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Run: 2026-05-19-01KS0TV2CYYR8Y9T2NFD1QZTBY
Run Details
Model:
Gemini 3.5 Flash (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
11.8s
Cost:
$0.027372
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
The heavy rain poured on the stone manor, washing away the blood of the victim who lay on the floor. Detective Miller stared intently at the broken pocket watch, which had stopped precisely at midnight when the fatal blow landed. Lord Blackwood was dressed in his finest evening tuxedo, but a silver letter opener protruded deeply from his still chest. No obvious signs of forced entry were found, meaning the clever killer was likely someone currently sleeping under this roof. A muffled scream echoed from the dark hallway, signaling that this long, terrifying night of investigation had only just begun.
created_at
"2026-05-19T19:19:12.549Z"
5/19/2026, 7:19:12 PM
model
"google/gemini-3.5-flash-20260519"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1300
moderation_latency
(null)
generation_time
11696
tokens_prompt
46
tokens_completion
1347
native_tokens_prompt
38
native_tokens_completion
3035
native_tokens_completion_images
0
native_tokens_reasoning
2922
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
0.027372
router
(null)
provider_responses
0
endpoint_id
"bd50061c-e1d8-469e-96b1-d322e77378f8"
id
"sLcMaoi0KqmwjMcPi-3xkAo"
is_byok
false
latency
1299
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-1779218352-z1i6A1Rn3jwHpRIr9zJU"
session_id
(null)
api_type
"completions"
id
"gen-1779218352-YuohOF5o4oR58ZGEY460"
upstream_id
"sLcMaoi0KqmwjMcPi-3xkAo"
total_cost
0.027372
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
5
wordCounts
0
20
1
20
2
20
3
20
4
20