Run: 2026-04-25-01KQ2JPNS7VVQ8YPYGYQS2PM4P

Run Details

Model:
DeepSeek V4 Flash
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
1.2s
Cost:
$0.000014
Provider:
DeepSeek

Evaluation summary

Score Evaluator
Details Link
88.94% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The library clock struck midnight. A body lay upon the rug. Bookshelves cast long, jagged shadows. No one had heard the shot.
created_at"2026-04-25T15:04:05.163Z" 4/25/2026, 3:04:05 PM
model"deepseek/deepseek-v4-flash-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency640
moderation_latency(null)
generation_time1114
tokens_prompt46
tokens_completion34
native_tokens_prompt39
native_tokens_completion30
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"
usage0.00001386
router(null)
provider_responses
0
endpoint_id"722e0746-2034-4d6e-a08f-e6271849ee9e"
id"a6c8779e-1813-4a87-8927-1e84ee17ee28"
is_byokfalse
latency280
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-1777129445-FKaCKwdzHBo6GIhY1j2q"
session_id(null)
api_type"completions"
id"gen-1777129445-hi5WEdsyNEjFlP4o38a4"
upstream_id"a6c8779e-1813-4a87-8927-1e84ee17ee28"
total_cost0.00001386
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
88.94% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
05
16
25
36