Run: 2026-07-25-01KYD6JDYHF5PNWPPSVGYNYHJ0

Run Details

Duration:
9.8s
Cost:
$0.006445
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 lighthouse precisely at midnight, finding the door already ajar despite the raging storm outside. Inside, wealthy shipping magnate Elias Vane lay sprawled across the map table, a brass compass embedded in his chest deeply. The keeper, old Thomas Finch, stood trembling nearby, insisting nobody else had entered since sunset yesterday evening according to him. Mara noticed fresh muddy footprints leading from the victim toward the locked lantern room above suggesting the killer remained inside. Outside, the foghorn wailed mournfully as waves crashed violently against jagged rocks far below the lighthouse during the endless night.
created_at"2026-07-25T17:53:34.679Z" 7/25/2026, 5:53:34 PM
model"meta/muse-spark-1.1-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency8954
moderation_latency(null)
generation_time9764
tokens_prompt46
tokens_completion170
native_tokens_prompt199
native_tokens_completion1458
native_tokens_completion_images0
native_tokens_reasoning1314
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"
usage0.00644525
router(null)
provider_responses
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endpoint_id"b2b9f6f9-8880-41c1-bd0c-867650fd5238"
id"resp_6a64f81f692f9e88425a40df"
is_byokfalse
latency350
model_permaslug"meta/muse-spark-1.1-20260709"
provider_name"Meta"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1785002014-tlz2kMf3NTylSBtSGmzA"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1785002014-42RjLSPMzWI5yGcuCf04"
upstream_id"resp_6a64f81f692f9e88425a40df"
total_cost0.00644525
cache_discount(null)
upstream_inference_cost0
provider_name"Meta"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
320
420