Run: 2026-05-19-01KS0V72SR9JHD29S8AAE1YX8Y

Run Details

Duration:
17.2s
Cost:
$0.039612
Provider:
Google AI Studio

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
Rain lashed against the cold glass windows of old Blackwood Manor while the grandfather clock struck its heavy midnight chime. Lord Harrington sat in his favorite green leather armchair, but his eyes were wide open and completely devoid of life. A single, deep red stain bloomed across his immaculate white shirt, dripping slowly onto the expensive Persian silk rug below. The young maid dropped her silver serving tray, sending a dozen crystal wine glasses shattering across the dark wooden floor. Her terrified scream pierced the quiet night, echoing through the long hallways and bringing the wealthy dinner guests running inside. Now, they were all trapped in the isolated mansion with a ruthless killer hiding behind a mask of innocent surprise.
created_at"2026-05-19T19:25:46.173Z" 5/19/2026, 7:25:46 PM
model"google/gemini-3.5-flash-20260519"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1660
moderation_latency(null)
generation_time17064
tokens_prompt46
tokens_completion1494
native_tokens_prompt38
native_tokens_completion4395
native_tokens_completion_images0
native_tokens_reasoning4261
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"standard"
usage0.039612
router(null)
provider_responses
0
endpoint_id"bd50061c-e1d8-469e-96b1-d322e77378f8"
id"OrkMasLqE-yOjMcPlq_iOQ"
is_byokfalse
latency1660
model_permaslug"google/gemini-3.5-flash-20260519"
provider_name"Google AI Studio"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.15.0; linux; x64))"
http_referer(null)
request_id"req-1779218746-JQqUvPoZIGksvtbTPjUd"
session_id(null)
api_type"completions"
id"gen-1779218746-kIaKn9qFsPVvue1fKY7T"
upstream_id"OrkMasLqE-yOjMcPlq_iOQ"
total_cost0.039612
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520