Run: 2026-11-11-01M7555B30JJ6EJ0D71Q34D9SP

Run Details

Model:
Muse Ember (Reasoning, Max)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
4.4s
Cost:
$0.000734
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

AI
When the detective arrived at the old mansion after midnight, rain hammered the broken windows and chilling silence filled hallway. The victim lay motionless beside the grand staircase, his polished silver revolver still clutched tightly in a cold, trembling hand. Three guests claimed they were sleeping soundly upstairs, yet each one trembled noticeably whenever officers mentioned the locked library door. Someone had entered that forbidden room before dawn, disturbed the family portrait, and deliberately concealed a bloodstained letter threatening revenge.
created_at"2026-11-11T11:16:18.155Z" 11/11/2026, 11:16:18 AM
model"meta/muse-ember-20261109"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3175
moderation_latency(null)
generation_time4410
tokens_prompt46
tokens_completion190
native_tokens_prompt43
native_tokens_completion1459
native_tokens_completion_images0
native_tokens_reasoning1309
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
service_tier"default"
usage0.0007338
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.22.2; linux; x64))"
http_referer(null)
request_id"req-1794395778-s4UL83OooTUyNkRrLkCS"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1794395778-UnvqMXrJedzAPmAy0XoA"
upstream_id"resp_6af44e84b8c6e52165ae463f"
provider_responses
0
endpoint_id"ea8469c2-ddf8-4985-8cf2-f5dc7e63e14c"
id"resp_6af44e84b8c6e52165ae463f"
is_byokfalse
latency2312
model_permaslug"meta/muse-ember-20261109"
provider_name"Meta"
status200
total_cost0.0007338
cache_discount(null)
upstream_inference_cost0
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
neededCleanfalse
sentences4
wordCounts
020
120
220
320