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Run: 2026-05-20-01KS25RXD8W608Q0MCW8KDP4WQ
Run Details
Model:
Gemini 3.5 Flash (Reasoning, Minimal)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
1.9s
Cost:
$0.001794
Provider:
Google AI Studio
Evaluation summary
Score
Evaluator
Details Link
54.76%
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 leaded windows of Blackwood Manor, washing away any hope of a quiet, peaceful autumn evening. Inside, a grandfather clock chimed eight times, its heavy brass pendulum swinging rhythmically like a slow, deliberate beating heart. Lord Archibald sat stiffly in his favorite leather armchair, staring blankly ahead with eyes that could no longer see. A delicate porcelain teacup lay shattered on the Persian rug, surrounded by a dark, pooling liquid and white sugar. Standing in the doorway, the trembling butler clutched a silver serving tray closely against his chest, gasping for breath. He stared in sheer horror at his master's pale, rigid face, realizing immediately that the wealthy gentleman was dead. Suddenly, a cold draft swept through the dimly lit drawing room, causing the flickering candlelight to dance wildly. In the shadow of the velvet curtains, a gloved hand quietly closed the heavy oak door and locked it.
created_at
"2026-05-20T07:49:30.67Z"
5/20/2026, 7:49:30 AM
model
"google/gemini-3.5-flash-20260519"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
676
moderation_latency
(null)
generation_time
1808
tokens_prompt
46
tokens_completion
243
native_tokens_prompt
38
native_tokens_completion
193
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
0.001794
router
(null)
provider_responses
0
endpoint_id
"bd50061c-e1d8-469e-96b1-d322e77378f8"
id
"imcNapW0Mpy3_uMPvM_bGA"
is_byok
false
latency
676
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-1779263370-qJYQi5eMKazwWW8HUp8C"
session_id
(null)
api_type
"completions"
id
"gen-1779263370-ta5X9PPW93yHQB3NvMQh"
upstream_id
"imcNapW0Mpy3_uMPvM_bGA"
total_cost
0.001794
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
54.76%
Matches word count
n/a
neededClean
false
sentences
8
wordCounts
0
19
1
19
2
19
3
19
4
19
5
19
6
18
7
19