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Run: 2026-07-25-01KYD4NTHJ18SJ5E10CF70E5DK
Run Details
Model:
Muse Spark 1.1 (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
8.8s
Cost:
$0.006649
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 arrived at Blackwood mansion at midnight, rain hammering his old fedora without mercy while thunder cracked overhead loudly. The butler opened the massive oak doors, face pale as death, whispering that master lay murdered upstairs in the library. Marlowe followed silently through marble hallways lined with portraits, each ancestor staring accusingly toward the murder scene upstairs beyond darkness. Lord Blackwood sprawled across his mahogany desk, a silver letter opener protruding brutally from his chest still leaking dark blood. No windows were forced, Marlowe observed, meaning the killer was either family, staff, or already trapped inside this stormy night. Behind him, six suspects gathered in silence, each hiding secrets more dangerous than the murder itself tonight in Blackwood mansion.
created_at
"2026-07-25T17:20:28.733Z"
7/25/2026, 5:20:28 PM
model
"meta/muse-spark-1.1-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
8016
moderation_latency
(null)
generation_time
8684
tokens_prompt
46
tokens_completion
208
native_tokens_prompt
199
native_tokens_completion
1506
native_tokens_completion_images
0
native_tokens_reasoning
1333
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
0.00664925
router
(null)
provider_responses
0
endpoint_id
"b2b9f6f9-8880-41c1-bd0c-867650fd5238"
id
"resp_6a64f05d4628c7da04ac4abe"
is_byok
false
latency
598
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-1785000028-uWLFm0doT6QFCFLBQdkg"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1785000028-KOsFj2QiWEyqDliu1u0k"
upstream_id
"resp_6a64f05d4628c7da04ac4abe"
total_cost
0.00664925
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
6
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20