Run: 2026-09-03-01M1K51708Z38K3YQ06XTQ1CK5

Run Details

Model:
Muse Spark 1.3 (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
20.8s
Cost:
$0.010125
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 Elena Marsh arrived at Blackwood Manor just before midnight during the fiercest thunderstorm in decades feeling deep cold unease. The massive oak doors stood wide open revealing a silent candlelit foyer splattered with fresh dark red blood everywhere tonight. Inside, Lord Harrington lay sprawled across marble stairs, a silver dagger protruding sharply from his still chest in eerie silence. Seven frightened guests huddled together near the fireplace, each avoiding eye contact while thunder shook the ancient windows violently outside. Marsh knelt beside the body, noticed the stopped grandfather clock, and realized every suspect had lied about midnight already tonight.
created_at"2026-09-03T08:09:14.001Z" 9/3/2026, 8:09:14 AM
model"meta/muse-spark-1.3-20260902"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5277
moderation_latency(null)
generation_time20758
tokens_prompt46
tokens_completion240
native_tokens_prompt42
native_tokens_completion2370
native_tokens_completion_images0
native_tokens_reasoning2165
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"auto"
usage0.010125
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788422954-CUDe0LiZL4Btt9PU4Iqv"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788422954-BM0vnEBDywnhLtXvGrhV"
upstream_id"resp_6a992b2a9c3760264c7b4879"
provider_responses
0
endpoint_id"cf4f1b4e-1719-4b65-9111-7dd7635e5a2f"
id"resp_6a992b2a9c3760264c7b4879"
is_byokfalse
latency776
model_permaslug"meta/muse-spark-1.3-20260902"
provider_name"Meta"
status200
total_cost0.010125
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
sentences5
wordCounts
020
120
220
320
420