Run: 2026-07-25-01KYD4NTHJ18SJ5E10CF70E5DK

Run Details

Duration:
8.8s
Cost:
$0.006649
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 Marlowe arrived at Blackwood mansion at midnight, rain hammering his old fedora without mercy while thunder cracked overhead loudly. The butler opened the massive oak doors, face pale as death, whispering that master lay murdered upstairs in the library. Marlowe followed silently through marble hallways lined with portraits, each ancestor staring accusingly toward the murder scene upstairs beyond darkness. Lord Blackwood sprawled across his mahogany desk, a silver letter opener protruding brutally from his chest still leaking dark blood. No windows were forced, Marlowe observed, meaning the killer was either family, staff, or already trapped inside this stormy night. Behind him, six suspects gathered in silence, each hiding secrets more dangerous than the murder itself tonight in Blackwood mansion.
created_at"2026-07-25T17:20:28.733Z" 7/25/2026, 5:20:28 PM
model"meta/muse-spark-1.1-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency8016
moderation_latency(null)
generation_time8684
tokens_prompt46
tokens_completion208
native_tokens_prompt199
native_tokens_completion1506
native_tokens_completion_images0
native_tokens_reasoning1333
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"
usage0.00664925
router(null)
provider_responses
0
endpoint_id"b2b9f6f9-8880-41c1-bd0c-867650fd5238"
id"resp_6a64f05d4628c7da04ac4abe"
is_byokfalse
latency598
model_permaslug"meta/muse-spark-1.1-20260709"
provider_name"Meta"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1785000028-uWLFm0doT6QFCFLBQdkg"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1785000028-KOsFj2QiWEyqDliu1u0k"
upstream_id"resp_6a64f05d4628c7da04ac4abe"
total_cost0.00664925
cache_discount(null)
upstream_inference_cost0
provider_name"Meta"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520