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Run: 2026-07-25-01KYD59EQ3W8H0FS7P9525RX33
Run Details
Model:
Muse Spark 1.1 (Reasoning, Minimal)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
5.8s
Cost:
$0.004171
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
Detective Marlowe entered the abandoned library precisely at midnight, noticing shattered glass scattered near mahogany shelves under pale moonlight tonight. The victim lay sprawled across ancient Chesterfield, silk cravat tightened cruelly, eyes frozen wide with terror and silent accusation lingered. Marlowe knelt carefully, observing faint fingerprints dusted upon brass candlestick, recently extinguished beside overturned brandy decanter still dripping amber liquid. A sharp draft slammed oak doors behind him, extinguishing his lantern, plunging room into suffocating gloom and distant footsteps echoed. He whispered urgently, someone else remains inside building, watching us murderously, waiting patiently for another opportunity tonight within these shadows.
created_at
"2026-07-25T17:31:11.978Z"
7/25/2026, 5:31:11 PM
model
"meta/muse-spark-1.1-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
5102
moderation_latency
(null)
generation_time
5735
tokens_prompt
46
tokens_completion
194
native_tokens_prompt
199
native_tokens_completion
923
native_tokens_completion_images
0
native_tokens_reasoning
764
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
0.0041715
router
(null)
provider_responses
0
endpoint_id
"b2b9f6f9-8880-41c1-bd0c-867650fd5238"
id
"resp_6a64f2e0f2c06525e018404b"
is_byok
false
latency
453
model_permaslug
"meta/muse-spark-1.1-20260709"
provider_name
"Meta"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer
(null)
request_id
"req-1785000671-Cl8dPnzn2jdx1MXLdG20"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1785000671-jJiV4Hwyuqx5M4qFLg9d"
upstream_id
"resp_6a64f2e0f2c06525e018404b"
total_cost
0.0041715
cache_discount
(null)
upstream_inference_cost
0
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
neededClean
false
sentences
5
wordCounts
0
20
1
20
2
20
3
20
4
20