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Run: 2026-07-25-01KYD6JDYHF5PNWPPSVGYNYHJ0
Run Details
Model:
Muse Spark 1.1 (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
9.8s
Cost:
$0.006445
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 arrived at the lighthouse precisely at midnight, finding the door already ajar despite the raging storm outside. Inside, wealthy shipping magnate Elias Vane lay sprawled across the map table, a brass compass embedded in his chest deeply. The keeper, old Thomas Finch, stood trembling nearby, insisting nobody else had entered since sunset yesterday evening according to him. Mara noticed fresh muddy footprints leading from the victim toward the locked lantern room above suggesting the killer remained inside. Outside, the foghorn wailed mournfully as waves crashed violently against jagged rocks far below the lighthouse during the endless night.
created_at
"2026-07-25T17:53:34.679Z"
7/25/2026, 5:53:34 PM
model
"meta/muse-spark-1.1-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
8954
moderation_latency
(null)
generation_time
9764
tokens_prompt
46
tokens_completion
170
native_tokens_prompt
199
native_tokens_completion
1458
native_tokens_completion_images
0
native_tokens_reasoning
1314
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
0.00644525
router
(null)
provider_responses
0
endpoint_id
"b2b9f6f9-8880-41c1-bd0c-867650fd5238"
id
"resp_6a64f81f692f9e88425a40df"
is_byok
false
latency
350
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-1785002014-tlz2kMf3NTylSBtSGmzA"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1785002014-42RjLSPMzWI5yGcuCf04"
upstream_id
"resp_6a64f81f692f9e88425a40df"
total_cost
0.00644525
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