Run: 2026-09-03-01M1KCGFA33W2FYTKX4QX9XZ56

Run Details

Duration:
19.7s
Cost:
$0.006704
Provider:
CoreWeave

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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The old mansion stood silent beneath the full moon's glow. Detective Elara Maine stepped over the threshold with cautious breath. A single candle flickered on the mahogany table before her. The air smelled of rain, old paper, and fresh blood. A woman's body lay crumpled near the cold fireplace stones. Her lifeless fingers still clutched a torn and bloodstained letter. Detective Maine knelt beside the body and studied the wound. Behind her, the heavy front door slammed without a hand. She did not flinch, only lowered her voice to silence. The murderer was still inside, watching from the shadows above.
created_at"2026-09-03T10:19:54.077Z" 9/3/2026, 10:19:54 AM
model"deepseek/deepseek-v4-pro-20260813"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency334
moderation_latency(null)
generation_time19685
tokens_prompt46
tokens_completion1696
native_tokens_prompt118
native_tokens_completion1654
native_tokens_completion_images(null)
native_tokens_reasoning1544
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"stop"
service_tier(null)
usage0.00670442
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788430794-LQ1x0U1pkrhIwwqa3rQJ"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788430794-2hqxChl7dG188RkROvXN"
upstream_id"chatcmpl-a987cec2-8ff0-498c-a19e-c42e7d5129da"
provider_responses
0
endpoint_id"15560c07-2edc-40a6-b5ee-30819e66728a"
id"chatcmpl-a987cec2-8ff0-498c-a19e-c42e7d5129da"
is_byokfalse
latency197
model_permaslug"deepseek/deepseek-v4-pro-20260813"
provider_name"CoreWeave"
status200
total_cost0.00670442
cache_discount(null)
upstream_inference_cost0
provider_name"CoreWeave"
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
sentences10
wordCounts
010
110
210
310
410
510
610
710
810
910