Run: 2026-03-06-01KK1GR1GQ4MWHHV8F24SG9Z4R

Run Details

Duration:
1.9s
Cost:
$0.000103
Provider:
Inception

Evaluation summary

Score Evaluator
Details Link
84.26% 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 antique manor creaked as twilight slipped through stained glass windows, casting eerie shadows across the marble floor softly late. Inside, the dining hall was dim, illuminated only by a flickering candle perched precariously atop the grandfather clock silently. The butler, a stern man named Reginald, clutched a silver spoon, his eyes darting nervously through the hallway and silently. At the center, a portrait of the late patriarch stared back, its eyes seeming to follow every movement in silence. Suddenly, a blood-curdling scream echoed, and the lights flickered, plunging the manor into deep darkness for one saw anywhere.
created_at"2026-03-06T12:07:51.07Z" 3/6/2026, 12:07:51 PM
model"inception/mercury"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1830
moderation_latency(null)
generation_time1851
tokens_prompt46
tokens_completion159
native_tokens_prompt47
native_tokens_completion127
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached17
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
usage0.000103175
router(null)
provider_responses
0
endpoint_id"da1082ea-721e-460e-b330-034ae7aefc7f"
id"chatcmpl-cb9d74b5-b45d-4d15-982f-156a46d7aa5d"
is_byokfalse
latency109
model_permaslug"inception/mercury"
provider_name"Inception"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1772798871-lMXinhJuc3wQjz3KST5x"
upstream_id"chatcmpl-cb9d74b5-b45d-4d15-982f-156a46d7aa5d"
total_cost0.000103175
cache_discount0.000003825
upstream_inference_cost0
provider_name"Inception"

Evaluation details

Result Evaluator Details Meta Data
84.26% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
119
220
320
419