FFBETNHRT9DQ6P4

Run Details

Duration:
1.1s
Cost:
$0.000535
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
87.04% 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 the manor steps as midnight swallowed every lantern. Inside, Colonel Voss lay dead beside the shattered clock. No one had heard the scream, though everyone claimed otherwise. Detective Mara Vale arrived, carrying questions sharper than apologies. The guests watched her enter, each hiding mud, fear, and alibis. A single red glove rested on the corpse's still hand. Mara noted it belonged to someone wealthy, careless, or desperate. Then the house lights failed, and another body dropped.
created_at"2026-03-18T10:19:58.107Z" 3/18/2026, 10:19:58 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency299
moderation_latency(null)
generation_time1014
tokens_prompt46
tokens_completion131
native_tokens_prompt41
native_tokens_completion112
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"
usage0.00053475
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_0e212d55616a368b0169ba7c4e2d7c8193a4c92ec63e49d864"
is_byokfalse
latency191
model_permaslug"openai/gpt-5.4-mini-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-1773829198-qWvTJCwUfImSLDTvkfvW"
upstream_id"resp_0e212d55616a368b0169ba7c4e2d7c8193a4c92ec63e49d864"
total_cost0.00053475
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
87.04% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
010
19
210
39
411
510
610
79