Run: 2026-02-16-01KHKAXQF7R29CJ75R5DNT2RD7

Run Details

Duration:
28.3s
Cost:
$0.023561
Provider:
OpenAI

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
Rain hammered the sleepy town. Sirens wailed against distant thunder. Detective Mara Quinn arrived late. Headlights carved through the fog. Harbor Street glistened like oil. Police tape fluttered, yellow, accusing. Officers hunched beneath dripping awnings. Radios crackled with clipped urgency. The Gull's Nest sign flickered. Inside, music played without listeners. Glass crunched under Mara's boots. The bar smelled of bleach. Someone had cleaned, then stopped. A single stool stood overturned. Blood mapped arcs across wood. The jukebox hummed, note dying. Body lay behind the counter. White shirt, black vest, lifeless. Eyes stared upward, demanding explanation. Stormlight shimmered on the knife. Handle protruded from his throat. No splatter marked surrounding surfaces. Mara noted absence of struggle. This murder wanted careful reading. She checked the silent doorway. Rain pattered, masking approaching footsteps. In the mirror, something moved. Not her reflection, someone behind. Mara turned, gun already rising. The lights died without warning. Darkness swallowed the room whole. A chair scraped, then silence. Somewhere nearby, a watch ticked. Mara smelled cordite beneath bleach. There was someone else watching.
created_at"2026-02-16T13:41:30.696567+00:00" 2/16/2026, 1:41:30 PM
model"openai/gpt-5.1-20251113"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3442
moderation_latency(null)
generation_time28051
tokens_prompt46
tokens_completion1207
native_tokens_prompt41
native_tokens_completion2351
native_tokens_completion_images0
native_tokens_reasoning2055
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"
usage0.02356125
router(null)
provider_responses
0
id"resp_01399f50e1d3ced10169931e6e235c81979b5d59f8fbbdaca5"
status200
is_byokfalse
latency178
endpoint_id"764eb97f-8bab-4326-b29b-7a8799b00a70"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.1-20251113"
api_type"completions"
id"gen-1771249262-SPvmaq26StOTrm1a6c3A"
upstream_id"resp_01399f50e1d3ced10169931e6e235c81979b5d59f8fbbdaca5"
total_cost0.02356125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences35
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145
155
165
175
185
195
205
215
225
235
245
255
265
275
285
295
305
315
325
335
345