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Run: 2026-05-19-01KS0TJPZY7FFJ2NS0HBE9V1MG
Run Details
Model:
Gemini 3.5 Flash (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
16.9s
Cost:
$0.040080
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
Messages
Meta
AI
Rain lashed against the tall, stained glass windows of Blackwood Manor as Detective Miller stared at the bloody Persian rug. Lord Harrington lay face down in a pool of dark crimson blood, his silver pocket watch ticking very slowly nearby. The grandfather clock in the dim corner had stopped at exactly ten minutes past midnight, right when the lightning struck. A delicate smell of bitter almonds lingered in the cold room, suggesting that the rich old man was indeed poisoned. Near his lifeless hand, a torn paper scrap revealed a highly secret message written in smeared, dark black fountain ink. Miller knelt carefully to inspect the writing, knowing that everyone in this grand house had a motive for the murder. Suddenly, a loud scream echoed from the dark hallway upstairs, and the heavy front door of the mansion slammed shut.
created_at
"2026-05-19T19:14:38.724Z"
5/19/2026, 7:14:38 PM
model
"google/gemini-3.5-flash-20260519"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1443
moderation_latency
(null)
generation_time
16798
tokens_prompt
46
tokens_completion
1483
native_tokens_prompt
38
native_tokens_completion
4447
native_tokens_completion_images
0
native_tokens_reasoning
4290
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"STOP"
service_tier
"standard"
usage
0.04008
router
(null)
provider_responses
0
endpoint_id
"bd50061c-e1d8-469e-96b1-d322e77378f8"
id
"nrYMavboNd-d_uMP_uqesAY"
is_byok
false
latency
1443
model_permaslug
"google/gemini-3.5-flash-20260519"
provider_name
"Google AI Studio"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.15.0; linux; x64))"
http_referer
(null)
request_id
"req-1779218078-8lWAlrpArhLIZLHTnmNl"
session_id
(null)
api_type
"completions"
id
"gen-1779218078-MZGara7pJnxgBa048uS5"
upstream_id
"nrYMavboNd-d_uMP_uqesAY"
total_cost
0.04008
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
sentences
7
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20
6
20