Run: 2026-10-13-01M4TAPFDCD10DCGWXJFTX6V66

Run Details

Duration:
11.3s
Cost:
$0.051888
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
The rain hammered against the library windows while Detective Mara Voss stared at the body slumped over the oak desk. A silver letter opener protruded from his back and dark blood pooled slowly across scattered papers, invoices, letters and photographs. Beside his outstretched hand lay a shattered teacup its contents steaming despite the cold draft creeping beneath the locked door. Three guests waited in the hallway exchanging nervous glances while pretending not to notice the footprints leading toward the staircase. Mara crouched, carefully lifted one photograph and recognized herself standing beside the victim exactly twenty years before that summer night. Then the dead man moved, his fingers tapped twice upon the desk and every frightened witness inside the room screamed.
created_at"2026-10-13T09:50:00.119Z" 10/13/2026, 9:50:00 AM
model"meta/muse-wonder-20261012"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2573
moderation_latency(null)
generation_time11223
tokens_prompt46
tokens_completion269
native_tokens_prompt42
native_tokens_completion2586
native_tokens_completion_images0
native_tokens_reasoning2360
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"
usage0.051888
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791885000-xDri6grLlO5wOFk9fmnB"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791885000-TCWfAxElEUnBKIAWM4cu"
upstream_id"resp_6acdfec838a11e2037054e74"
provider_responses
0
endpoint_id"1232618d-ebfe-4338-9b68-d9127a57c8dd"
id"resp_6acdfec838a11e2037054e74"
is_byokfalse
latency762
model_permaslug"meta/muse-wonder-20261012"
provider_name"Meta"
status200
total_cost0.051888
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