Run: 2026-04-25-01KQ2DNE81BNYRVTN9NTBPTPHF

Run Details

Duration:
7.2s
Cost:
$0.000261
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
98.01% 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 clock struck midnight, its chime swallowed by fog. Inspector Hart pulled his coat tight against the damp chill. A single gas lamp flickered outside the abandoned theatre door. Blood had dried in a jagged line across the cobblestones. He knelt and touched the stain, its coldness confirming death. Inside, the stage lights were still burning a weak yellow. A woman lay centre stage, draped in a crimson gown. Her glassy eyes stared up at the painted plaster ceiling. A single pearl earring rested in her pale, open palm. The other was missing, a tiny clue in the hush. Hart's partner, Graves, emerged from shadows with a silent nod. Neither man spoke the name they both already knew. The Phantom of the Majestic had claimed another soul tonight.
created_at"2026-04-25T13:36:01.797Z" 4/25/2026, 1:36:01 PM
model"deepseek/deepseek-v4-pro-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency742
moderation_latency(null)
generation_time7173
tokens_prompt46
tokens_completion333
native_tokens_prompt39
native_tokens_completion280
native_tokens_completion_images(null)
native_tokens_reasoning117
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"
usage0.000260565
router(null)
provider_responses
0
endpoint_id"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id"42c48e59-235e-45ea-9de1-be5e91c052c2"
is_byokfalse
latency278
model_permaslug"deepseek/deepseek-v4-pro-20260423"
provider_name"DeepSeek"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777124161-jnlrnh3C6wmQMgrGETAk"
session_id(null)
api_type"completions"
id"gen-1777124161-5oyZJX5jn2SYtlp6aaGl"
upstream_id"42c48e59-235e-45ea-9de1-be5e91c052c2"
total_cost0.000260565
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
98.01% Matches word count n/a
neededCleanfalse
sentences13
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
119
1210