Run: 2026-10-27-01M5YJ5PVTKHX25JTNANHN7NB1

Run Details

Duration:
12.4s
Cost:
$0.005281
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
The fog had swallowed Blackthorn Manor before Detective Mara Voss discovered the first footprint on its freshly polished hall floor. It pointed toward the library, where a grandfather clock had stopped at midnight and someone had left the door ajar. Inside, Lord Blackthorn lay beneath his portrait, a silver letter opener buried deeply in the dark velvet of his waistcoat. His eyes stared at the ceiling, but his right hand clasped a chess piece carved from remarkably pale, smooth bone. Mara knelt beside him, noticing that the white queen was warm, although the body had already begun to grow cold. Behind her, the butler cleared his throat and said the household had gathered for dinner precisely an hour earlier tonight. Nobody had entered the library since, he insisted, while his gaze drifted toward the portrait hanging above his murdered employer. Mara followed his eyes and saw a fresh slit in the canvas, directly over the painted heart of Lord Blackthorn. Then, from somewhere inside the wall, a woman began to laugh, and the butler dropped his candle onto the floor.
created_at"2026-10-27T11:33:18.853Z" 10/27/2026, 11:33:18 AM
model"openai/gpt-6.1-terra-20261026"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4304
moderation_latency(null)
generation_time12340
tokens_prompt46
tokens_completion658
native_tokens_prompt41
native_tokens_completion1048
native_tokens_completion_images0
native_tokens_reasoning826
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"
usage0.005281
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.22.1; linux; x64))"
http_referer(null)
request_id"req-1793100798-nAgvs0ZrMLa5irz8ipko"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1793100798-tRSXx34P7DmNT1W1aj8W"
upstream_id"resp_079203ccd4093371016ae08bfef28c87d1a476545ab76a4d36"
provider_responses
0
endpoint_id"2d2ad10f-098e-4bbf-aa95-11f705b2b9a2"
id"resp_079203ccd4093371016ae08bfef28c87d1a476545ab76a4d36"
is_byokfalse
latency334
model_permaslug"openai/gpt-6.1-terra-20261026"
provider_name"OpenAI"
status200
total_cost0.005281
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