Run: 2026-07-09-01KX3ZZX3W3B8FVNJ0QPX2218M

Run Details

Duration:
8.9s
Cost:
$0.013678
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
Rain battered Blackthorn Hall as Inspector Mara Venn arrived, carrying a soaked warrant and an old grief beneath her coat. Inside, twelve guests stood silent around the library fire, watching the clock bleed minutes toward midnight without speaking or moving. At the center lay Gideon Vale, the wealthy host, smiling faintly despite the silver letter opener lodged in his throat. Nobody claimed to have heard a struggle, yet every face reflected the same private terror when lightning exposed the corpse. Mara noticed muddy footprints crossing the Persian rug, beginning beside the conservatory door and ending abruptly beneath Vale's overturned chair. Then the butler coughed, and a small brass key rolled quietly from his sleeve to rest against Mara's polished boot. Before anyone could speak, the grandfather clock struck twelve, and Vale's dead hand closed tightly around a second matching key.
created_at"2026-07-09T17:49:44.454Z" 7/9/2026, 5:49:44 PM
model"openai/gpt-5.6-terra-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6263
moderation_latency(null)
generation_time8708
tokens_prompt46
tokens_completion235
native_tokens_prompt41
native_tokens_completion905
native_tokens_completion_images0
native_tokens_reasoning730
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"
usage0.0136775
router(null)
provider_responses
0
endpoint_id"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id"resp_02c2876d02f03038016a4fdf38867c81958e40c3a796a862d5"
is_byokfalse
latency213
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-1783619384-MzZy8RSlYet2dHglWkfq"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783619384-5M4mkXBWsh3gifWfeeLE"
upstream_id"resp_02c2876d02f03038016a4fdf38867c81958e40c3a796a862d5"
total_cost0.0136775
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
sentences7
wordCounts
020
120
220
320
420
520
620