Run: 2026-07-25-01KYD5PMB70RNK9WJT0R2HZ5HS

Run Details

Duration:
9.7s
Cost:
$0.007474
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 found the lighthouse keeper dead beneath the iron staircase, rain dripping from his coat onto cold stone. "The body wasn't there when the storm started; I locked this door myself," whispered young Thomas, trembling behind her silhouette. She noticed his boots were perfectly dry, his lamp still burning brightly, and fresh muddy footprints leading outside somewhere tonight. Outside, the foghorn moaned endlessly across black water, but the lighthouse beam itself had been deliberately shattered above them both. Mara knelt down, touching the keeper's clenched fist, revealing a sodden scrap of paper marked with initials J.W. in ink.
created_at"2026-07-25T17:38:23.726Z" 7/25/2026, 5:38:23 PM
model"meta/muse-spark-1.1-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9087
moderation_latency(null)
generation_time9641
tokens_prompt46
tokens_completion166
native_tokens_prompt199
native_tokens_completion1700
native_tokens_completion_images0
native_tokens_reasoning1555
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"
usage0.00747375
router(null)
provider_responses
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endpoint_id"b2b9f6f9-8880-41c1-bd0c-867650fd5238"
id"resp_6a64f490187c245a99fe4f54"
is_byokfalse
latency535
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-1785001103-HMCq0DV9fCoVuNeZbQlV"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1785001103-Syag14UzoxSU5HGkx9lh"
upstream_id"resp_6a64f490187c245a99fe4f54"
total_cost0.00747375
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
sentences5
wordCounts
020
120
220
320
420