Run: 2026-09-03-01M1K60AB8VQN4PDGGNA8P5SMK

Run Details

Duration:
10.4s
Cost:
$0.009288
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 hammered cobblestones outside Pembroke Manor as Detective Ellis arrived, coat soaked and hat pulled low against biting wind tonight. Inside, Lady Whitmore lay sprawled across the library rug, her silk dress stained crimson beneath flickering chandelier light softly dimming. The butler, Harrow, stood rigid near the fireplace, his trembling hands clutching a shattered crystal glass stained red with blood. Ellis crouched beside the body, noticing delicate perfume lingering, a single pearlescent button clutched tightly within her still cold palm. Someone had locked every window from inside, yet muddy footprints led from the balcony doors toward the silent lifeless hearth.
created_at"2026-09-03T08:26:13.23Z" 9/3/2026, 8:26:13 AM
model"meta/muse-spark-1.2-20260805"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3527
moderation_latency(null)
generation_time10353
tokens_prompt46
tokens_completion240
native_tokens_prompt42
native_tokens_completion2173
native_tokens_completion_images0
native_tokens_reasoning1961
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"
usage0.00928775
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788423973-GcdR1v4O6V77h6ZaUSN2"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788423973-vuptZ8ntHt0rvReglolv"
upstream_id"resp_6a992f2573981f8cb17340f3"
provider_responses
0
endpoint_id"ffc8e76e-808a-44d2-bd21-c6ac16e721cb"
id"resp_6a992f2573981f8cb17340f3"
is_byokfalse
latency356
model_permaslug"meta/muse-spark-1.2-20260805"
provider_name"Meta"
status200
total_cost0.00928775
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