Run: 2026-09-23-01M37HPV3D12WR9YYXMZ7HGHBN

Run Details

Duration:
17.3s
Cost:
$0.012142
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
At midnight the bells of Saint Agnes rang thirteen times, and every light in Blackthorn House went out without warning. Detective Mara Vale arrived before dawn, summoned by a telephone call that ended with a distant scream and broken glass. Inside, the household waited beneath a chandelier, their faces pale except for the butler, whose cuffs were stained dark red. The victim lay upstairs in the locked library, seated behind his desk, with a fresh rose pressed between his lips. His name was Edwin Blackthorn, and someone had written an apology across the window in letters made of gray ash. Mara read the message twice, then noticed the ash remained undisturbed on the cold hearth beside the recently murdered man. Outside, snow covered the garden paths, but only one set of footprints led toward the house from the iron gate. None led away, although the front door had been bolted from within since dinner, according to every trembling household witness. Then the butler whispered that Blackthorn had ordered the roses burned that morning, three days after the local florist vanished.
created_at"2026-09-23T16:31:16.084Z" 9/23/2026, 4:31:16 PM
model"openai/gpt-6-sol-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency15753
moderation_latency(null)
generation_time16915
tokens_prompt46
tokens_completion273
native_tokens_prompt41
native_tokens_completion1206
native_tokens_completion_images0
native_tokens_reasoning989
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"
usage0.012142
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790181076-CqLkrnubhgmd5TFBvwqA"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790181076-YRtaRZ4sohRuMo7YGPzR"
upstream_id"resp_0b693215a5df281e016ab3fed434ac87d1b13044f98a1dd69f"
provider_responses
0
endpoint_id"1cfc7d9d-4404-4b8e-9ee4-58ae45c9dcd4"
id"resp_0b693215a5df281e016ab3fed434ac87d1b13044f98a1dd69f"
is_byokfalse
latency1540
model_permaslug"openai/gpt-6-sol-20260922"
provider_name"OpenAI"
status200
total_cost0.012142
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
020
120
220
320
420
520
620
720
820