Run: 2026-07-09-01KX413S27S8BCT1E3SCC0AGD6

Run Details

Duration:
16.5s
Cost:
$0.046045
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 drummed against Blackwood Manor as Inspector Vale arrived, finding every window illuminated except the library’s narrow eastern pane upstairs. Inside, twelve dinner guests stood silently around Lord Blackwood, whose blood darkened the carpet beneath his outstretched hand like ink. The door remained locked from within, while its only key gleamed inside the dead man’s tightly clenched left fist ominously. On the desk, a silver clock ticked backward, counting toward midnight, though midnight had already passed precisely one hour earlier. Vale noticed muddy footprints crossing the ceiling, stopping directly above the body, where no ladder or hatch appeared anywhere nearby. “Nobody entered,” whispered Lady Blackwood, twisting her pearls, “and nobody left after the scream summoned us here to the library.” Then the corpse’s clenched fingers opened, releasing a warm brass button engraved with Inspector Vale’s own initials in fresh blood. Every guest stared at Vale, but he watched the backward clock stop suddenly, then begin striking thirteen slow, hollow chimes.
created_at"2026-07-09T18:09:19.95Z" 7/9/2026, 6:09:19 PM
model"openai/gpt-5.6-sol-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4098
moderation_latency(null)
generation_time15943
tokens_prompt46
tokens_completion674
native_tokens_prompt41
native_tokens_completion1528
native_tokens_completion_images0
native_tokens_reasoning1319
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
service_tier"default"
usage0.046045
router(null)
provider_responses
0
endpoint_id"a54c5de0-89bf-4ad7-a212-cf977eed918a"
id"resp_07bff73de8baec1e016a4fe3d000a88193b693fb95b698a2a9"
is_byokfalse
latency231
model_permaslug"openai/gpt-5.6-sol-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783620559-JT1VDnhm2UkSMk3IujjF"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620559-uGhZKZErzl8yBoCWcKLU"
upstream_id"resp_07bff73de8baec1e016a4fe3d000a88193b693fb95b698a2a9"
total_cost0.046045
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
020
120
220
320
420
520
620
720