Run: 2026-07-25-01KYCT08SQX3GDQD42XFF5JYBC

Run Details

Duration:
795ms
Cost:
$0.000221
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
13.53% 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
Detective Vance stared coldly at the bloody corpse lying motionless upon the damp and freezing cobblestone alley floor. Heavy midnight fog rolled thickly through the narrow Victorian streets while distant church bells tolled very slowly indeed. No footprints disturbed the fresh winter frost surrounding the unfortunate victim except for one set of heavy boots. He carefully knelt down beside the broken body to examine the fatal wound inflicted by an unknown assailant.
created_at"2026-07-25T14:13:56.669Z" 7/25/2026, 2:13:56 PM
model"google/gemini-3.5-flash-lite-20260721"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency277
moderation_latency(null)
generation_time760
tokens_prompt46
tokens_completion120
native_tokens_prompt38
native_tokens_completion84
native_tokens_completion_images0
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"
service_tier"default"
usage0.0002214
router(null)
provider_responses
0
endpoint_id"6bd8f433-79e1-416c-b407-1772eb796c9a"
id"pMRkatuALLr3jrEPgIfOwQk"
is_byokfalse
latency277
model_permaslug"google/gemini-3.5-flash-lite-20260721"
provider_name"Google AI Studio"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1784988836-BjBFGNNWbMkJPDtrWgDQ"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784988836-NidgSrFMbNtJhOKj42Wk"
upstream_id"pMRkatuALLr3jrEPgIfOwQk"
total_cost0.0002214
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
13.53% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
018
118
218
318