Run: 2026-07-09-01KX40XCNS3N95YFBNHKGH3539

Run Details

Duration:
19.4s
Cost:
$0.046255
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 stopped, and every guest in Blackthorn Manor heard a woman's scream from the eastern tower. Detective Mara Voss set down her untouched wine, noticing fresh blood glistening beneath the locked library door nearby in silence. Lord Ashcombe reached for the key, but discovered his waistcoat pocket empty and his trembling fingers already stained dark crimson. Nobody admitted seeing the victim arrive that night, although her silver shoes waited neatly beside the rain darkened entrance carpet. Mara knelt, touched the blood, and found it warm, while thunder rattled portraits whose painted eyes seemed suddenly watchful tonight. Then the library door swung open by itself, revealing darkness, overturned furniture, and a body dressed entirely in white silk. Around the dead woman's throat hung a brass tag engraved with Mara's name and tomorrow's date in tiny precise letters. Behind them, someone whispered that the murderer had already left, just as muddy footprints appeared across the spotless ceiling overhead.
created_at"2026-07-09T18:05:50.66Z" 7/9/2026, 6:05:50 PM
model"openai/gpt-5.6-sol-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4450
moderation_latency(null)
generation_time19254
tokens_prompt46
tokens_completion564
native_tokens_prompt41
native_tokens_completion1535
native_tokens_completion_images0
native_tokens_reasoning1334
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"
usage0.046255
router(null)
provider_responses
0
endpoint_id"a54c5de0-89bf-4ad7-a212-cf977eed918a"
id"resp_09674e6b18cd7f4c016a4fe2febcac8196b4829ef52ba8125f"
is_byokfalse
latency214
model_permaslug"openai/gpt-5.6-sol-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783620350-MgQP38DsUcKE10yPjEkD"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620350-0HoPd4vSCR4QyS4zLNfw"
upstream_id"resp_09674e6b18cd7f4c016a4fe2febcac8196b4829ef52ba8125f"
total_cost0.046255
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
sentences8
wordCounts
020
120
220
320
420
520
620
720