Run: 2026-09-03-01M1K5BPP409PHQBPCN8YPM3SP

Run Details

Model:
Muse Spark 1.3 (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
30.6s
Cost:
$0.007677
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
The rain hammered the tall windows of Blackwood Hall as twelve strangers gathered around the long oak dining table silently. Candles guttered low beside untouched wine glasses while thunder shook portraits watching from shadowed walls above with silent accusing eyes. Suddenly heiress Vivian Crane stood abruptly, announced someone among them was a murderer, then collapsed onto cold marble floor lifelessly. Detective Elias Ward checked her pulse slowly, looked up grimly, and declared the locked doors hid a calculating killer tonight.
created_at"2026-09-03T08:14:57.738Z" 9/3/2026, 8:14:57 AM
model"meta/muse-spark-1.3-20260902"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6219
moderation_latency(null)
generation_time30624
tokens_prompt46
tokens_completion175
native_tokens_prompt42
native_tokens_completion1794
native_tokens_completion_images0
native_tokens_reasoning1644
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"
usage0.007677
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788423297-A3NAztUTt0qYqGkw8Pcj"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788423297-dDF3o5KVe5hJmkiLdgNc"
upstream_id"resp_6a992c82b57fa4e08ede4fdd"
provider_responses
0
endpoint_id"cf4f1b4e-1719-4b65-9111-7dd7635e5a2f"
id"resp_6a992c82b57fa4e08ede4fdd"
is_byokfalse
latency874
model_permaslug"meta/muse-spark-1.3-20260902"
provider_name"Meta"
status200
total_cost0.007677
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