Run: 2026-09-03-01M1K59PVT0T42X68GK3FEPA8P

Run Details

Duration:
13.7s
Cost:
$0.010427
Provider:
Meta

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
Detective Mara Quinn arrived at Blackwood Manor precisely as midnight rain hammered the crumbling stone facade relentlessly without any mercy. The butler waited beneath flickering porch light, his pale hands clutching a silver tray bearing one unsealed envelope for her. Inside the grand library, Lord Ashcombe lay sprawled across his desk, blood pooling beneath his immaculate white shirt still warm. Quinn noticed shattered glass scattered near the fireplace, despite all windows remaining firmly locked from the inside tonight without exception. Someone had murdered him between ten and eleven, yet every guest claimed complete ignorance regarding his final moments last evening. The envelope on the tray contained only four chilling words: You will be next, Mara written in fresh red ink.
created_at"2026-09-03T08:13:52.384Z" 9/3/2026, 8:13:52 AM
model"meta/muse-spark-1.2-20260805"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency8981
moderation_latency(null)
generation_time13716
tokens_prompt46
tokens_completion254
native_tokens_prompt42
native_tokens_completion2441
native_tokens_completion_images0
native_tokens_reasoning2237
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"auto"
usage0.01042675
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788423232-PfDfjop7KFAC09vhAirn"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788423232-TxuAZW7AOKx21tos0F2Q"
upstream_id"resp_6a992c4687e44826ccfe471d"
provider_responses
0
endpoint_id"ffc8e76e-808a-44d2-bd21-c6ac16e721cb"
id"resp_6a992c4687e44826ccfe471d"
is_byokfalse
latency5706
model_permaslug"meta/muse-spark-1.2-20260805"
provider_name"Meta"
status200
total_cost0.01042675
cache_discount(null)
upstream_inference_cost0
provider_name"Meta"
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
sentences6
wordCounts
020
120
220
320
420
520