Run: 2026-09-03-01M1K5G939BMQ4FV3F5A8Z81BS

Run Details

Duration:
10.2s
Cost:
$0.010274
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
Rain lashed the isolated Cliffside Manor as Detective Mara Quinn arrived at midnight, answering a frantic telephone call for help. The butler opened the heavy oak door, his face pale, hands trembling violently despite his practiced composure and forced dignity. Inside, chandeliers flickered above the grand staircase where Lord Alistair Finch lay motionless, blood pooling beneath his head like wine. Three guests stood silently nearby, their evening gowns and tuxedos stained with rain, champagne, and something darker than anyone admitted. Mara knelt beside the body, noting the absence of a weapon and the faint smell of bitter almonds everywhere nearby. Someone had locked all the doors from the inside, meaning the killer remained trapped among them tonight without any escape.
created_at"2026-09-03T08:17:27.665Z" 9/3/2026, 8:17:27 AM
model"meta/muse-spark-1.2-20260805"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3205
moderation_latency(null)
generation_time10184
tokens_prompt46
tokens_completion221
native_tokens_prompt42
native_tokens_completion2405
native_tokens_completion_images0
native_tokens_reasoning2213
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"
usage0.01027375
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788423447-5BBRVHD6C371Pe70gMWG"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788423447-3nVD0iSOLdmihnlgLpsl"
upstream_id"resp_6a992d183be397479e5c4f68"
provider_responses
0
endpoint_id"ffc8e76e-808a-44d2-bd21-c6ac16e721cb"
id"resp_6a992d183be397479e5c4f68"
is_byokfalse
latency1510
model_permaslug"meta/muse-spark-1.2-20260805"
provider_name"Meta"
status200
total_cost0.01027375
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
sentences6
wordCounts
020
120
220
320
420
520