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Run: 2026-05-20-01KS2634N4VFN9MNBM2MV1EH43
Run Details
Model:
Gemini 3.5 Flash (Reasoning, Minimal)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
2.1s
Cost:
$0.002163
Provider:
Google AI Studio
Evaluation summary
Score
Evaluator
Details Link
64.59%
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 grandfather clock struck midnight, sending a chilling shiver through the silent hallways of the sprawling, ancient country manor. Outside, a torrential rain lashed against the tall glass windows, masking the sound of footsteps on the creaking floor. Inside the locked study, Sir Reginald sat motionless at his heavy mahogany desk, his eyes staring blankly at nothing. A dark stain of crimson blood slowly pooled across the typed pages of his newly revised, highly controversial testament. The silver letter opener, which usually rested neatly on his leather blotter, was now buried deeply in his chest. No signs of a violent struggle existed within the tidy room, suggesting he knew his killer very well indeed. A single, damp footprint stained the Persian rug near the open window, where the cold wind howled quite fiercely. Beside the lifeless hand of the baronet lay a crumpled paper containing a cryptic message written in smeared black ink. "The final debt is paid," the brief note declared in elegant, sloping calligraphy that hinted at a woman’s hand. Soon, a distant, piercing scream shattered the heavy silence, signaling that the grim discovery had finally been made tonight.
created_at
"2026-05-20T07:55:05.768Z"
5/20/2026, 7:55:05 AM
model
"google/gemini-3.5-flash-20260519"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
669
moderation_latency
(null)
generation_time
2048
tokens_prompt
46
tokens_completion
306
native_tokens_prompt
38
native_tokens_completion
234
native_tokens_completion_images
0
native_tokens_reasoning
0
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
0.002163
router
(null)
provider_responses
0
endpoint_id
"bd50061c-e1d8-469e-96b1-d322e77378f8"
id
"2WgNatOlN_6__uMPo5_K6A8"
is_byok
false
latency
669
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-1779263705-3oq4YlW9VOsHPrHMur8j"
session_id
(null)
api_type
"completions"
id
"gen-1779263705-2CdelQC4hGXHubZaUlK1"
upstream_id
"2WgNatOlN_6__uMPo5_K6A8"
total_cost
0.002163
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
64.59%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
19
1
19
2
19
3
19
4
19
5
19
6
19
7
20
8
19
9
19