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Run: 2026-11-11-01M753T7N0DT471GBWW45S5JF9
Run Details
Model:
Muse Ember (Reasoning, Max)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
3.2s
Cost:
$0.000875
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 the coastal road all night, but nobody noticed fresh footprints leading toward the dark lighthouse door that morning. Detective Marlow arrived at dawn, carrying a notebook, while gulls circled silently above the lighthouse's rusted lantern room that day. The victim lay motionless beside an overturned chair, one hand still gripping a cracked photograph of a younger smiling woman. The keeper claimed he had heard strange voices whispering through the radio shortly before midnight, just before everything went silent. Marlow searched the tower stairs slowly, finding a torn glove, a brass key, and traces of muddy bootprints everywhere nearby. When the coroner lifted the photograph, Marlow recognized the woman staring back from the faded picture as his missing sister.
created_at
"2026-11-11T10:52:45.614Z"
11/11/2026, 10:52:45 AM
model
"meta/muse-ember-20261109"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1628
moderation_latency
(null)
generation_time
3209
tokens_prompt
46
tokens_completion
233
native_tokens_prompt
43
native_tokens_completion
1742
native_tokens_completion_images
0
native_tokens_reasoning
1554
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
"default"
usage
0.0008753
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.22.2; linux; x64))"
http_referer
(null)
request_id
"req-1794394365-JuymTOj7hEiYdla9c2Oc"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1794394365-n20gbj4w7ZUpy6bKkk48"
upstream_id
"resp_6af448fe6954d1640f0c4b98"
provider_responses
0
endpoint_id
"ea8469c2-ddf8-4985-8cf2-f5dc7e63e14c"
id
"resp_6af448fe6954d1640f0c4b98"
is_byok
false
latency
666
model_permaslug
"meta/muse-ember-20261109"
provider_name
"Meta"
status
200
total_cost
0.0008753
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
6
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20