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Run: 2026-02-25-01KJ95PPC95MT491521R6AS1MW
Run Details
Model:
Gemini 2.5 Flash (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
7.9s
Cost:
$0.003971
Provider:
Google AI Studio
Evaluation summary
Score
Evaluator
Details Link
98.99%
Matches word count
(details)
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
The old house stood silent. Rain lashed against the windows. A cold wind howled outside. Mrs. Gable held her breath. Her flashlight cut the gloom. She checked the locked doors. A foul smell lingered weakly. It came from the study. Her heart pounded in fear. The heavy door stood ajar. She pushed it open slowly. A figure lay on floor. Dark liquid pooled beneath him. Sir Reginald Thorne lay dead. His eyes stared at ceiling. Unseeing, they held pure terror. Mrs. Gable gasped in shock. Her old hands began shaking. She dropped her trembling phone. It clattered loudly on floor. A distant siren would soon sound. Doom had arrived tonight clearly.
created_at
"2026-02-25T01:13:06.19Z"
2/25/2026, 1:13:06 AM
model
"google/gemini-2.5-flash"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1185
moderation_latency
(null)
generation_time
7840
tokens_prompt
46
tokens_completion
814
native_tokens_prompt
37
native_tokens_completion
1584
native_tokens_completion_images
0
native_tokens_reasoning
1448
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
0.0039711
router
(null)
provider_responses
0
endpoint_id
"16c01e26-9b91-4d22-b487-ed35634b017d"
is_byok
false
latency
1185
model_permaslug
"google/gemini-2.5-flash"
provider_name
"Google AI Studio"
status
200
api_type
"completions"
id
"gen-1771981986-xqaRpbaYNSNQgW5DceGQ"
upstream_id
(null)
total_cost
0.0039711
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
98.99%
Matches word count
n/a
neededClean
false
sentences
22
wordCounts
0
5
1
5
2
5
3
5
4
5
5
5
6
5
7
5
8
5
9
5
10
5
11
5
12
5
13
5
14
5
15
5
16
5
17
5
18
5
19
5
20
6
21
5