Run: 2026-09-03-01M1KBH2CD28723P2EJABCTRNR

Run Details

Duration:
12.0s
Cost:
$0.001040
Provider:
StreamLake

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 cold November rain hammered the ancient slate rooftops of Blackwater while the old church clock struck precisely nine sharp. Inside the manor, Lady Ashworth lay motionless on the Persian rug, her emerald gown now soaked a dark deep crimson. A single candelabra flickered on the marble mantle, casting monstrous twisting shadows across the high blood-spattered walls and low ceiling. The elderly butler stood deathly pale at the doorway, his white gloves trembling and his eyes fixed still upon her. Outside, a black carriage clattered to a sudden halt, and the inspector's heavy boots splashed through the muddy wet lane. He paused at the rusted iron gate, noting the single fresh footprint beside the gardener's forgotten trowel and small rake. No one had reported the murder yet, but the bright blood on the window pane told its own silent story.
created_at"2026-09-03T10:02:45.028Z" 9/3/2026, 10:02:45 AM
model"deepseek/deepseek-v4-flash-20260731"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1115
moderation_latency(null)
generation_time11886
tokens_prompt46
tokens_completion2389
native_tokens_prompt118
native_tokens_completion2587
native_tokens_completion_images(null)
native_tokens_reasoning2404
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)
usage0.001040028
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788429765-EDEkmJsDF2QdSXnw6Cp1"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788429765-aThyHjgNcAYsRwTpznR3"
upstream_id"req-c3iz3u-1788429765244754706"
provider_responses
0
endpoint_id"d880a270-04ff-479c-b312-6246c0f985b0"
id"req-c3iz3u-1788429765244754706"
is_byokfalse
latency1115
model_permaslug"deepseek/deepseek-v4-flash-20260731"
provider_name"StreamLake"
status200
total_cost0.001040028
cache_discount(null)
upstream_inference_cost0
provider_name"StreamLake"
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
sentences7
wordCounts
020
120
220
320
420
520
620