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Run: 2026-05-19-01KS0TWVKH14RAEZBYSS7HNMW0
Run Details
Model:
Gemini 3.5 Flash (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
10.0s
Cost:
$0.022584
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
Midnight rain beat against the library windows, washing away the secrets that Lord Harrington had kept for many long years. Now, his cold body slumped over the mahogany desk, a silver letter opener protruding deeply from his expensive velvet waistcoat. Inspector Black stepped slowly through the shattered glass doors, adjusting his wet trench coat while scanning the dark, bloody study. The distinct smell of bitter almonds lingered in the damp air, suggesting that the blade was not the only weapon. Standing in the shadows, the old butler trembled violently, clutching a gold pocket watch that had stopped at exactly twelve.
created_at
"2026-05-19T19:20:11.127Z"
5/19/2026, 7:20:11 PM
model
"google/gemini-3.5-flash-20260519"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1476
moderation_latency
(null)
generation_time
9859
tokens_prompt
46
tokens_completion
965
native_tokens_prompt
38
native_tokens_completion
2503
native_tokens_completion_images
0
native_tokens_reasoning
2390
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
0.022584
router
(null)
provider_responses
0
endpoint_id
"bd50061c-e1d8-469e-96b1-d322e77378f8"
id
"67cMatnGFuy4qtsPwszRyAU"
is_byok
false
latency
1476
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-1779218411-1Sm02AX8jfOpipcYNLsF"
session_id
(null)
api_type
"completions"
id
"gen-1779218411-J8Y4zFX6gTChuWJvvaUt"
upstream_id
"67cMatnGFuy4qtsPwszRyAU"
total_cost
0.022584
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