Run: 2026-10-05-01M46B2HJJQE0VN27BTGX7BV5E

Run Details

Duration:
25.2s
Cost:
$0.009302
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 grandfather clock struck thirteen, and every guest in Blackthorn House pretended not to hear the extra chime. Inspector Vale arrived before dawn, summoned by a telegram containing only seven words: Your brother has finally told the truth. He found his brother seated at the breakfast table, wearing evening clothes and a smile nobody in the family recognized. The silver teapot stood beside him, still warm, although the housekeeper swore nobody had entered that room since yesterday evening. Outside, rain scratched the windows while six relatives waited beneath ancestral portraits, each holding a different explanation for being awake. Only the youngest daughter said nothing, watching instead the empty chair opposite the body as though someone occupied it still. Vale removed his gloves and noticed a thread caught beneath his brother's wedding ring, which had been missing for years. Then, from somewhere inside the locked nursery upstairs, a child began humming the song they had buried with their mother.
created_at"2026-10-05T15:31:47.113Z" 10/5/2026, 3:31:47 PM
model"openai/gpt-6.1-sol-20260929"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency22956
moderation_latency(null)
generation_time24882
tokens_prompt46
tokens_completion261
native_tokens_prompt41
native_tokens_completion922
native_tokens_completion_images0
native_tokens_reasoning728
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"
usage0.009302
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791214307-p2mfALzt4XWYeQjiBQ8L"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791214307-iMoNmwwEgGhuQpKpqyoj"
upstream_id"resp_06c3b5ea5661d6cc016ac3c2e349d887d19229a241eb7593c1"
provider_responses
0
endpoint_id"dfb9d5c3-63f9-4263-8b78-4fa97dcb3d5e"
id"resp_06c3b5ea5661d6cc016ac3c2e349d887d19229a241eb7593c1"
is_byokfalse
latency308
model_permaslug"openai/gpt-6.1-sol-20260929"
provider_name"OpenAI"
status200
total_cost0.009302
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
sentences8
wordCounts
020
120
220
320
420
520
620
720