Run: 2026-09-03-01M1K543GWR8CQCMW660HR640M

Run Details

Model:
Muse Spark 1.3 (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
16.0s
Cost:
$0.009500
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
Detective Mara Quinn arrived at Blackwood Manor just after midnight, rain soaking her coat and chilling weary bones completely tonight. The nervous butler waited beneath flickering porch lights, clutching an empty silver tray while avoiding direct eye contact entirely tonight. Inside, Lord Harrington lay sprawled across the Persian rug, a shattered crystal glass beside his pale cold outstretched right hand. A faint bitter almond scent lingered heavily in the air, suggesting poison rather than natural causes to trained investigators tonight. Quinn knelt beside the body slowly, noting the locked doors, closed windows, and five silent suspects watching her every move.
created_at"2026-09-03T08:10:48.738Z" 9/3/2026, 8:10:48 AM
model"meta/muse-spark-1.3-20260902"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3783
moderation_latency(null)
generation_time16000
tokens_prompt46
tokens_completion214
native_tokens_prompt42
native_tokens_completion2232
native_tokens_completion_images0
native_tokens_reasoning2056
native_tokens_cached35
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"auto"
usage0.0095
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788423048-j22XMvRO9Xake7OxxZgs"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788423048-aYdCwl8a8vU7df3KDfhV"
upstream_id"resp_6a992b89e676af52e1c34a83"
provider_responses
0
endpoint_id"cf4f1b4e-1719-4b65-9111-7dd7635e5a2f"
id"resp_6a992b89e676af52e1c34a83"
is_byokfalse
latency634
model_permaslug"meta/muse-spark-1.3-20260902"
provider_name"Meta"
status200
total_cost0.0095
cache_discount0.0000385
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
sentences5
wordCounts
020
120
220
320
420