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Run: 2026-07-25-01KYD5PMB70RNK9WJT0R2HZ5HS
Run Details
Model:
Muse Spark 1.1 (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
9.7s
Cost:
$0.007474
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 Mara Quinn found the lighthouse keeper dead beneath the iron staircase, rain dripping from his coat onto cold stone. "The body wasn't there when the storm started; I locked this door myself," whispered young Thomas, trembling behind her silhouette. She noticed his boots were perfectly dry, his lamp still burning brightly, and fresh muddy footprints leading outside somewhere tonight. Outside, the foghorn moaned endlessly across black water, but the lighthouse beam itself had been deliberately shattered above them both. Mara knelt down, touching the keeper's clenched fist, revealing a sodden scrap of paper marked with initials J.W. in ink.
created_at
"2026-07-25T17:38:23.726Z"
7/25/2026, 5:38:23 PM
model
"meta/muse-spark-1.1-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
9087
moderation_latency
(null)
generation_time
9641
tokens_prompt
46
tokens_completion
166
native_tokens_prompt
199
native_tokens_completion
1700
native_tokens_completion_images
0
native_tokens_reasoning
1555
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
0.00747375
router
(null)
provider_responses
0
endpoint_id
"b2b9f6f9-8880-41c1-bd0c-867650fd5238"
id
"resp_6a64f490187c245a99fe4f54"
is_byok
false
latency
535
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-1785001103-HMCq0DV9fCoVuNeZbQlV"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1785001103-Syag14UzoxSU5HGkx9lh"
upstream_id
"resp_6a64f490187c245a99fe4f54"
total_cost
0.00747375
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