Run: 2026-07-25-01KYD77ZD3M8Z2294CZS1WRR2A

Run Details

Model:
Muse Spark 1.1 (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
9.7s
Cost:
$0.007563
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 at midnight, rain hammering her trench coat relentlessly against the howling wind. The butler stood frozen beside the library fireplace, staring at Lord Ashworth's corpse sprawled across Persian rug in expectant silence. Mara knelt, noting no blood, no struggle, only faint almond scent lingering near his parted lips ominously in still air. Someone in this isolated, storm-trapped household had poisoned him, and everyone present possessed compelling motive tonight despite feigned innocent shock. Outside, thunder cracked sharply, extinguishing chandelier light, plunging suspects and detective into suffocating, absolute, terrifying darkness together without warning whatsoever.
created_at"2026-07-25T18:05:20.681Z" 7/25/2026, 6:05:20 PM
model"meta/muse-spark-1.1-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency8997
moderation_latency(null)
generation_time9620
tokens_prompt46
tokens_completion187
native_tokens_prompt199
native_tokens_completion1721
native_tokens_completion_images0
native_tokens_reasoning1567
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"
usage0.007563
router(null)
provider_responses
0
endpoint_id"b2b9f6f9-8880-41c1-bd0c-867650fd5238"
id"resp_6a64fae0396bb53c0f4a4919"
is_byokfalse
latency239
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-1785002720-LfzrOlFg8YIVWU4yg0Jm"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1785002720-XgAKSdBVrf7X2bfFA9GU"
upstream_id"resp_6a64fae0396bb53c0f4a4919"
total_cost0.007563
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