Run: 2026-09-03-01M1K5BTRPC7TMG6FTPDD327PV

Run Details

Duration:
27.4s
Cost:
$0.010788
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 shortly after midnight, hearing rain pounding relentlessly against the ancient stone walls outside. The butler opened the heavy oak door slowly, his pale face trembling as he whispered master lay dead upstairs tonight. Elena followed him through dim candlelit hallway, noticing broken glass scattered near portrait of late Lady Blackwood smiling coldly down. Inside the library, Lord Blackwood slumped over his desk, blood pooling beneath silver letter opener lodged within chest still bleeding. She noticed window wide open, curtains billowing wildly, muddy footprints leading toward garden maze shrouded in thick fog tonight silently.
created_at"2026-09-03T08:15:01.917Z" 9/3/2026, 8:15:01 AM
model"meta/muse-spark-1.3-20260902"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4716
moderation_latency(null)
generation_time27341
tokens_prompt46
tokens_completion246
native_tokens_prompt42
native_tokens_completion2535
native_tokens_completion_images0
native_tokens_reasoning2330
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"
usage0.01078775
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788423301-eW89LrHwswK4rqjdnCPn"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788423301-ygO3fRAxItSkAfKL8spu"
upstream_id"resp_6a992c86749fc221df264f53"
provider_responses
0
endpoint_id"cf4f1b4e-1719-4b65-9111-7dd7635e5a2f"
id"resp_6a992c86749fc221df264f53"
is_byokfalse
latency487
model_permaslug"meta/muse-spark-1.3-20260902"
provider_name"Meta"
status200
total_cost0.01078775
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