NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-09-03-01M1K60AB8VQN4PDGGNA8P5SMK
Run Details
Model:
Muse Spark 1.2 (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
10.4s
Cost:
$0.009288
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
Messages
Meta
AI
Rain hammered cobblestones outside Pembroke Manor as Detective Ellis arrived, coat soaked and hat pulled low against biting wind tonight. Inside, Lady Whitmore lay sprawled across the library rug, her silk dress stained crimson beneath flickering chandelier light softly dimming. The butler, Harrow, stood rigid near the fireplace, his trembling hands clutching a shattered crystal glass stained red with blood. Ellis crouched beside the body, noticing delicate perfume lingering, a single pearlescent button clutched tightly within her still cold palm. Someone had locked every window from inside, yet muddy footprints led from the balcony doors toward the silent lifeless hearth.
created_at
"2026-09-03T08:26:13.23Z"
9/3/2026, 8:26:13 AM
model
"meta/muse-spark-1.2-20260805"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3527
moderation_latency
(null)
generation_time
10353
tokens_prompt
46
tokens_completion
240
native_tokens_prompt
42
native_tokens_completion
2173
native_tokens_completion_images
0
native_tokens_reasoning
1961
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"completed"
service_tier
"auto"
usage
0.00928775
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer
(null)
request_id
"req-1788423973-GcdR1v4O6V77h6ZaUSN2"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1788423973-vuptZ8ntHt0rvReglolv"
upstream_id
"resp_6a992f2573981f8cb17340f3"
provider_responses
0
endpoint_id
"ffc8e76e-808a-44d2-bd21-c6ac16e721cb"
id
"resp_6a992f2573981f8cb17340f3"
is_byok
false
latency
356
model_permaslug
"meta/muse-spark-1.2-20260805"
provider_name
"Meta"
status
200
total_cost
0.00928775
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Meta"
response_cache_source_id
(null)
data_region
"global"
workspace_id
"97e315e5-d303-487d-83c1-83180e8a13d4"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
20
1
20
2
20
3
20
4
20