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Run: 2026-02-25-01KJ95XV4F7ZQ9H6T1F30PVWRK
Run Details
Model:
Gemini 2.5 Flash Lite (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
5.8s
Cost:
$0.000564
Provider:
Google AI Studio
Evaluation summary
Score
Evaluator
Details Link
35.02%
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 oppressive silence of the grand old library felt heavier than usual on this storm-laden evening, truly concealing dread. A lone figure, Mr. Abernathy, cautiously approached the ominous flickering glow within the forbidden east wing tonight. He pushed the heavy oak door open slowly, revealing a most ghastly scene that instantly froze his very soul. Lord Ashworth lay motionless upon the expensive Persian rug, his eyes wide with a terror none could comprehend. A shattered crystal decanter lay nearby, its spilled amber contents staining the intricate tapestry under pale, ethereal moonlight. No visible sign of forced entry marred the room, suggesting the killer was perhaps known to his unfortunate victim.
created_at
"2026-02-25T01:17:00.436Z"
2/25/2026, 1:17:00 AM
model
"google/gemini-2.5-flash-lite"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1074
moderation_latency
(null)
generation_time
5791
tokens_prompt
46
tokens_completion
1071
native_tokens_prompt
38
native_tokens_completion
1401
native_tokens_completion_images
0
native_tokens_reasoning
1275
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"STOP"
usage
0.0005642
router
(null)
provider_responses
0
endpoint_id
"ce839073-aa24-4f29-8358-15b319bd05ec"
is_byok
false
latency
1074
model_permaslug
"google/gemini-2.5-flash-lite"
provider_name
"Google AI Studio"
status
200
api_type
"completions"
id
"gen-1771982220-Q5h7Xb67agiI8o5ANoUr"
upstream_id
(null)
total_cost
0.0005642
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
35.02%
Matches word count
n/a
neededClean
false
sentences
6
wordCounts
0
19
1
17
2
19
3
18
4
18
5
19