Run: 2026-07-09-01KX40FFW98Y9AT6C560EG0TZM

Run Details

Duration:
7.4s
Cost:
$0.013723
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
Rain worried the tall windows of Blackthorn Hall before midnight. Inside, twelve guests listened as thunder swallowed the distant clocks. Lady Vale smiled, then collapsed silently beside the unfinished chessboard. Her champagne glass rolled, spilling bubbles across the crimson carpet. Nobody moved until Doctor Finch knelt and touched her wrist. His expression hardened beneath the chandelier's faint flickering yellow light. Then the butler discovered the library door standing wide open. Fresh mud marked a path toward Lord Vale's locked study. On the desk, a silver key gleamed beside blood drops. Inspector Mara arrived smiling, although nobody had summoned her tonight. She closed the study door and counted every frightened face. Outside, rain erased footprints, while something scratched beneath the floorboards.
created_at"2026-07-09T17:58:15.184Z" 7/9/2026, 5:58:15 PM
model"openai/gpt-5.6-terra-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6314
moderation_latency(null)
generation_time7197
tokens_prompt46
tokens_completion230
native_tokens_prompt41
native_tokens_completion908
native_tokens_completion_images0
native_tokens_reasoning743
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"
usage0.0137225
router(null)
provider_responses
0
endpoint_id"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id"resp_09f6d0dda167e7f9016a4fe137400c8196adbaf0675d42b4fc"
is_byokfalse
latency245
model_permaslug"openai/gpt-5.6-terra-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783619895-IK6Ius82sXjDLIVQLnKu"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783619895-U2ZRjdI0aD8Y64JRuqrI"
upstream_id"resp_09f6d0dda167e7f9016a4fe137400c8196adbaf0675d42b4fc"
total_cost0.0137225
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
sentences12
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110