Run: 2026-04-25-01KQ2GJQXX6XZ7M4F47EQ78ACY

Run Details

Duration:
2.2s
Cost:
$0.000038
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
47.70% 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 mahogany clock chimed seven, a hollow sound. Doctor Alistair found him slumped over his desk. A letter opener protruded from Marcus Webb's chest. Rain streaked the window like tears of shattered glass. The study smelled of blood and old rosewater. A single playing card lay near the victim's hand. It was the ace of spades, perfectly centered. No forced entry, no struggle, just silent, violent precision. The doctor's breath caught, a sharp, shallow intake. Thunder rolled, as if sealing the scene's grim truth.
created_at"2026-04-25T14:26:59.138Z" 4/25/2026, 2:26:59 PM
model"deepseek/deepseek-v4-flash-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency606
moderation_latency(null)
generation_time2110
tokens_prompt46
tokens_completion129
native_tokens_prompt39
native_tokens_completion115
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.00003766
router(null)
provider_responses
0
endpoint_id"722e0746-2034-4d6e-a08f-e6271849ee9e"
id"8323096e-b181-4a09-86aa-45dbd5649a39"
is_byokfalse
latency278
model_permaslug"deepseek/deepseek-v4-flash-20260423"
provider_name"DeepSeek"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777127219-3zT3IbHkEmyeCfqfWqs2"
session_id(null)
api_type"completions"
id"gen-1777127219-x0EVYgz5QXRxBZJTKpme"
upstream_id"8323096e-b181-4a09-86aa-45dbd5649a39"
total_cost0.00003766
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
47.70% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
08
18
28
39
48
59
68
79
88
99