Run: 2026-11-11-01M75617SPF0ZQJZ3RBZRCAFX3

Run Details

Duration:
2.8s
Cost:
$0.000996
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 midnight to find the Victorian mansion silent, dark, and welcoming despite gathering storm clouds overhead. The body lay in the library beneath overturned shelves, surrounded by scattered letters, broken glass, and one polished brass candlestick. Everyone claimed they heard nothing, yet each guest suddenly remembered a different mysterious sound echoing through the long upstairs hallway. As Mara examined the victim's watch, its hands stopped at three fourteen, matching the time erased from the household ledger. Mara smiled grimly, closed her notebook, and whispered that the murderer had already made one fatal mistake tonight before sunrise.
created_at"2026-11-11T11:31:32.287Z" 11/11/2026, 11:31:32 AM
model"meta/muse-ember-20261109"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1985
moderation_latency(null)
generation_time2793
tokens_prompt46
tokens_completion195
native_tokens_prompt43
native_tokens_completion1983
native_tokens_completion_images0
native_tokens_reasoning1832
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"default"
usage0.0009958
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.22.2; linux; x64))"
http_referer(null)
request_id"req-1794396692-pOvTyrpY4SjYLhYVXMCq"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1794396692-8hmCr9SQkZZC1wkVhw42"
upstream_id"resp_6af45214a860097c85ff41db"
provider_responses
0
endpoint_id"ea8469c2-ddf8-4985-8cf2-f5dc7e63e14c"
id"resp_6af45214a860097c85ff41db"
is_byokfalse
latency454
model_permaslug"meta/muse-ember-20261109"
provider_name"Meta"
status200
total_cost0.0009958
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