Run: 2026-03-06-01KK1H34S88WGHCF1N08B7YAG0

Run Details

Duration:
1.9s
Cost:
$0.000112
Provider:
Inception

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 fog rolled over cobblestone streets, swallowing the last glimmers of twilight, as a lone violinist played mournful notes softly. Inside the grand manor, a thunderous storm rattled the windows, yet the clock struck midnight with eerie precision and silence. The butler, unseen, slipped through the hallway, his footsteps echoing, as he approached the dimly lit study for the secret. A single candle flickered, casting trembling shadows across the mahogany desk, where a bloodstained letter lay open for the investigator. At the desk, the victim's eyes stared blankly, the room silent except for the distant thunder's rumble through the night.
created_at"2026-03-06T12:13:54.863Z" 3/6/2026, 12:13:54 PM
model"inception/mercury"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1756
moderation_latency(null)
generation_time1817
tokens_prompt46
tokens_completion167
native_tokens_prompt47
native_tokens_completion139
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"
usage0.000112175
router(null)
provider_responses
0
endpoint_id"da1082ea-721e-460e-b330-034ae7aefc7f"
id"chatcmpl-ae3eb307-7911-492f-8ef6-dddf4ba35f89"
is_byokfalse
latency47
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-1772799234-WJ1k1c2cUSvG30qp1Z3B"
upstream_id"chatcmpl-ae3eb307-7911-492f-8ef6-dddf4ba35f89"
total_cost0.000112175
cache_discount0.000003825
upstream_inference_cost0
provider_name"Inception"

Evaluation details

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