Run: 2026-07-25-01KYD6Z86F6KHNKAQECE6QQ6T3

Run Details

Duration:
11.1s
Cost:
$0.009080
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 Manor precisely as thunder cracked violently across the desolate, stormy midnight sky above his shoulders. The butler, pale and trembling uncontrollably, opened the heavy oak doors without uttering a single intelligible word to anyone listening. Inside the library, Lord Harrington lay sprawled upon expensive Persian carpet, blood pooling beneath his lifeless chest like spilled wine. Marlowe knelt beside the body, noting the absence of any visible weapon or forced entry nearby despite the violent struggle. Someone had meticulously arranged seven porcelain ravens around the corpse, each facing outward toward the shattered window expecting imminent dawn. From upstairs, a child's laughter echoed suddenly, though Harrington had supposedly lived completely alone for decades according to every record.
created_at"2026-07-25T18:00:34.778Z" 7/25/2026, 6:00:34 PM
model"meta/muse-spark-1.1-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency10368
moderation_latency(null)
generation_time11061
tokens_prompt46
tokens_completion214
native_tokens_prompt199
native_tokens_completion2078
native_tokens_completion_images0
native_tokens_reasoning1906
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"
usage0.00908025
router(null)
provider_responses
0
endpoint_id"b2b9f6f9-8880-41c1-bd0c-867650fd5238"
id"resp_6a64f9c3fa7c482469624e72"
is_byokfalse
latency289
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-1785002434-LxvTowAupBzKEBU6q3vs"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1785002434-7p93vQHwEUPYxFkkSh7p"
upstream_id"resp_6a64f9c3fa7c482469624e72"
total_cost0.00908025
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