Run: 2026-09-03-01M1K57QKJ0HQHA1JKZTF93CG4

Run Details

Duration:
27.2s
Cost:
$0.009126
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 the Blackwell estate precisely as midnight rain hammered the ancient stone courtyard relentlessly without mercy. The butler, pale and trembling, led her silently toward the library where Lord Blackwell lay motionless beneath shattered crystal chandelier. Blood pooled darkly around his outstretched hand, staining the priceless Persian rug he had always cherished more than family itself. Mara noticed two distinct wine glasses on the mahogany table, though only one victim occupied the room tonight alone supposedly. Outside thunder cracked loudly, and every guest remaining inside the mansion held secrets worth killing for on this stormy night.
created_at"2026-09-03T08:12:47.607Z" 9/3/2026, 8:12:47 AM
model"meta/muse-spark-1.2-20260805"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency21979
moderation_latency(null)
generation_time27221
tokens_prompt46
tokens_completion224
native_tokens_prompt42
native_tokens_completion2135
native_tokens_completion_images0
native_tokens_reasoning1949
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"
usage0.00912625
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788423167-DySjHEHFJnU7UMNZyxoK"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788423167-1VnAKfyxdoIH3SZhg3HG"
upstream_id"resp_6a992c11a7884df572ed4637"
provider_responses
0
endpoint_id"ffc8e76e-808a-44d2-bd21-c6ac16e721cb"
id"resp_6a992c11a7884df572ed4637"
is_byokfalse
latency18366
model_permaslug"meta/muse-spark-1.2-20260805"
provider_name"Meta"
status200
total_cost0.00912625
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