Run: 2026-10-27-01M5YEJKS8H81SMKB2Q5KHRZFM

Run Details

Duration:
8.2s
Cost:
$0.003466
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Snow fell silently as Detective Mara Vale approached Blackthorn House. Every window glowed, except the one above the locked library. Inside, a grandfather clock announced midnight with thirteen deliberate chimes. The butler met her beneath a portrait of the deceased. His hands were clean, but blood darkened his white cuffs. Lord Blackthorn lay behind the library door, according to everyone. No one had entered since his scream split the evening. Mara knelt beside the lock and examined its tiny scratches. Someone had forced it recently, though not from this side. She pushed the door open, revealing an empty leather chair. Blood pooled underneath it, still reflecting the firelight in waves. On the desk, a note bore Mara’s name in ink. Behind her, the butler whispered that nobody knew her name.
created_at"2026-10-27T10:30:27.378Z" 10/27/2026, 10:30:27 AM
model"openai/gpt-6.1-terra-20261026"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4224
moderation_latency(null)
generation_time8173
tokens_prompt46
tokens_completion463
native_tokens_prompt41
native_tokens_completion685
native_tokens_completion_images0
native_tokens_reasoning516
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"
usage0.003466
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.22.1; linux; x64))"
http_referer(null)
request_id"req-1793097027-6yMwcZwhV53JGt58k1Ds"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1793097027-uL08hQvhUhaf6CsVaqCZ"
upstream_id"resp_07a09dad0104955b016ae07d43734487d1a7cec93a91831f92"
provider_responses
0
endpoint_id"2d2ad10f-098e-4bbf-aa95-11f705b2b9a2"
id"resp_07a09dad0104955b016ae07d43734487d1a7cec93a91831f92"
is_byokfalse
latency420
model_permaslug"openai/gpt-6.1-terra-20261026"
provider_name"OpenAI"
status200
total_cost0.003466
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
sentences13
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210