Run: 2026-03-09-01KK9PWWXMZS7E69CYNKTRNNP1

Run Details

Duration:
14.4s
Cost:
$0.013992
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
Rain needled the manor windows as Detective Mara Voss arrived, summoned before dawn by a trembling call from the housekeeper. Inside, candlelight shivered along portraits whose stern eyes seemed newly awake, watching servants cluster silently around the grand staircase below. At the landing lay Edmund Wren, throat opened with surgical precision, one gloved hand pointing accusingly toward the library door. No blood marked the corridor beyond him, yet muddy footprints ended abruptly beside the banister, as though erased midstep there. Mara noticed the stopped clock above the hearth, its hands fixed at 4:17, and smelled faint lilacs beneath sharp cordite. Then the butler whispered that every guest had remained upstairs all night, which made the missing widow impossible to ignore.
created_at"2026-03-09T16:29:17.117Z" 3/9/2026, 4:29:17 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency13253
moderation_latency(null)
generation_time14266
tokens_prompt46
tokens_completion201
native_tokens_prompt41
native_tokens_completion926
native_tokens_completion_images0
native_tokens_reasoning767
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"
usage0.0139925
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_004a59dc2dfdc2340169aef55d2f98819496a8b59be01d9a44"
is_byokfalse
latency173
model_permaslug"openai/gpt-5.4-20260305"
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-1773073757-qAYfAtNmfi0n0LzABgde"
upstream_id"resp_004a59dc2dfdc2340169aef55d2f98819496a8b59be01d9a44"
total_cost0.0139925
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
020
120
220
320
420
520