Run: 2026-07-25-01KYD5CVBWDE0F6JSNKT0MTENS

Run Details

Duration:
10.5s
Cost:
$0.008774
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 midnight, rain hammering her coat like cold accusations she desperately tried ignoring. The butler waited beneath flickering hallway chandelier, his face pale as untouched snow before sunrise holding one bloodstained silver envelope. Inside the library, Lord Alistair Blackwood lay sprawled across Persian rug, throat elegantly slit, eyes still open watching eternal darkness. Beside his cold hand, a shattered crystal decanter leaked expensive brandy onto priceless first edition books nobody dared ever touch. Mara knelt slowly, noticing faint muddy boot prints leading toward balcony doors still swinging in violent wind outside tonight alone. Somewhere upstairs, a woman screamed, but Mara understood that every guest here had wanted Blackwood dead before midnight struck loudly.
created_at"2026-07-25T17:33:03.235Z" 7/25/2026, 5:33:03 PM
model"meta/muse-spark-1.1-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9734
moderation_latency(null)
generation_time10320
tokens_prompt46
tokens_completion214
native_tokens_prompt199
native_tokens_completion2006
native_tokens_completion_images0
native_tokens_reasoning1831
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"
usage0.00877425
router(null)
provider_responses
0
endpoint_id"b2b9f6f9-8880-41c1-bd0c-867650fd5238"
id"resp_6a64f34ffc79ad3fbfa7455b"
is_byokfalse
latency181
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-1785000783-3OrLl7vSjWBxgVipiTZC"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1785000783-dmEIrhVuclv6sZiRI4Uz"
upstream_id"resp_6a64f34ffc79ad3fbfa7455b"
total_cost0.00877425
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